Merge commit '4a4f7e6550cf5b327ea0fb241ce7417ab46e1ace' into concedo_experimental

# Conflicts:
#	.github/ISSUE_TEMPLATE/011-bug-results.yml
#	CODEOWNERS
#	README.md
#	ci/run.sh
#	docs/development/HOWTO-add-model.md
#	grammars/README.md
#	src/llama-context.cpp
#	src/llama.cpp
#	tools/CMakeLists.txt
#	tools/completion/README.md
#	tools/llama-bench/README.md
This commit is contained in:
Concedo
2025-12-17 14:30:39 +08:00
27 changed files with 1152 additions and 64 deletions
+32 -1
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@@ -22,6 +22,7 @@
#include <nlohmann/json.hpp>
#include <algorithm>
#include <cinttypes>
#include <climits>
#include <cstdarg>
#include <fstream>
@@ -531,7 +532,9 @@ static bool common_params_parse_ex(int argc, char ** argv, common_params_context
params.kv_overrides.back().key[0] = 0;
}
if (!params.tensor_buft_overrides.empty()) {
// pad tensor_buft_overrides for llama_params_fit:
const size_t ntbo = llama_max_tensor_buft_overrides();
while (params.tensor_buft_overrides.size() < ntbo) {
params.tensor_buft_overrides.push_back({nullptr, nullptr});
}
@@ -2155,6 +2158,34 @@ common_params_context common_params_parser_init(common_params & params, llama_ex
}
}
).set_env("LLAMA_ARG_MAIN_GPU"));
add_opt(common_arg(
{ "-fit", "--fit" }, "[on|off]",
string_format("whether to adjust unset arguments to fit in device memory ('on' or 'off', default: '%s')", params.fit_params ? "on" : "off"),
[](common_params & params, const std::string & value) {
if (is_truthy(value)) {
params.fit_params = true;
} else if (is_falsey(value)) {
params.fit_params = false;
} else {
throw std::runtime_error(
string_format("error: unkown value for --fit: '%s'\n", value.c_str()));
}
}
).set_env("LLAMA_ARG_FIT"));
add_opt(common_arg(
{ "-fitt", "--fit-target" }, "MiB",
string_format("target margin per device for --fit option, default: %zu", params.fit_params_target/(1024*1024)),
[](common_params & params, int value) {
params.fit_params_target = value * size_t(1024*1024);
}
).set_env("LLAMA_ARG_FIT_TARGET"));
add_opt(common_arg(
{ "-fitc", "--fit-ctx" }, "N",
string_format("minimum ctx size that can be set by --fit option, default: %" PRIu32, params.fit_params_min_ctx),
[](common_params & params, int value) {
params.fit_params_min_ctx = value;
}
).set_env("LLAMA_ARG_FIT_CTX"));
add_opt(common_arg(
{"--check-tensors"},
string_format("check model tensor data for invalid values (default: %s)", params.check_tensors ? "true" : "false"),
+12 -9
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@@ -1096,7 +1096,15 @@ struct common_init_result::impl {
common_init_result::common_init_result(common_params & params) :
pimpl(new impl{}) {
const auto mparams = common_model_params_to_llama(params);
auto mparams = common_model_params_to_llama(params);
auto cparams = common_context_params_to_llama(params);
if (params.fit_params) {
LOG_INF("%s: fitting params to device memory, to report bugs during this step use -fit off (or --verbose if you can't)\n", __func__);
llama_params_fit(params.model.path.c_str(), &mparams, &cparams,
params.tensor_split, params.tensor_buft_overrides.data(), params.fit_params_target, params.fit_params_min_ctx,
params.verbosity >= 4 ? GGML_LOG_LEVEL_DEBUG : GGML_LOG_LEVEL_ERROR);
}
llama_model * model = llama_model_load_from_file(params.model.path.c_str(), mparams);
if (model == NULL) {
@@ -1111,8 +1119,6 @@ common_init_result::common_init_result(common_params & params) :
// TODO: fix naming
common_init_sampler_from_model(model, params.sampling);
auto cparams = common_context_params_to_llama(params);
if (params.sampling.ignore_eos && llama_vocab_eos(vocab) == LLAMA_TOKEN_NULL) {
LOG_WRN("%s: warning: vocab does not have an EOS token, ignoring --ignore-eos\n", __func__);
params.sampling.ignore_eos = false;
@@ -1151,8 +1157,7 @@ common_init_result::common_init_result(common_params & params) :
llama_context * lctx = llama_init_from_model(model, cparams);
if (lctx == NULL) {
LOG_ERR("%s: failed to create context with model '%s', try reducing --n-gpu-layers if you're running out of VRAM\n",
__func__, params.model.path.c_str());
LOG_ERR("%s: failed to create context with model '%s'\n", __func__, params.model.path.c_str());
return;
}
@@ -1184,15 +1189,13 @@ common_init_result_ptr common_init_from_params(common_params & params) {
llama_model * model = res->model();
if (model == NULL) {
LOG_ERR("%s: failed to load model '%s', try reducing --n-gpu-layers if you're running out of VRAM\n",
__func__, params.model.path.c_str());
LOG_ERR("%s: failed to load model '%s'\n", __func__, params.model.path.c_str());
return res;
}
llama_context * lctx = res->context();
if (lctx == NULL) {
LOG_ERR("%s: failed to create context with model '%s', try reducing --n-gpu-layers if you're running out of VRAM\n",
__func__, params.model.path.c_str());
LOG_ERR("%s: failed to create context with model '%s'\n", __func__, params.model.path.c_str());
return res;
}
+9 -5
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@@ -95,6 +95,7 @@ enum llama_example {
LLAMA_EXAMPLE_TTS,
LLAMA_EXAMPLE_DIFFUSION,
LLAMA_EXAMPLE_FINETUNE,
LLAMA_EXAMPLE_FIT_PARAMS,
LLAMA_EXAMPLE_COUNT,
};
@@ -302,8 +303,8 @@ struct lr_opt {
struct ggml_opt_optimizer_params common_opt_lr_pars(void * userdata);
struct common_params {
int32_t n_predict = -1; // new tokens to predict
int32_t n_ctx = 4096; // context size
int32_t n_predict = -1; // max. number of new tokens to predict, -1 == no limit
int32_t n_ctx = 0; // context size, 0 == context the model was trained with
int32_t n_batch = 2048; // logical batch size for prompt processing (must be >=32 to use BLAS)
int32_t n_ubatch = 512; // physical batch size for prompt processing (must be >=32 to use BLAS)
int32_t n_keep = 0; // number of tokens to keep from initial prompt
@@ -324,9 +325,12 @@ struct common_params {
// offload params
std::vector<ggml_backend_dev_t> devices; // devices to use for offloading
int32_t n_gpu_layers = -1; // number of layers to store in VRAM (-1 - use default)
int32_t main_gpu = 0; // the GPU that is used for scratch and small tensors
float tensor_split[128] = {0}; // how split tensors should be distributed across GPUs
int32_t n_gpu_layers = -1; // number of layers to store in VRAM (-1 - use default)
int32_t main_gpu = 0; // the GPU that is used for scratch and small tensors
float tensor_split[128] = {0}; // how split tensors should be distributed across GPUs
bool fit_params = true; // whether to fit unset model/context parameters to free device memory
size_t fit_params_target = 1024 * 1024*1024; // margin per device in bytes for fitting parameters to free memory
int32_t fit_params_min_ctx = 4096; // minimum context size to set when trying to reduce memory use
enum llama_split_mode split_mode = LLAMA_SPLIT_MODE_LAYER; // how to split the model across GPUs
+9
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@@ -53,7 +53,14 @@ GGML_API void ggml_gallocr_free(ggml_gallocr_t galloc);
// call with a worst-case graph to avoid buffer reallocations
// not strictly required for single buffer usage: ggml_gallocr_alloc_graph will reallocate the buffers automatically if needed
// returns false if the buffer allocation failed
// ggml_gallocr_resrve_n_size writes the buffer sizes per galloc buffer that would be allocated by ggml_gallocr_reserve_n to sizes
GGML_API bool ggml_gallocr_reserve(ggml_gallocr_t galloc, struct ggml_cgraph * graph);
GGML_API void ggml_gallocr_reserve_n_size(
ggml_gallocr_t galloc,
struct ggml_cgraph * graph,
const int * node_buffer_ids,
const int * leaf_buffer_ids,
size_t * sizes);
GGML_API bool ggml_gallocr_reserve_n(
ggml_gallocr_t galloc,
struct ggml_cgraph * graph,
@@ -68,6 +75,8 @@ GGML_API size_t ggml_gallocr_get_buffer_size(ggml_gallocr_t galloc, int buffer_i
// Utils
// Create a buffer and allocate all the tensors in a ggml_context
// ggml_backend_alloc_ctx_tensors_from_buft_size returns the size of the buffer that would be allocated by ggml_backend_alloc_ctx_tensors_from_buft
GGML_API size_t ggml_backend_alloc_ctx_tensors_from_buft_size(struct ggml_context * ctx, ggml_backend_buffer_type_t buft);
GGML_API struct ggml_backend_buffer * ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_context * ctx, ggml_backend_buffer_type_t buft);
GGML_API struct ggml_backend_buffer * ggml_backend_alloc_ctx_tensors(struct ggml_context * ctx, ggml_backend_t backend);
+1
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@@ -307,6 +307,7 @@ extern "C" {
GGML_API void ggml_backend_sched_free(ggml_backend_sched_t sched);
// Initialize backend buffers from a measure graph
GGML_API void ggml_backend_sched_reserve_size(ggml_backend_sched_t sched, struct ggml_cgraph * measure_graph, size_t * sizes);
GGML_API bool ggml_backend_sched_reserve(ggml_backend_sched_t sched, struct ggml_cgraph * measure_graph); // returns success
GGML_API int ggml_backend_sched_get_n_backends(ggml_backend_sched_t sched);
+2 -1
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@@ -2640,7 +2640,8 @@ extern "C" {
// Set callback for all future logging events.
// If this is not called, or NULL is supplied, everything is output on stderr.
