Merge branch 'upstream' into concedo_experimental

# Conflicts:
#	.github/workflows/build.yml
#	AUTHORS
#	ci/run.sh
#	docs/backend/SYCL.md
#	docs/build.md
#	docs/multimodal/minicpmo2.6.md
#	docs/multimodal/minicpmo4.0.md
#	docs/multimodal/minicpmv2.5.md
#	docs/multimodal/minicpmv2.6.md
#	docs/multimodal/minicpmv4.0.md
#	docs/multimodal/minicpmv4.5.md
#	docs/ops.md
#	docs/ops/SYCL.csv
#	docs/speculative.md
#	examples/deprecation-warning/README.md
#	examples/deprecation-warning/deprecation-warning.cpp
#	examples/model-conversion/Makefile
#	examples/model-conversion/scripts/causal/convert-model.sh
#	ggml/include/ggml-cann.h
#	ggml/src/ggml-cann/acl_tensor.cpp
#	ggml/src/ggml-cann/acl_tensor.h
#	ggml/src/ggml-cann/aclnn_ops.cpp
#	ggml/src/ggml-cann/aclnn_ops.h
#	ggml/src/ggml-cann/common.h
#	ggml/src/ggml-cann/ggml-cann.cpp
#	ggml/src/ggml-metal/CMakeLists.txt
#	ggml/src/ggml-opencl/ggml-opencl.cpp
#	ggml/src/ggml-opencl/kernels/concat.cl
#	ggml/src/ggml-opencl/kernels/repeat.cl
#	ggml/src/ggml-opencl/kernels/scale.cl
#	ggml/src/ggml-opencl/kernels/tanh.cl
#	ggml/src/ggml-sycl/CMakeLists.txt
#	ggml/src/ggml-sycl/dpct/helper.hpp
#	ggml/src/ggml-sycl/ggml-sycl.cpp
#	ggml/src/ggml-sycl/outprod.cpp
#	ggml/src/ggml-sycl/rope.cpp
#	ggml/src/ggml-sycl/wkv.cpp
#	src/llama-vocab.cpp
#	tests/test-autorelease.cpp
#	tests/test-backend-ops.cpp
#	tools/cvector-generator/pca.hpp
#	tools/export-lora/export-lora.cpp
#	tools/perplexity/README.md

ggml/src/ggml-backend.cpp

@@ -258,6 +258,7 @@ void ggml_backend_tensor_set_async(ggml_backend_t backend, struct ggml_tensor *
     GGML_ASSERT(offset + size <= ggml_nbytes(tensor) && "tensor write out of bounds");
 
     if (backend->iface.set_tensor_async == NULL) {
+        ggml_backend_synchronize(backend);
         ggml_backend_tensor_set(tensor, data, offset, size);
     } else {
         backend->iface.set_tensor_async(backend, tensor, data, offset, size);
@@ -271,6 +272,7 @@ void ggml_backend_tensor_get_async(ggml_backend_t backend, const struct ggml_ten
     GGML_ASSERT(offset + size <= ggml_nbytes(tensor) && "tensor read out of bounds");
 
     if (backend->iface.get_tensor_async == NULL) {
+        ggml_backend_synchronize(backend);
         ggml_backend_tensor_get(tensor, data, offset, size);
     } else {
         backend->iface.get_tensor_async(backend, tensor, data, offset, size);