GGML_API void ggml_log_set(ggml_log_callback log_callback, void * user_data);
GGML_API void ggml_log_get(ggml_log_callback * log_callback, void ** user_data);
GGML_API void ggml_log_set(ggml_log_callback log_callback, void * user_data);
GGML_API struct ggml_tensor * ggml_set_zero(struct ggml_tensor * tensor);
+56 -12
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@@ -594,7 +594,9 @@ static bool ggml_gallocr_is_own(ggml_gallocr_t galloc, struct ggml_tensor * t) {
}
static bool ggml_gallocr_is_allocated(ggml_gallocr_t galloc, struct ggml_tensor * t) {
return t->data != NULL || ggml_gallocr_hash_get(galloc, t)->allocated;
return t->data != NULL // tensor data already set externally
|| t->buffer // tensor on external buffer (but not yet allocated)
|| ggml_gallocr_is_own(galloc, t); // tensor will be allocated by galloc
}
// free the extra space at the end if the new tensor is smaller
@@ -823,7 +825,8 @@ static void ggml_gallocr_alloc_graph_impl(ggml_gallocr_t galloc, struct ggml_cgr
}
}
bool ggml_gallocr_reserve_n(ggml_gallocr_t galloc, struct ggml_cgraph * graph, const int * node_buffer_ids, const int * leaf_buffer_ids) {
static bool ggml_gallocr_reserve_n_impl(
ggml_gallocr_t galloc, struct ggml_cgraph * graph, const int * node_buffer_ids, const int * leaf_buffer_ids, bool no_alloc) {
size_t min_hash_size = graph->n_nodes + graph->n_leafs;
// add 25% margin to avoid hash collisions
min_hash_size += min_hash_size / 4;
@@ -928,16 +931,19 @@ bool ggml_gallocr_reserve_n(ggml_gallocr_t galloc, struct ggml_cgraph * graph, c
size_t cur_size = galloc->buffers[i] ? ggml_vbuffer_size(galloc->buffers[i]) : 0;
if (cur_size > 0) {
GGML_LOG_DEBUG("%s: reallocating %s buffer from size %.02f MiB to %.02f MiB\n",
__func__, ggml_backend_buft_name(galloc->bufts[i]),
cur_size / 1024.0 / 1024.0, new_size / 1024.0 / 1024.0);
__func__, ggml_backend_buft_name(galloc->bufts[i]), cur_size / 1024.0 / 1024.0, new_size / 1024.0 / 1024.0);
}
}
#endif
ggml_vbuffer_free(galloc->buffers[i]);
galloc->buffers[i] = ggml_vbuffer_alloc(galloc->bufts[i], galloc->buf_tallocs[i], GGML_BACKEND_BUFFER_USAGE_COMPUTE);
if (galloc->buffers[i] == NULL) {
GGML_LOG_ERROR("%s: failed to allocate %s buffer of size %zu\n", __func__, ggml_backend_buft_name(galloc->bufts[i]), new_size);
return false;
if (no_alloc) {
galloc->buffers[i] = NULL;
} else {
galloc->buffers[i] = ggml_vbuffer_alloc(galloc->bufts[i], galloc->buf_tallocs[i], GGML_BACKEND_BUFFER_USAGE_COMPUTE);
if (galloc->buffers[i] == NULL) {
GGML_LOG_ERROR("%s: failed to allocate %s buffer of size %zu\n", __func__, ggml_backend_buft_name(galloc->bufts[i]), new_size);
return false;
}
}
}
}
@@ -945,6 +951,21 @@ bool ggml_gallocr_reserve_n(ggml_gallocr_t galloc, struct ggml_cgraph * graph, c
return true;
}
void ggml_gallocr_reserve_n_size(
ggml_gallocr_t galloc, struct ggml_cgraph * graph, const int * node_buffer_ids, const int * leaf_buffer_ids, size_t * sizes) {
GGML_ASSERT(ggml_gallocr_reserve_n_impl(galloc, graph, node_buffer_ids, leaf_buffer_ids, /*no_alloc =*/ true));
for (int i = 0; i < galloc->n_buffers; i++) {
sizes[i] = 0;
for (int c = 0; c < galloc->buf_tallocs[i]->n_chunks; c++) {
sizes[i] += galloc->buf_tallocs[i]->chunks[c]->max_size;
}
}
}
bool ggml_gallocr_reserve_n(ggml_gallocr_t galloc, struct ggml_cgraph * graph, const int * node_buffer_ids, const int * leaf_buffer_ids) {
return ggml_gallocr_reserve_n_impl(galloc, graph, node_buffer_ids, leaf_buffer_ids, /*no_alloc =*/ false);
}
bool ggml_gallocr_reserve(ggml_gallocr_t galloc, struct ggml_cgraph *graph) {
return ggml_gallocr_reserve_n(galloc, graph, NULL, NULL);
}
@@ -1147,7 +1168,8 @@ static bool alloc_tensor_range(struct ggml_context * ctx,
return true;
}
ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_context * ctx, ggml_backend_buffer_type_t buft) {
static ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft_impl(
struct ggml_context * ctx, ggml_backend_buffer_type_t buft, size_t * nbytes_total, bool no_alloc) {
GGML_ASSERT(ggml_get_no_alloc(ctx) == true);
size_t alignment = ggml_backend_buft_get_alignment(buft);
@@ -1155,6 +1177,7 @@ ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_conte
ggml_backend_buffer_t * buffers = NULL;
size_t n_buffers = 0;
*nbytes_total = 0;
size_t cur_buf_size = 0;
struct ggml_tensor * first = ggml_get_first_tensor(ctx);
@@ -1166,10 +1189,11 @@ ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_conte
if (cur_buf_size > 0 && (cur_buf_size + this_size) > max_size) {
// allocate tensors in the current buffer
if (!alloc_tensor_range(ctx, first, t, buft, cur_buf_size, &buffers, &n_buffers)) {
if (!no_alloc && !alloc_tensor_range(ctx, first, t, buft, cur_buf_size, &buffers, &n_buffers)) {
return NULL;
}
first = t;
*nbytes_total += cur_buf_size;
cur_buf_size = this_size;
} else {
cur_buf_size += this_size;
@@ -1178,15 +1202,21 @@ ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_conte
// allocate remaining tensors
if (cur_buf_size > 0) {
if (!alloc_tensor_range(ctx, first, NULL, buft, cur_buf_size, &buffers, &n_buffers)) {
*nbytes_total += cur_buf_size;
if (!no_alloc && !alloc_tensor_range(ctx, first, NULL, buft, cur_buf_size, &buffers, &n_buffers)) {
return NULL;
}
}
if (no_alloc) {
return NULL;
}
if (n_buffers == 0) {
#ifndef NDEBUG
GGML_LOG_DEBUG("%s: all tensors in the context are already allocated\n", __func__);
#endif
GGML_ASSERT(!buffers);
return NULL;
}
@@ -1196,10 +1226,24 @@ ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_conte
} else {
buffer = ggml_backend_multi_buffer_alloc_buffer(buffers, n_buffers);
}
free(buffers);
if (buffers) {
free(buffers); // can be NULL if context is empty or no_alloc
}
return buffer;
}
size_t ggml_backend_alloc_ctx_tensors_from_buft_size(struct ggml_context * ctx, ggml_backend_buffer_type_t buft) {
size_t nbytes_total = 0;
ggml_backend_buffer_t buf = ggml_backend_alloc_ctx_tensors_from_buft_impl(ctx, buft, &nbytes_total, /*no_alloc=*/ true);
GGML_ASSERT(!buf);
return nbytes_total;
}
ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_context * ctx, ggml_backend_buffer_type_t buft) {
size_t nbytes_total = 0;
return ggml_backend_alloc_ctx_tensors_from_buft_impl(ctx, buft, &nbytes_total, /*no_alloc =*/ false);
}
ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors(struct ggml_context * ctx, ggml_backend_t backend) {
return ggml_backend_alloc_ctx_tensors_from_buft(ctx, ggml_backend_get_default_buffer_type(backend));
}
+21 -2
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@@ -36,12 +36,11 @@ const char * ggml_backend_buft_name(ggml_backend_buffer_type_t buft) {
}
ggml_backend_buffer_t ggml_backend_buft_alloc_buffer(ggml_backend_buffer_type_t buft, size_t size) {
GGML_ASSERT(buft);
if (size == 0) {
// return a dummy buffer for zero-sized allocations
return ggml_backend_buffer_init(buft, {}, NULL, 0);
}
GGML_ASSERT(buft);
return buft->iface.alloc_buffer(buft, size);
}
@@ -128,6 +127,12 @@ void * ggml_backend_buffer_get_base(ggml_backend_buffer_t buffer) {
return NULL;
}
// FIXME JG: a multi_buffer has a non-zero size, according to the above comment get_base is not optional,
// I don't know whether the above comment is correct
if (!buffer->iface.get_base) {
return NULL;
}
void * base = buffer->iface.get_base(buffer);
GGML_ASSERT(base != NULL && "backend buffer base cannot be NULL");
@@ -1734,6 +1739,20 @@ void ggml_backend_sched_reset(ggml_backend_sched_t sched) {
sched->is_alloc = false;
}
void ggml_backend_sched_reserve_size(ggml_backend_sched_t sched, struct ggml_cgraph * measure_graph, size_t * sizes) {
GGML_ASSERT(sched);
GGML_ASSERT((int)sched->hash_set.size >= measure_graph->n_nodes + measure_graph->n_leafs);
GGML_ASSERT(sizes);
ggml_backend_sched_reset(sched);
ggml_backend_sched_synchronize(sched);
ggml_backend_sched_split_graph(sched, measure_graph);
ggml_gallocr_reserve_n_size(sched->galloc, &sched->graph, sched->node_backend_ids, sched->leaf_backend_ids, sizes);
}
bool ggml_backend_sched_reserve(ggml_backend_sched_t sched, struct ggml_cgraph * measure_graph) {
GGML_ASSERT(sched);
GGML_ASSERT((int)sched->hash_set.size >= measure_graph->n_nodes + measure_graph->n_leafs);
+5
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@@ -7582,6 +7582,11 @@ size_t ggml_quantize_chunk(
////////////////////////////////////////////////////////////////////////////////
void ggml_log_get(ggml_log_callback * log_callback, void ** user_data) {
*log_callback = g_logger_state.log_callback;
*user_data = g_logger_state.log_callback_user_data;
}
void ggml_log_set(ggml_log_callback log_callback, void * user_data) {
g_logger_state.log_callback = log_callback ? log_callback : ggml_log_callback_default;
g_logger_state.log_callback_user_data = user_data;
+18 -1
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@@ -316,6 +316,7 @@ extern "C" {
bool check_tensors; // validate model tensor data
bool use_extra_bufts; // use extra buffer types (used for weight repacking)
bool no_host; // bypass host buffer allowing extra buffers to be used
bool no_alloc; // only load metadata and simulate memory allocations
};
// NOTE: changing the default values of parameters marked as [EXPERIMENTAL] may cause crashes or incorrect results in certain configurations
@@ -469,10 +470,24 @@ extern "C" {
// Frees all allocated memory
LLAMA_API void llama_free(struct llama_context * ctx);
// fits mparams and cparams to free device memory (assumes system memory is unlimited)
// returns true if the parameters could be successfully modified to fit device memory
// this function is NOT thread safe because it modifies the global llama logger state
LLAMA_API bool llama_params_fit(
const char * path_model,
struct llama_model_params * mparams,
struct llama_context_params * cparams,
float * tensor_split, // writable buffer for tensor split, needs at least llama_max_devices elements
struct llama_model_tensor_buft_override * tensor_buft_overrides, // writable buffer for overrides, needs at least llama_max_tensor_buft_overrides elements
size_t margin, // margin of memory to leave per device in bytes
uint32_t n_ctx_min, // minimum context size to set when trying to reduce memory use
enum ggml_log_level log_level); // minimum log level to print during fitting, lower levels go to debug log
LLAMA_API int64_t llama_time_us(void);
LLAMA_API size_t llama_max_devices(void);
LLAMA_API size_t llama_max_parallel_sequences(void);
LLAMA_API size_t llama_max_tensor_buft_overrides(void);
LLAMA_API bool llama_supports_mmap (void);
LLAMA_API bool llama_supports_mlock (void);
@@ -1357,7 +1372,9 @@ extern "C" {
// Set callback for all future logging events.
// If this is not called, or NULL is supplied, everything is output on stderr.
LLAMA_API void llama_log_set(ggml_log_callback log_callback, void * user_data);
// The logger state is global so these functions are NOT thread safe.
LLAMA_API void llama_log_get(ggml_log_callback * log_callback, void ** user_data);
LLAMA_API void llama_log_set(ggml_log_callback log_callback, void * user_data);
//
// Performance utils
+54 -15
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@@ -261,6 +261,7 @@ llama_context::llama_context(
backend_buft.clear();
backend_ptrs.clear();
backend_buf_exp_size.clear();
for (auto & backend : backends) {
auto * buft = ggml_backend_get_default_buffer_type(backend.get());
@@ -277,6 +278,7 @@ llama_context::llama_context(
backend_buft.push_back(buft);
backend_ptrs.push_back(backend.get());
backend_buf_exp_size.push_back(0);
}
LLAMA_LOG_DEBUG("%s: backend_ptrs.size() = %zu\n", __func__, backend_ptrs.size());
@@ -398,7 +400,8 @@ llama_context::llama_context(
// reserve pp (prompt processing) graph first so that buffers are only allocated once
{
auto * gf = graph_reserve(n_tokens, n_seqs, n_tokens, mctx.get());
auto * gf = graph_reserve(n_tokens, n_seqs, n_tokens, mctx.get(),
model.hparams.no_alloc, model.hparams.no_alloc ? backend_buf_exp_size.data() : nullptr);
if (!gf) {
if (pipeline_parallel) {
LLAMA_LOG_WARN("%s: compute buffer allocation failed, retrying without pipeline parallelism\n", __func__);
@@ -416,7 +419,7 @@ llama_context::llama_context(
// reserve with tg (token generation) graph to get the number of splits and nodes
{
auto * gf = graph_reserve(n_seqs, n_seqs, n_seqs, mctx.get());
auto * gf = graph_reserve(n_seqs, n_seqs, n_seqs, mctx.get(), model.hparams.no_alloc);
if (!gf) {
throw std::runtime_error("failed to allocate compute tg buffers");
}
@@ -431,7 +434,7 @@ llama_context::llama_context(
//
// auto * gf = graph_reserve(n_tokens, 1, n_tokens, mctx.get());
//
auto * gf = graph_reserve(n_tokens, n_seqs, n_tokens, mctx.get());
auto * gf = graph_reserve(n_tokens, n_seqs, n_tokens, mctx.get(), model.hparams.no_alloc);
if (!gf) {
throw std::runtime_error("failed to allocate compute pp buffers");
}
@@ -440,11 +443,13 @@ llama_context::llama_context(
for (size_t i = 0; i < backend_ptrs.size(); ++i) {
ggml_backend_t backend = backend_ptrs[i];
ggml_backend_buffer_type_t buft = backend_buft[i];
size_t size = ggml_backend_sched_get_buffer_size(sched.get(), backend);
if (size > 1) {
if (!model.hparams.no_alloc) {
backend_buf_exp_size[i] = ggml_backend_sched_get_buffer_size(sched.get(), backend);
}
if (backend_buf_exp_size[i] > 1) {
LLAMA_LOG_INFO("%s: %10s compute buffer size = %8.2f MiB\n", __func__,
ggml_backend_buft_name(buft),
size / 1024.0 / 1024.0);
backend_buf_exp_size[i] / 1024.0 / 1024.0);
}
}
@@ -464,6 +469,23 @@ llama_context::llama_context(
}
llama_context::~llama_context() {
// FIXME this currently results in a use-after-free bug if the model is freed before the context
// if (!model.hparams.no_alloc) {
// for (size_t i = 0; i < backend_ptrs.size(); ++i) {
// ggml_backend_t backend = backend_ptrs[i];
// ggml_backend_buffer_type_t buft = backend_buft[i];
// const size_t size_exp = backend_buf_exp_size[i];
// const size_t size_act = ggml_backend_sched_get_buffer_size(sched.get(), backend);
// if (size_exp == size_act) {
// LLAMA_LOG_DEBUG("%s: %10s compute buffer size is %8.4f MiB, matches expectation of %8.4f MiB\n",
// __func__, ggml_backend_buft_name(buft), size_act / (1024.0*1024.0), size_exp / (1024.0*1024.0));
// } else {
// LLAMA_LOG_WARN("%s: %10s compute buffer size of %8.4f MiB, does not match expectation of %8.4f MiB\n",
// __func__, ggml_backend_buft_name(buft), size_act / (1024.0*1024.0), size_exp / (1024.0*1024.0));
// }
// }
// }
ggml_opt_free(opt_ctx);
}
@@ -1438,7 +1460,8 @@ llm_graph_result * llama_context::get_gf_res_reserve() const {
return static_cast<llm_graph_result *>(gf_res_reserve.get());
}
ggml_cgraph * llama_context::graph_reserve(uint32_t n_tokens, uint32_t n_seqs, uint32_t n_outputs, const llama_memory_context_i * mctx, bool split_only) {
ggml_cgraph * llama_context::graph_reserve(
uint32_t n_tokens, uint32_t n_seqs, uint32_t n_outputs, const llama_memory_context_i * mctx, bool split_only, size_t * sizes) {
//LLAMA_LOG_DEBUG("%s: reserving a graph for ubatch with n_tokens = %4u, n_seqs = %2u, n_outputs = %4u\n", __func__, n_tokens, n_seqs, n_outputs);
GGML_ASSERT_CONTINUE(n_outputs >= 1);
@@ -1475,8 +1498,13 @@ ggml_cgraph * llama_context::graph_reserve(uint32_t n_tokens, uint32_t n_seqs, u
// initialize scheduler with the specified graph
if (split_only) {
ggml_backend_sched_split_graph(sched.get(), gf);
if (sizes) {
ggml_backend_sched_reserve_size(sched.get(), gf, sizes);
} else {
ggml_backend_sched_split_graph(sched.get(), gf);
}
} else if (!ggml_backend_sched_reserve(sched.get(), gf)) {
GGML_ASSERT(!sizes);
LLAMA_LOG_ERROR("%s: failed to allocate compute buffers\n", __func__);
return nullptr;
}
@@ -2098,15 +2126,26 @@ void llama_context::perf_reset() {
std::map<ggml_backend_buffer_type_t, llama_memory_breakdown_data> llama_context::memory_breakdown() const {
std::map<ggml_backend_buffer_type_t, llama_memory_breakdown_data> ret;
for (const auto & buft_size : model.memory_breakdown()) {
ret[buft_size.first].model += buft_size.second;
for (const auto & [buft, size] : model.memory_breakdown()) {
ret[buft].model += size;
}
for (const auto & buft_size : memory->memory_breakdown()) {
ret[buft_size.first].context += buft_size.second;
if (memory) {
for (const auto & [buft, size] : memory->memory_breakdown()) {
ret[buft].context += size;
}
}
for (const auto & backend_ptr : backends) {
ggml_backend_t backend = backend_ptr.get();
ret[ggml_backend_sched_get_buffer_type(sched.get(), backend)].compute += ggml_backend_sched_get_buffer_size(sched.get(), backend);
if (model.hparams.no_alloc) {
for (size_t i = 0; i < backends.size(); ++i) {
ggml_backend_t backend = backends[i].get();
ggml_backend_buffer_type_t buft = ggml_backend_sched_get_buffer_type(sched.get(), backend);
ret[buft].compute += backend_buf_exp_size[i];
}
} else {
for (const auto & backend_ptr : backends) {
ggml_backend_t backend = backend_ptr.get();
ggml_backend_buffer_type_t buft = ggml_backend_sched_get_buffer_type(sched.get(), backend);
ret[buft].compute += ggml_backend_sched_get_buffer_size(sched.get(), backend);
}
}
return ret;
}
+8 -2
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@@ -26,6 +26,10 @@ struct llama_memory_breakdown_data {
size_t model = 0; // memory allocated for the model
size_t context = 0; // memory allocated for the context
size_t compute = 0; // memory allocated for temporary compute buffers
size_t total() const {
return model + context + compute;
}
};
struct llama_context {
@@ -206,7 +210,8 @@ public:
ggml_status graph_compute(ggml_cgraph * gf, bool batched);
// reserve a graph with a dummy ubatch of the specified size
ggml_cgraph * graph_reserve(uint32_t n_tokens, uint32_t n_seqs, uint32_t n_outputs, const llama_memory_context_i * mctx, bool split_only = false);
ggml_cgraph * graph_reserve(
uint32_t n_tokens, uint32_t n_seqs, uint32_t n_outputs, const llama_memory_context_i * mctx, bool split_only = false, size_t * sizes = nullptr);
private:
llm_graph_params graph_params(
@@ -281,9 +286,10 @@ private:
std::vector<std::pair<ggml_backend_t, ggml_backend_set_n_threads_t>> set_n_threads_fns;
// buffer types used for the compute buffer of each backend
// pointers and buffer types used for the compute buffer of each backend
std::vector<ggml_backend_t> backend_ptrs;
std::vector<ggml_backend_buffer_type_t> backend_buft;
std::vector<size_t> backend_buf_exp_size; // expected buffer sizes
llm_graph_result_ptr gf_res_prev;
llm_graph_result_ptr gf_res_reserve;
+1
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@@ -34,6 +34,7 @@ struct llama_hparams_convnext {
struct llama_hparams {
bool vocab_only;
bool no_alloc;
bool rope_finetuned;
bool use_par_res;
bool swin_norm;
+4
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@@ -25,6 +25,10 @@ time_meas::~time_meas() {
}
}
void llama_log_get(ggml_log_callback * log_callback, void ** user_data) {
ggml_log_get(log_callback, user_data);
}
void llama_log_set(ggml_log_callback log_callback, void * user_data) {
ggml_log_set(log_callback, user_data);
g_logger_state.log_callback = log_callback ? log_callback : llama_log_callback_default;
+20 -3
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@@ -175,7 +175,15 @@ llama_kv_cache::llama_kv_cache(
// allocate tensors and initialize the buffers to avoid NaNs in the padding
for (auto & [buft, ctx] : ctx_map) {
ggml_backend_buffer_t buf = ggml_backend_alloc_ctx_tensors_from_buft(ctx.get(), buft);
ggml_backend_buffer_t buf;
if (model.hparams.no_alloc) {
buf = ggml_backend_buft_alloc_buffer(buft, /*size =*/ 0); // dummy buffer
for (ggml_tensor * t = ggml_get_first_tensor(ctx.get()); t != nullptr; t = ggml_get_next_tensor(ctx.get(), t)) {
t->buffer = buf; // set dummy buffer for KV cache so that the backend scheduler won't try to allocate it
}
} else {
buf = ggml_backend_alloc_ctx_tensors_from_buft(ctx.get(), buft); // real buffer
}
if (!buf) {
throw std::runtime_error("failed to allocate buffer for kv cache");
}
@@ -482,9 +490,18 @@ llama_pos llama_kv_cache::seq_pos_max(llama_seq_id seq_id) const {
std::map<ggml_backend_buffer_type_t, size_t> llama_kv_cache::memory_breakdown() const {
std::map<ggml_backend_buffer_type_t, size_t> ret;
for (const auto & [_, buf] : ctxs_bufs) {
ret[ggml_backend_buffer_get_type(buf.get())] += ggml_backend_buffer_get_size(buf.get());
for (const auto & [ctx, buf] : ctxs_bufs) {
ggml_backend_buffer_type_t buft = ggml_backend_buffer_get_type(buf.get());
if (hparams.no_alloc) {
GGML_ASSERT(ggml_backend_buffer_get_base(buf.get()) == nullptr);
ret[buft] += ggml_backend_alloc_ctx_tensors_from_buft_size(ctx.get(), buft);
} else {
// GGML_ASSERT(ggml_backend_buffer_get_base(buf.get()) != nullptr); // multi_buffer does not have a defined base
ret[buft] += ggml_backend_buffer_get_size(buf.get());
}
}
return ret;
}
+2
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@@ -477,6 +477,7 @@ llama_model_loader::llama_model_loader(
std::vector<std::string> & splits,
bool use_mmap,
bool check_tensors,
bool no_alloc,
const llama_model_kv_override * param_overrides_p,
const llama_model_tensor_buft_override * param_tensor_buft_overrides_p) {
int trace = 0;
@@ -721,6 +722,7 @@ llama_model_loader::llama_model_loader(
this->use_mmap = use_mmap;
this->check_tensors = check_tensors;
this->no_alloc = no_alloc;
}
std::string llama_model_loader::get_arch_name() const {
+2
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@@ -71,6 +71,7 @@ struct llama_model_loader {
bool use_mmap = false;
bool check_tensors;
bool no_alloc;
llama_files files;
llama_ftype ftype;
@@ -97,6 +98,7 @@ struct llama_model_loader {
std::vector<std::string> & splits, // optional, only need if the split does not follow naming scheme
bool use_mmap,
bool check_tensors,
bool no_alloc,
const llama_model_kv_override * param_overrides_p,
const llama_model_tensor_buft_override * param_tensor_buft_overrides_p);
+31 -7
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@@ -6765,9 +6765,11 @@ bool llama_model::load_tensors(llama_model_loader & ml) {
std::vector<ggml_backend_buffer_ptr> bufs;
if (ml.use_mmap && use_mmap_buffer && buffer_from_host_ptr_supported && is_default_buft) {
GGML_ASSERT(!ml.no_alloc);
for (uint32_t idx = 0; idx < ml.files.size(); idx++) {
// only the mmap region containing the tensors in the model is mapped to the backend buffer
// this is important for metal with apple silicon: if the entire model could be mapped to a metal buffer, then we could just use metal for all layers
// this is important for metal with apple silicon: if the entire model could be mapped to a metal buffer,
// then we could just use metal for all layers
// this allows using partial offloading when the model size exceeds the metal buffer size, but not the RAM size
void * addr = nullptr;
size_t first, last; // NOLINT
@@ -6783,9 +6785,16 @@ bool llama_model::load_tensors(llama_model_loader & ml) {
bufs.emplace_back(buf);
buf_map.emplace(idx, buf);
}
}
else {
ggml_backend_buffer_t buf = ggml_backend_alloc_ctx_tensors_from_buft(ctx, buft);
} else {
ggml_backend_buffer_t buf;
if (ml.no_alloc) {
buf = ggml_backend_buft_alloc_buffer(buft, /*size =*/ 0); // dummy buffer
for (ggml_tensor * t = ggml_get_first_tensor(ctx); t != nullptr; t = ggml_get_next_tensor(ctx, t)) {
t->buffer = buf; // set dummy buffer for weights so that the backend scheduler won't try to allocate them
}
} else {
buf = ggml_backend_alloc_ctx_tensors_from_buft(ctx, buft); // real buffer
}
if (buf == nullptr) {
throw std::runtime_error(format("unable to allocate %s buffer", ggml_backend_buft_name(buft)));
}
@@ -6840,6 +6849,10 @@ bool llama_model::load_tensors(llama_model_loader & ml) {
}
}
if (ml.no_alloc) {
return true;
}
// load tensor data
for (auto & [ctx, buf_map] : ctx_buf_maps) {
if (!ml.load_all_data(ctx, buf_map, use_mlock ? &pimpl->mlock_mmaps : NULL, params.progress_callback, params.progress_callback_user_data)) {
@@ -6882,9 +6895,18 @@ size_t llama_model::n_devices() const {
std::map<ggml_backend_buffer_type_t, size_t> llama_model::memory_breakdown() const {
std::map<ggml_backend_buffer_type_t, size_t> ret;
for (const auto & [_, bufs] : pimpl->ctxs_bufs) {
for (const auto & buf : bufs) {
ret[ggml_backend_buffer_get_type(buf.get())] += ggml_backend_buffer_get_size(buf.get());
for (const auto & [ctx, bufs] : pimpl->ctxs_bufs) {
if (hparams.no_alloc) {
GGML_ASSERT(bufs.size() == 1);
ggml_backend_buffer_t buf = bufs[0].get();
GGML_ASSERT(ggml_backend_buffer_get_base(buf) == nullptr);
ggml_backend_buffer_type_t buft = ggml_backend_buffer_get_type(buf);
ret[buft] += ggml_backend_alloc_ctx_tensors_from_buft_size(ctx.get(), buft);
} else {
for (const auto & buf : bufs) {
// GGML_ASSERT(ggml_backend_buffer_get_base(buf.get()) != nullptr); // multi_buffer does not have a defined base
ret[ggml_backend_buffer_get_type(buf.get())] += ggml_backend_buffer_get_size(buf.get());
}
}
}
return ret;
@@ -6929,6 +6951,7 @@ void llama_model::print_info() const {
// hparams
LLAMA_LOG_INFO("%s: arch = %s\n", __func__, arch_name().c_str());
LLAMA_LOG_INFO("%s: vocab_only = %d\n", __func__, hparams.vocab_only);
LLAMA_LOG_INFO("%s: no_alloc = %d\n", __func__, hparams.no_alloc);
if (!hparams.vocab_only) {
LLAMA_LOG_INFO("%s: n_ctx_train = %u\n", __func__, hparams.n_ctx_train);
@@ -7780,6 +7803,7 @@ llama_model_params llama_model_default_params() {
/*.check_tensors =*/ false,
/*.use_extra_bufts =*/ true,
/*.no_host =*/ false,
/*.no_alloc =*/ false,
};
return result;
+1 -1
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@@ -599,7 +599,7 @@ static void llama_model_quantize_impl(const std::string & fname_inp, const std::
}
std::vector<std::string> splits = {};
llama_model_loader ml(fname_inp, splits, use_mmap, /*check_tensors*/ true, kv_overrides, nullptr);
llama_model_loader ml(fname_inp, splits, use_mmap, /*check_tensors*/ true, /*no_alloc*/ false, kv_overrides, nullptr);
ml.init_mappings(false); // no prefetching
llama_model model(llama_model_default_params());
+646 -1
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@@ -28,11 +28,14 @@ static bool old_mixtral_warning_showed = false;
#include "ggml-backend.h"
#include <algorithm>
#include <cassert>
#include <cinttypes>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <stdexcept>
#include <functional>
#include <numeric>
#include <type_traits>
@@ -64,6 +67,643 @@ const char * llama_flash_attn_type_name(enum llama_flash_attn_type flash_attn_ty
GGML_ABORT("fatal error");
}
struct llama_device_memory_data {
int64_t total;
int64_t free;
llama_memory_breakdown_data mb;
};
static std::vector<llama_device_memory_data> llama_get_device_memory_data(
const char * path_model, const llama_model_params * mparams, const llama_context_params * cparams,
std::vector<ggml_backend_dev_t> & devs, uint32_t & hp_ngl, uint32_t & hp_n_ctx_train, uint32_t & hp_n_expert,
const ggml_log_level log_level) {
struct user_data_t {
struct {
ggml_log_callback callback;
void * user_data;
} original_logger;
ggml_log_level min_level; // prints below this log level go to debug log
};
user_data_t ud;
llama_log_get(&ud.original_logger.callback, &ud.original_logger.user_data);
ud.min_level = log_level;
llama_log_set([](ggml_log_level level, const char * text, void * user_data) {
const user_data_t * ud = (const user_data_t *) user_data;
const ggml_log_level level_eff = level >= ud->min_level ? level : GGML_LOG_LEVEL_DEBUG;
ud->original_logger.callback(level_eff, text, ud->original_logger.user_data);
}, &ud);
llama_model_params mparams_copy = *mparams;
mparams_copy.no_alloc = true;
mparams_copy.use_mmap = false;
llama_model * model = llama_model_load_from_file(path_model, mparams_copy);
if (model == nullptr) {
llama_log_set(ud.original_logger.callback, ud.original_logger.user_data);
throw std::runtime_error("failed to load model");
}
llama_context * ctx = llama_init_from_model(model, *cparams);
if (ctx == nullptr) {
llama_model_free(model);
llama_log_set(ud.original_logger.callback, ud.original_logger.user_data);
throw std::runtime_error("failed to create llama_context from model");
}
std::vector<llama_device_memory_data> ret(model->devices.size());
std::map<ggml_backend_buffer_type_t, llama_memory_breakdown_data> memory_breakdown = ctx->memory_breakdown();
for (const auto & [buft, mb] : memory_breakdown) {
if (ggml_backend_buft_is_host(buft)) {
continue;
}
ggml_backend_dev_t dev = ggml_backend_buft_get_device(buft);
if (!dev) {
continue;
}
for (size_t i = 0; i < ret.size(); i++) {
if (model->devices[i] == dev) {
ret[i].mb.model += mb.model;
ret[i].mb.context += mb.context;
ret[i].mb.compute += mb.compute;
break;
}
}
}
for (size_t i = 0; i < ret.size(); i++) {
size_t free, total;
ggml_backend_dev_memory(model->devices[i], &free, &total);
ret[i].free = free;
ret[i].total = total;
}
devs = model->devices;
hp_ngl = model->hparams.n_layer;
hp_n_ctx_train = model->hparams.n_ctx_train;
hp_n_expert = model->hparams.n_expert;
llama_memory_breakdown_print(ctx); // goes to debug log
llama_free(ctx);
llama_model_free(model);
llama_log_set(ud.original_logger.callback, ud.original_logger.user_data);
return ret;
}
// enum to identify part of a layer for distributing its tensors:
enum layer_fraction_t {
LAYER_FRACTION_NONE = 0, // nothing
LAYER_FRACTION_ATTN = 1, // attention
LAYER_FRACTION_UP = 2, // attention + up
LAYER_FRACTION_GATE = 3, // attention + up + gate
LAYER_FRACTION_MOE = 4, // everything but sparse MoE weights
};
// this enum is only used in llama_params_fit_impl but needs to be defined outside of it to fix a Windows compilation issue
static void llama_params_fit_impl(
const char * path_model, struct llama_model_params * mparams, struct llama_context_params * cparams,
float * tensor_split, struct llama_model_tensor_buft_override * tensor_buft_overrides,
size_t margin_s, uint32_t n_ctx_min, enum ggml_log_level log_level) {
constexpr int64_t MiB = 1024*1024;
const int64_t margin = margin_s; // this function uses int64_t rather than size_t for memory sizes to more conveniently handle deficits
typedef std::vector<llama_device_memory_data> dmds_t;
const llama_model_params default_mparams = llama_model_default_params();
std::vector<ggml_backend_dev_t> devs;
uint32_t hp_ngl = 0; // hparams.n_gpu_layers
uint32_t hp_nct = 0; // hparams.n_ctx_train
uint32_t hp_nex = 0; // hparams.n_expert
// step 1: get data for default parameters and check whether any changes are necessary in the first place
LLAMA_LOG_DEBUG("%s: getting device memory data for initial parameters:\n", __func__);
const dmds_t dmds_full = llama_get_device_memory_data(path_model, mparams, cparams, devs, hp_ngl, hp_nct, hp_nex, log_level);
const size_t nd = devs.size(); // number of devices
if (nd == 0) {
LLAMA_LOG_INFO("%s: no devices with dedicated memory found\n", __func__);
return;
}
std::vector<std::string> dev_names;
{
dev_names.reserve(nd);
size_t max_length = 0;
for (ggml_backend_dev_t dev : devs) {
std::string name = ggml_backend_dev_name(dev);
name += " (";
name += ggml_backend_dev_description(dev);
name += ")";
dev_names.push_back(name);
max_length = std::max(max_length, name.length());
}
for (std::string & dn : dev_names) {
dn.insert(dn.end(), max_length - dn.length(), ' ');
}
}
int64_t sum_total = 0;
int64_t sum_projected_free = 0;
int64_t min_projected_free = INT64_MAX;
int64_t sum_projected_used = 0;
int64_t sum_projected_ctx = 0;
if (nd > 1) {
LLAMA_LOG_INFO("%s: projected memory use with initial parameters [MiB]:\n", __func__);
}
for (size_t id = 0; id < nd; id++) {
const llama_device_memory_data & dmd = dmds_full[id];
const int64_t projected_used = dmd.mb.total();
const int64_t projected_free = dmd.free - projected_used;
sum_total += dmd.total;
sum_projected_used += projected_used;
sum_projected_free += projected_free;
min_projected_free = std::min(min_projected_free, projected_free);
sum_projected_ctx += dmd.mb.context;
if (nd > 1) {
LLAMA_LOG_INFO("%s: - %s: %6" PRId64 " total, %6" PRId64 " used, %6" PRId64 " %s\n",
__func__, dev_names[id].c_str(), dmd.total/MiB, projected_used/MiB, std::abs(projected_free)/MiB,
projected_free >= 0 ? "surplus" : "deficit");
}
}
assert(sum_total >= 0 && sum_projected_used >= 0 && sum_projected_ctx >= 0);
assert(sum_projected_used >= sum_projected_ctx);
LLAMA_LOG_INFO("%s: projected to use %" PRId64 " MiB of device memory vs. %" PRId64 " MiB of free device memory\n",
__func__, sum_projected_used/MiB, sum_total/MiB);
if (min_projected_free >= margin) {
if (nd == 1) {
LLAMA_LOG_INFO("%s: will leave %" PRId64 " >= %" PRId64 " MiB of free device memory, no changes needed\n",
__func__, min_projected_free/MiB, margin/MiB);
return;
}
LLAMA_LOG_INFO("%s: will leave at least %" PRId64 " >= %" PRId64 " MiB of free memory on all devices, no changes needed\n",
__func__, min_projected_free/MiB, margin/MiB);
return;
}
// step 2: try reducing memory use by reducing the context size
{
int64_t global_surplus = sum_projected_free - int64_t(nd)*margin;
if (global_surplus < 0) {
LLAMA_LOG_INFO(nd == 1 ?
"%s: cannot fulfill margin of %" PRId64 " MiB, need to reduce device memory by %" PRId64 " MiB\n" :
"%s: cannot fulfill margin of %" PRId64 " MiB on all devices, need to use %" PRId64 " MiB less in total\n",
__func__, margin/MiB, -global_surplus/MiB);
if (cparams->n_ctx == 0) {
if (hp_nct > n_ctx_min) {
const int64_t bytes_per_ctx = sum_projected_ctx / hp_nct;
const uint32_t ctx_reduction = std::min(
uint32_t((-global_surplus + bytes_per_ctx - 1) / bytes_per_ctx), hp_nct - n_ctx_min);
cparams->n_ctx = hp_nct - ctx_reduction;
const int64_t memory_reduction = ctx_reduction * bytes_per_ctx;
global_surplus += memory_reduction;
LLAMA_LOG_INFO("%s: context size reduced from %" PRIu32 " to %" PRIu32 " -> need %" PRId64 " MiB less memory in total\n",
__func__, hp_nct, cparams->n_ctx, memory_reduction/MiB);
} else {
LLAMA_LOG_INFO("%s: default model context size is %" PRIu32 " which is <= the min. context size of %" PRIu32 " -> no change\n",
__func__, hp_nct, n_ctx_min);
}
} else {
LLAMA_LOG_INFO("%s: context size set by user to %" PRIu32 " -> no change\n", __func__, cparams->n_ctx);
}
}
if (global_surplus >= 0) {
LLAMA_LOG_INFO("%s: entire model can be fit across devices by reducing context\n", __func__);
return;
}
}
if (mparams->n_gpu_layers != default_mparams.n_gpu_layers) {
throw std::runtime_error("n_gpu_layers already set by user to " + std::to_string(mparams->n_gpu_layers) + ", abort");
}
if (nd > 1) {
if (!tensor_split) {
throw std::runtime_error("did not provide a buffer to write the tensor_split to, abort");
}
if (mparams->tensor_split) {
for (size_t id = 0; id < nd; id++) {
if (mparams->tensor_split[id] != 0.0f) {
throw std::runtime_error("model_params::tensor_split already set by user, abort");
}
}
}
if (mparams->split_mode == LLAMA_SPLIT_MODE_ROW) {
throw std::runtime_error("changing weight allocation for LLAMA_SPLIT_MODE_ROW not implemented, abort");
}
if (hp_ngl < 2*nd) {
throw std::runtime_error("model has only " + std::to_string(hp_ngl) + " layers but need at least "
+ std::to_string(2*nd) + " to fit memory for " + std::to_string(nd) + " devices, abort");
}
}
if (!tensor_buft_overrides) {
throw std::runtime_error("did not provide buffer to set tensor_buft_overrides, abort");
}
if (mparams->tensor_buft_overrides && (mparams->tensor_buft_overrides->pattern || mparams->tensor_buft_overrides->buft)) {
throw std::runtime_error("model_params::tensor_buft_overrides already set by user, abort");
}
// step 3: iteratively fill the back to front with "dense" layers
// - for a dense model simply fill full layers, giving each device a contiguous slice of the model
// - for a MoE model, same as dense model but with all MoE tensors in system memory
// utility function that returns a static C string matching the tensors for a specific layer index and layer fraction:
auto get_overflow_pattern = [&](const size_t il, const layer_fraction_t lf) -> const char * {
constexpr size_t n_strings = 1000;
if (il >= n_strings) {
throw std::runtime_error("at most " + std::to_string(n_strings) + " model layers are supported");
}
switch (lf) {
case LAYER_FRACTION_ATTN: {
static std::array<std::string, n_strings> patterns;
if (patterns[il].empty()) {
patterns[il] = "blk\\." + std::to_string(il) + "\\.ffn_(up|gate|down).*";
}
return patterns[il].c_str();
}
case LAYER_FRACTION_UP: {
static std::array<std::string, n_strings> patterns;
if (patterns[il].empty()) {
patterns[il] = "blk\\." + std::to_string(il) + "\\.ffn_(gate|down).*";
}
return patterns[il].c_str();
}
case LAYER_FRACTION_GATE: {
static std::array<std::string, n_strings> patterns;
if (patterns[il].empty()) {
patterns[il] = "blk\\." + std::to_string(il) + "\\.ffn_down.*";
}
return patterns[il].c_str();
}
case LAYER_FRACTION_MOE: {
static std::array<std::string, n_strings> patterns;
if (patterns[il].empty()) {
patterns[il] = "blk\\." + std::to_string(il) + "\\.ffn_(up|down|gate)_(ch|)exps";
}
return patterns[il].c_str();
}
default:
GGML_ABORT("fatal error");
}
};
struct ngl_t {
uint32_t n_layer = 0; // number of total layers
uint32_t n_part = 0; // number of partial layers, <= n_layer
// for the first partial layer varying parts can overflow, all further layers use LAYER_FRACTION_MOE:
layer_fraction_t overflow_type = LAYER_FRACTION_MOE;
};
const size_t ntbo = llama_max_tensor_buft_overrides();
// utility function to set n_gpu_layers and tensor_split
auto set_ngl_tensor_split_tbo = [&](
const std::vector<ngl_t> & ngl_per_device,
const std::vector<ggml_backend_buffer_type_t> & overflow_bufts,
llama_model_params & mparams,
const bool add_nonrepeating) {
mparams.n_gpu_layers = 0;
for (size_t id = 0; id < nd; id++) {
mparams.n_gpu_layers += ngl_per_device[id].n_layer;
if (nd > 1) {
tensor_split[id] = ngl_per_device[id].n_layer;
}
}
assert(uint32_t(mparams.n_gpu_layers) <= hp_ngl);
uint32_t il0 = hp_ngl - mparams.n_gpu_layers; // start index for tensor buft overrides
if (add_nonrepeating) {
mparams.n_gpu_layers += 1;
tensor_split[nd - 1] += 1;
}
mparams.tensor_split = tensor_split;
size_t itbo = 0;
for (size_t id = 0; id < nd; id++) {
il0 += ngl_per_device[id].n_layer - ngl_per_device[id].n_part;
for (uint32_t il = il0; il < il0 + ngl_per_device[id].n_part; il++) {
if (itbo + 1 >= ntbo) {
tensor_buft_overrides[itbo].pattern = nullptr;
tensor_buft_overrides[itbo].buft = nullptr;
itbo++;
mparams.tensor_buft_overrides = tensor_buft_overrides;
throw std::runtime_error("llama_params_fit_n_tensor_buft_overrides() == "
+ std::to_string(ntbo) + " is insufficient for model\n");
}
tensor_buft_overrides[itbo].pattern = get_overflow_pattern(il, il == il0 ? ngl_per_device[id].overflow_type : LAYER_FRACTION_MOE);
tensor_buft_overrides[itbo].buft = overflow_bufts[id];
itbo++;
}
il0 += ngl_per_device[id].n_part;
}
tensor_buft_overrides[itbo].pattern = nullptr;
tensor_buft_overrides[itbo].buft = nullptr;
itbo++;
mparams.tensor_buft_overrides = tensor_buft_overrides;
};
// utility function that returns the memory use per device for given numbers of layers per device
auto get_memory_for_layers = [&](
const char * func_name,
const std::vector<ngl_t> & ngl_per_device,
const std::vector<ggml_backend_buffer_type_t> & overflow_bufts,
const bool add_nonrepeating) -> std::vector<int64_t> {
llama_model_params mparams_copy = *mparams;
set_ngl_tensor_split_tbo(ngl_per_device, overflow_bufts, mparams_copy, add_nonrepeating);
const dmds_t dmd_nl = llama_get_device_memory_data(
path_model, &mparams_copy, cparams, devs, hp_ngl, hp_nct, hp_nex, log_level);
LLAMA_LOG_DEBUG("%s: memory for test allocation by device:\n", func_name);
for (size_t id = 0; id < nd; id++) {
const ngl_t & n = ngl_per_device[id];
LLAMA_LOG_DEBUG(
"%s: id=%zu, n_layer=%2" PRIu32 ", n_part=%2" PRIu32 ", overflow_type=%d, mem=%6" PRId64 " MiB\n",
func_name, id, n.n_layer, n.n_part, int(n.overflow_type), dmd_nl[id].mb.total()/MiB);
}
std::vector<int64_t> ret;
ret.reserve(nd);
for (const llama_device_memory_data & dmd : dmd_nl) {
ret.push_back(dmd.mb.total());
}
return ret;
};
int64_t global_surplus_cpu_moe = 0;
if (hp_nex > 0) {
const static std::string pattern_moe_all = "blk\\.\\d+\\.ffn_(up|down|gate)_(ch|)exps"; // matches all MoE tensors
ggml_backend_buffer_type_t cpu_buft = ggml_backend_cpu_buffer_type();
tensor_buft_overrides[0] = {pattern_moe_all.c_str(), cpu_buft};
tensor_buft_overrides[1] = {nullptr, nullptr};
mparams->tensor_buft_overrides = tensor_buft_overrides;
LLAMA_LOG_DEBUG("%s: getting device memory data with all MoE tensors moved to system memory:\n", __func__);
const dmds_t dmds_cpu_moe = llama_get_device_memory_data(
path_model, mparams, cparams, devs, hp_ngl, hp_nct, hp_nex, log_level);
for (const llama_device_memory_data & dmd : dmds_cpu_moe) {
global_surplus_cpu_moe += dmd.free;
global_surplus_cpu_moe -= int64_t(dmd.mb.total()) + margin;
}
if (global_surplus_cpu_moe > 0) {
LLAMA_LOG_INFO("%s: with only dense weights in device memory there is a total surplus of %" PRId64 " MiB\n",
__func__, global_surplus_cpu_moe/MiB);
} else {
LLAMA_LOG_INFO("%s: with only dense weights in device memory there is still a total deficit of %" PRId64 " MiB\n",
__func__, -global_surplus_cpu_moe/MiB);
}
// reset
tensor_buft_overrides[0] = {nullptr, nullptr};
mparams->tensor_buft_overrides = tensor_buft_overrides;
}
std::vector<int64_t> targets; // maximum acceptable memory use per device
targets.reserve(nd);
for (size_t id = 0; id < nd; id++) {
targets.push_back(dmds_full[id].free - margin);
LLAMA_LOG_DEBUG("%s: id=%zu, target=%" PRId64 " MiB\n", __func__, id, targets[id]/MiB);
}
// whether for the optimal memory use we expect to load at least some MoE tensors:
const bool partial_moe = hp_nex > 0 && global_surplus_cpu_moe > 0;
std::vector<ggml_backend_buffer_type_t> overflow_bufts; // which bufts the partial layers of a device overflow to:
overflow_bufts.reserve(nd);
for (size_t id = 0; id < nd - 1; ++id) {
overflow_bufts.push_back(ggml_backend_dev_buffer_type(devs[id + 1]));
}
overflow_bufts.push_back(ggml_backend_cpu_buffer_type());
std::vector<ngl_t> ngl_per_device(nd);
std::vector<int64_t> mem = get_memory_for_layers(__func__, ngl_per_device, overflow_bufts, partial_moe);
if (hp_nex > 0) {
for (size_t id = 0; id < nd; id++) {
ngl_per_device[id].overflow_type = LAYER_FRACTION_MOE;
}
}
// optimize the number of layers per device using the method of false position:
// - ngl_per_device has 0 layers for each device, lower bound
// - try a "high" configuration where a device is given all unassigned layers
// - interpolate the memory use / layer between low and high linearly to get a guess where it meets our target
// - check memory use of our guess, replace either the low or high bound
// - once we only have a difference of a single layer, stop and return the lower bound that just barely still fits
if (hp_nex == 0) {
LLAMA_LOG_INFO("%s: filling dense layers back-to-front:\n", __func__);
} else {
LLAMA_LOG_INFO("%s: filling dense-only layers back-to-front:\n", __func__);
}
uint32_t n_unassigned = hp_ngl;
for (int id = nd - 1; id >= 0; id--) {
std::vector<ngl_t> ngl_per_device_high = ngl_per_device;
ngl_per_device_high[id].n_layer = n_unassigned;
if (hp_nex > 0) {
ngl_per_device_high[id].n_part = ngl_per_device_high[id].n_layer;
}
if (ngl_per_device_high[id].n_layer > 0) {
std::vector<int64_t> mem_high = get_memory_for_layers(__func__, ngl_per_device_high, overflow_bufts, partial_moe);
if (mem_high[id] > targets[id]) {
uint32_t delta = ngl_per_device_high[id].n_layer - ngl_per_device[id].n_layer;
while (delta > 1) {
uint32_t step_size = int64_t(delta) * (targets[id] - mem[id]) / (mem_high[id] - mem[id]);
step_size = std::max(step_size, uint32_t(1));
step_size = std::min(step_size, delta - 1);
std::vector<ngl_t> ngl_per_device_test = ngl_per_device;
ngl_per_device_test[id].n_layer += step_size;
if (hp_nex) {
ngl_per_device_test[id].n_part += step_size;
}
const std::vector<int64_t> mem_test = get_memory_for_layers(__func__, ngl_per_device_test, overflow_bufts, partial_moe);
if (mem_test[id] <= targets[id]) {
ngl_per_device = ngl_per_device_test;
mem = mem_test;
n_unassigned -= ngl_per_device[id].n_layer;
LLAMA_LOG_DEBUG("%s: set ngl_per_device[%d].n_layer=%" PRIu32 "\n", __func__, id, ngl_per_device[id].n_layer);
} else {
ngl_per_device_high = ngl_per_device_test;
mem_high = mem_test;
LLAMA_LOG_DEBUG("%s: set ngl_per_device_high[%d].n_layer=%" PRIu32 "\n", __func__, id, ngl_per_device[id].n_layer);
}
delta = ngl_per_device_high[id].n_layer - ngl_per_device[id].n_layer;
}
} else {
ngl_per_device = ngl_per_device_high;
n_unassigned -= ngl_per_device[id].n_layer;
LLAMA_LOG_DEBUG("%s: set ngl_per_device[%d].n_layer=%" PRIu32 "\n", __func__, id, ngl_per_device[id].n_layer);
}
}
const int64_t projected_margin = dmds_full[id].free - mem[id];
LLAMA_LOG_INFO(
"%s: - %s: %2" PRIu32 " layers, %6" PRId64 " MiB used, %6" PRId64 " MiB free\n",
__func__, dev_names[id].c_str(), ngl_per_device[id].n_layer, mem[id]/MiB, projected_margin/MiB);
}
if (hp_nex == 0 || global_surplus_cpu_moe <= 0) {
set_ngl_tensor_split_tbo(ngl_per_device, overflow_bufts, *mparams, partial_moe);
return;
}
// step 4: for a MoE model where all dense tensors fit,
// convert the dense-only layers in the back to full layers in the front until all devices are full
// essentially the same procedure as for the dense-only layers except front-to-back
// also, try fitting at least part of one more layer to reduce waste for "small" GPUs with e.g. 24 GiB VRAM
size_t id_dense_start = nd;
for (int id = nd - 1; id >= 0; id--) {
if (ngl_per_device[id].n_layer > 0) {
id_dense_start = id;
continue;
}
break;
}
assert(id_dense_start < nd);
LLAMA_LOG_INFO("%s: converting dense-only layers to full layers and filling them front-to-back with overflow to next device/system memory:\n", __func__);
for (size_t id = 0; id <= id_dense_start; id++) {
std::vector<ngl_t> ngl_per_device_high = ngl_per_device;
for (size_t jd = id_dense_start; jd < nd; jd++) {
const uint32_t n_layer_move = ngl_per_device_high[jd].n_layer;
ngl_per_device_high[id].n_layer += n_layer_move;
ngl_per_device_high[jd].n_layer -= n_layer_move;
ngl_per_device_high[jd].n_part = 0;
}
size_t id_dense_start_high = nd - 1;
std::vector<int64_t> mem_high = get_memory_for_layers(__func__, ngl_per_device_high, overflow_bufts, partial_moe);
if (mem_high[id] > targets[id]) {
assert(ngl_per_device_high[id].n_layer >= ngl_per_device_high[id].n_part);
assert(ngl_per_device[id].n_layer >= ngl_per_device[id].n_part);
assert((ngl_per_device_high[id].n_layer - ngl_per_device_high[id].n_part)
>= ngl_per_device[id].n_layer - ngl_per_device[id].n_part);
uint32_t delta = (ngl_per_device_high[id].n_layer - ngl_per_device_high[id].n_part)
- (ngl_per_device[id].n_layer - ngl_per_device[id].n_part);
while (delta > 1) {
uint32_t step_size = int64_t(delta) * (targets[id] - mem[id]) / (mem_high[id] - mem[id]);
step_size = std::max(step_size, uint32_t(1));
step_size = std::min(step_size, delta - 1);
std::vector<ngl_t> ngl_per_device_test = ngl_per_device;
size_t id_dense_start_test = id_dense_start;
uint32_t n_converted_test = 0;
for (;id_dense_start_test < nd; id_dense_start_test++) {
const uint32_t n_convert_jd = std::min(step_size - n_converted_test, ngl_per_device_test[id_dense_start_test].n_part);
ngl_per_device_test[id_dense_start_test].n_layer -= n_convert_jd;
ngl_per_device_test[id_dense_start_test].n_part -= n_convert_jd;
ngl_per_device_test[id].n_layer += n_convert_jd;
n_converted_test += n_convert_jd;
if (ngl_per_device_test[id_dense_start_test].n_layer > 0) {
break;
}
}
const std::vector<int64_t> mem_test = get_memory_for_layers(__func__, ngl_per_device_test, overflow_bufts, partial_moe);
if (mem_test[id] <= targets[id]) {
ngl_per_device = ngl_per_device_test;
mem = mem_test;
id_dense_start = id_dense_start_test;
LLAMA_LOG_DEBUG("%s: set ngl_per_device[%zu].(n_layer, n_part)=(%" PRIu32 ", %" PRIu32 "), id_dense_start=%zu\n",
__func__, id, ngl_per_device[id].n_layer, ngl_per_device[id].n_part, id_dense_start);
} else {
ngl_per_device_high = ngl_per_device_test;
mem_high = mem_test;
id_dense_start_high = id_dense_start_test;
LLAMA_LOG_DEBUG("%s: set ngl_per_device_high[%zu].(n_layer, n_part)=(%" PRIu32 ", %" PRIu32 "), id_dense_start_high=%zu\n",
__func__, id, ngl_per_device_high[id].n_layer, ngl_per_device_high[id].n_part, id_dense_start_high);
}
delta = (ngl_per_device_high[id].n_layer - ngl_per_device_high[id].n_part)
- (ngl_per_device[id].n_layer - ngl_per_device[id].n_part);
}
} else {
ngl_per_device = ngl_per_device_high;
id_dense_start = id_dense_start_high;
LLAMA_LOG_DEBUG("%s: set ngl_per_device[%zu].(n_layer, n_part)=(%" PRIu32 ", %" PRIu32 "), id_dense_start=%zu\n",
__func__, id, ngl_per_device[id].n_layer, ngl_per_device[id].n_part, id_dense_start);
}
// try to fit at least part of one more layer
if (ngl_per_device[id_dense_start].n_layer > 0) {
std::vector<ngl_t> ngl_per_device_test = ngl_per_device;
size_t id_dense_start_test = id_dense_start;
ngl_per_device_test[id_dense_start_test].n_layer--;
ngl_per_device_test[id_dense_start_test].n_part--;
ngl_per_device_test[id].n_layer++;
ngl_per_device_test[id].n_part++;
if (ngl_per_device_test[id_dense_start_test].n_layer == 0) {
id_dense_start_test++;
}
ngl_per_device_test[id].overflow_type = LAYER_FRACTION_UP;
LLAMA_LOG_DEBUG("%s: trying to fit one extra layer with overflow_type=LAYER_FRACTION_UP\n", __func__);
std::vector<int64_t> mem_test = get_memory_for_layers(__func__, ngl_per_device_test, overflow_bufts, partial_moe);
if (mem_test[id] < targets[id]) {
ngl_per_device = ngl_per_device_test;
mem = mem_test;
id_dense_start = id_dense_start_test;
LLAMA_LOG_DEBUG("%s: set ngl_per_device[%zu].(n_layer, n_part, overflow_type)=(%" PRIu32 ", %" PRIu32 ", UP), id_dense_start=%zu\n",
__func__, id, ngl_per_device[id].n_layer, ngl_per_device[id].n_part, id_dense_start);
ngl_per_device_test[id].overflow_type = LAYER_FRACTION_GATE;
LLAMA_LOG_DEBUG("%s: trying to fit one extra layer with overflow_type=LAYER_FRACTION_GATE\n", __func__);
mem_test = get_memory_for_layers(__func__, ngl_per_device_test, overflow_bufts, partial_moe);
if (mem_test[id] < targets[id]) {
ngl_per_device = ngl_per_device_test;
mem = mem_test;
id_dense_start = id_dense_start_test;
LLAMA_LOG_DEBUG("%s: set ngl_per_device[%zu].(n_layer, n_part, overflow_type)=(%" PRIu32 ", %" PRIu32 ", GATE), id_dense_start=%zu\n",
__func__, id, ngl_per_device[id].n_layer, ngl_per_device[id].n_part, id_dense_start);
}
} else {
ngl_per_device_test[id].overflow_type = LAYER_FRACTION_ATTN;
LLAMA_LOG_DEBUG("%s: trying to fit one extra layer with overflow_type=LAYER_FRACTION_ATTN\n", __func__);
mem_test = get_memory_for_layers(__func__, ngl_per_device_test, overflow_bufts, partial_moe);
if (mem_test[id] < targets[id]) {
ngl_per_device = ngl_per_device_test;
mem = mem_test;
id_dense_start = id_dense_start_test;
LLAMA_LOG_DEBUG("%s: set ngl_per_device[%zu].(n_layer, n_part, overflow_type)=(%" PRIu32 ", %" PRIu32 ", ATTN), id_dense_start=%zu\n",
__func__, id, ngl_per_device[id].n_layer, ngl_per_device[id].n_part, id_dense_start);
}
}
}
const int64_t projected_margin = dmds_full[id].free - mem[id];
LLAMA_LOG_INFO(
"%s: - %s: %2" PRIu32 " layers (%2" PRIu32 " overflowing), %6" PRId64 " MiB used, %6" PRId64 " MiB free\n",
__func__, dev_names[id].c_str(), ngl_per_device[id].n_layer, ngl_per_device[id].n_part, mem[id]/MiB, projected_margin/MiB);
}
set_ngl_tensor_split_tbo(ngl_per_device, overflow_bufts, *mparams, partial_moe);
}
bool llama_params_fit(
const char * path_model, struct llama_model_params * mparams, struct llama_context_params * cparams,
float * tensor_split, struct llama_model_tensor_buft_override * tensor_buft_overrides,
size_t margin_s, uint32_t n_ctx_min, enum ggml_log_level log_level) {
const int64_t t0_us = llama_time_us();
bool ok = true;
try {
llama_params_fit_impl(path_model, mparams, cparams, tensor_split, tensor_buft_overrides, margin_s, n_ctx_min, log_level);
LLAMA_LOG_INFO("%s: successfully fit params to free device memory\n", __func__);
} catch (const std::runtime_error & e) {
LLAMA_LOG_WARN("%s: failed to fit params to free device memory: %s\n", __func__, e.what());
ok = false;
}
const int64_t t1_us = llama_time_us();
LLAMA_LOG_INFO("%s: fitting params to free memory took %.2f seconds\n", __func__, (t1_us - t0_us) * 1e-6);
return ok;
}
struct llama_sampler_chain_params llama_sampler_chain_default_params() {
struct llama_sampler_chain_params result = {
/*.no_perf =*/ true,
@@ -76,6 +716,10 @@ size_t llama_max_devices(void) {
return 16;
}
size_t llama_max_tensor_buft_overrides() {
return 4096;
}
bool llama_supports_mmap(void) {
return llama_mmap::SUPPORTED;
}
@@ -139,11 +783,12 @@ static int llama_model_load(const std::string & fname, std::vector<std::string>
model.t_start_us = tm.t_start_us;
try {
llama_model_loader ml(fname, splits, params.use_mmap, params.check_tensors, params.kv_overrides, params.tensor_buft_overrides);
llama_model_loader ml(fname, splits, params.use_mmap, params.check_tensors, params.no_alloc, params.kv_overrides, params.tensor_buft_overrides);
ml.print_info();
model.hparams.vocab_only = params.vocab_only;
model.hparams.no_alloc = params.no_alloc;
try {
model.load_arch(ml);
+1
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@@ -0,0 +1 @@
TODO
+8
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@@ -0,0 +1,8 @@
set(TARGET llama-fit-params)
add_executable(${TARGET} fit-params.cpp)
target_link_libraries(${TARGET} PRIVATE common llama ${CMAKE_THREAD_LIBS_INIT})
target_compile_features(${TARGET} PRIVATE cxx_std_17)
if(LLAMA_TOOLS_INSTALL)
install(TARGETS ${TARGET} RUNTIME)
endif()
+55
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@@ -0,0 +1,55 @@
# fit-params
llama.cpp binaries can automatically fit the projected memory use of a model to the free device memory available at runtime,
this is controlled using the CLI arguments starting with `-fit`/`--fit`.
Internally the code is calling `llama_params_fit` to adjust the `llama_model_params` and `llama_context_params` structs.
`llama-fit-params` is a simple utility that prints the CLI arguments corresponding to these adjustments to stdout.
Example usage:
``` bash
# First, run llama-fit-params and store the results in a file:
> ./build/bin/llama-fit-params --model /opt/models/qwen_3-30b3a-f16.gguf | tee args.txt
ggml_cuda_init: GGML_CUDA_FORCE_MMQ: no
ggml_cuda_init: GGML_CUDA_FORCE_CUBLAS: no
ggml_cuda_init: found 1 CUDA devices:
Device 0: NVIDIA GeForce RTX 4090, compute capability 8.9, VMM: yes
build: 6895 (4341dc8bc) with cc (GCC) 15.2.1 20250813 for x86_64-pc-linux-gnu
llama_params_fit_impl: projected to use 61807 MiB of device memory vs. 24077 MiB of free device memory
llama_params_fit_impl: cannot fulfill margin of 1024 MiB, need to reduce device memory by 42444 MiB
llama_params_fit_impl: context size reduced from 40960 to 4096 -> need 3456 MiB less memory in total
llama_params_fit_impl: with only dense weights in device memory there is a total surplus of 16164 MiB
llama_params_fit_impl: distributing layers across devices with overflow to next device/system memory:
llama_params_fit_impl: - CUDA0 (NVIDIA GeForce RTX 4090): 48 layers (34 overflowing), 19187 MiB used, 1199 MiB free
llama_params_fit: successfully fit params to free device memory
llama_params_fit: fitting params to free memory took 1.15 seconds
Printing fitted CLI arguments to stdout...
-c 4096 -ngl 48 -ot blk\.14\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.15\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.16\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.17\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.18\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.19\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.20\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.21\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.22\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.23\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.24\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.25\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.26\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.27\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.28\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.29\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.30\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.31\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.32\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.33\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.34\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.35\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.36\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.37\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.38\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.39\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.40\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.41\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.42\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.43\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.44\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.45\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.46\.ffn_(up|down|gate)_(ch|)exps=CPU,blk\.47\.ffn_(up|down|gate)_(ch|)exps=CPU
# Next, use those results for a llama.cpp binary:
> cat args.txt | xargs ./build/bin/llama-server --model /opt/models/qwen_3-30b3a-f16.gguf
ggml_cuda_init: GGML_CUDA_FORCE_MMQ: no
ggml_cuda_init: GGML_CUDA_FORCE_CUBLAS: no
ggml_cuda_init: found 1 CUDA devices:
Device 0: NVIDIA GeForce RTX 4090, compute capability 8.9, VMM: yes
build: 6895 (4341dc8bc) with cc (GCC) 15.2.1 20250813 for x86_64-pc-linux-gnu
system info: n_threads = 16, n_threads_batch = 16, total_threads = 32
system_info: n_threads = 16 (n_threads_batch = 16) / 32 | CUDA : ARCHS = 890 | USE_GRAPHS = 1 | PEER_MAX_BATCH_SIZE = 128 | CPU : SSE3 = 1 | SSSE3 = 1 | AVX = 1 | AVX_VNNI = 1 | AVX2 = 1 | F16C = 1 | FMA = 1 | BMI2 = 1 | AVX512 = 1 | AVX512_VBMI = 1 | AVX512_VNNI = 1 | AVX512_BF16 = 1 | LLAMAFILE = 1 | OPENMP = 1 | REPACK = 1 |
main: binding port with default address family
main: HTTP server is listening, hostname: 127.0.0.1, port: 8080, http threads: 31
main: loading model
srv load_model: loading model '/opt/models/qwen_3-30b3a-f16.gguf'
llama_params_fit_impl: projected to use 19187 MiB of device memory vs. 24077 MiB of free device memory
llama_params_fit_impl: will leave 1199 >= 1024 MiB of free device memory, no changes needed
llama_params_fit: successfully fit params to free device memory
llama_params_fit: fitting params to free memory took 0.28 seconds
[...]
main: server is listening on http://127.0.0.1:8080 - starting the main loop
srv update_slots: all slots are idle
^Csrv operator(): operator(): cleaning up before exit...
llama_memory_breakdown_print: | memory breakdown [MiB] | total free self model context compute unaccounted |
llama_memory_breakdown_print: | - CUDA0 (RTX 4090) | 24077 = 945 + (19187 = 17904 + 384 + 898) + 3945 |
llama_memory_breakdown_print: | - Host | 58271 = 58259 + 0 + 12 |
```
+62
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@@ -0,0 +1,62 @@
#include "llama.h"
#include "arg.h"
#include "common.h"
#include "log.h"
#include <iostream>
#if defined(_MSC_VER)
#pragma warning(disable: 4244 4267) // possible loss of data
#endif
int main(int argc, char ** argv) {
common_params params;
if (!common_params_parse(argc, argv, params, LLAMA_EXAMPLE_COMMON)) {
return 1;
}
common_init();
llama_backend_init();
llama_numa_init(params.numa);
auto mparams = common_model_params_to_llama(params);
auto cparams = common_context_params_to_llama(params);
llama_params_fit(params.model.path.c_str(), &mparams, &cparams,
params.tensor_split, params.tensor_buft_overrides.data(), params.fit_params_target, params.fit_params_min_ctx,
params.verbosity >= 4 ? GGML_LOG_LEVEL_DEBUG : GGML_LOG_LEVEL_ERROR);
LOG_INF("Printing fitted CLI arguments to stdout...\n");
std::cout << "-c " << cparams.n_ctx;
std::cout << " -ngl " << mparams.n_gpu_layers;
size_t nd = llama_max_devices();
while (nd > 1 && mparams.tensor_split[nd - 1] == 0.0f) {
nd--;
}
if (nd > 1) {
for (size_t id = 0; id < nd; id++) {
if (id == 0) {
std::cout << " -ts ";
}
if (id > 0) {
std::cout << ",";
}
std::cout << mparams.tensor_split[id];
}
}
const size_t ntbo = llama_max_tensor_buft_overrides();
for (size_t itbo = 0; itbo < ntbo && mparams.tensor_buft_overrides[itbo].pattern != nullptr; itbo++) {
if (itbo == 0) {
std::cout << " -ot ";
}
if (itbo > 0) {
std::cout << ",";
}
std::cout << mparams.tensor_buft_overrides[itbo].pattern << "=" << ggml_backend_buft_name(mparams.tensor_buft_overrides[itbo].buft);
}
std::cout << "\n";
return 0;
}
Binary file not shown.
@@ -1,9 +1,11 @@
<script lang="ts">
import { Download, Upload } from '@lucide/svelte';
import { Download, Upload, Trash2 } from '@lucide/svelte';
import { Button } from '$lib/components/ui/button';
import { DialogConversationSelection } from '$lib/components/app';
import { createMessageCountMap } from '$lib/utils';
import { conversationsStore, conversations } from '$lib/stores/conversations.svelte';
import { toast } from 'svelte-sonner';
import DialogConfirmation from '$lib/components/app/dialogs/DialogConfirmation.svelte';
let exportedConversations = $state<DatabaseConversation[]>([]);
let importedConversations = $state<DatabaseConversation[]>([]);
@@ -18,11 +20,14 @@
[]
);
// Delete functionality state
let showDeleteDialog = $state(false);
async function handleExportClick() {
try {
const allConversations = conversations();
if (allConversations.length === 0) {
alert('No conversations to export');
toast.info('No conversations to export');
return;
}
@@ -145,6 +150,36 @@
alert('Failed to import conversations. Please check the file format.');
}
}
async function handleDeleteAllClick() {
try {
const allConversations = conversations();
if (allConversations.length === 0) {
toast.info('No conversations to delete');
return;
}
showDeleteDialog = true;
} catch (err) {
console.error('Failed to load conversations for deletion:', err);
toast.error('Failed to load conversations');
}
}
async function handleDeleteAllConfirm() {
try {
await conversationsStore.deleteAll();
showDeleteDialog = false;
} catch (err) {
console.error('Failed to delete conversations:', err);
}
}
function handleDeleteAllCancel() {
showDeleteDialog = false;
}
</script>
<div class="space-y-6">
@@ -229,6 +264,25 @@
</div>
{/if}
</div>
<div class="grid border-t border-border/30 pt-4">
<h4 class="mb-2 text-sm font-medium text-destructive">Delete All Conversations</h4>
<p class="mb-4 text-sm text-muted-foreground">
Permanently delete all conversations and their messages. This action cannot be undone.
Consider exporting your conversations first if you want to keep a backup.
</p>
<Button
class="text-destructive-foreground w-full justify-start justify-self-start bg-destructive hover:bg-destructive/80 md:w-auto"
onclick={handleDeleteAllClick}
variant="destructive"
>
<Trash2 class="mr-2 h-4 w-4" />
Delete all conversations
</Button>
</div>
</div>
</div>
@@ -249,3 +303,15 @@
onCancel={() => (showImportDialog = false)}
onConfirm={handleImportConfirm}
/>
<DialogConfirmation
bind:open={showDeleteDialog}
title="Delete all conversations"
description="Are you sure you want to delete all conversations? This action cannot be undone and will permanently remove all your conversations and messages."
confirmText="Delete All"
cancelText="Cancel"
variant="destructive"
icon={Trash2}
onConfirm={handleDeleteAllConfirm}
onCancel={handleDeleteAllCancel}
/>
@@ -385,8 +385,7 @@ class ConversationsStore {
this.conversations = this.conversations.filter((c) => c.id !== convId);
if (this.activeConversation?.id === convId) {
this.activeConversation = null;
this.activeMessages = [];
this.clearActiveConversation();
await goto(`?new_chat=true#/`);
}
} catch (error) {
@@ -394,6 +393,29 @@ class ConversationsStore {
}
}
/**
* Deletes all conversations and their messages
*/
async deleteAll(): Promise<void> {
try {
const allConversations = await DatabaseService.getAllConversations();
for (const conv of allConversations) {
await DatabaseService.deleteConversation(conv.id);
}
this.clearActiveConversation();
this.conversations = [];
toast.success('All conversations deleted');
await goto(`?new_chat=true#/`);
} catch (error) {
console.error('Failed to delete all conversations:', error);
toast.error('Failed to delete conversations');
}
}
// ─────────────────────────────────────────────────────────────────────────────
// Import/Export
// ─────────────────────────────────────────────────────────────────────────────