Max Krasnyansky
192067b72d
* hexagon: use non-host bufs by default and make the backend fully async * hex-hb: remove optional hostbuf support and fix async copy * hex-unary: relax supported unary check * hex-bufs: use same get_alignment for host bufs * snapdragon: bump android_platform to 34 * hex-rows: super hacky get/set rows for q8_0 * hex-get-rows: fix q8_0 * hex-get-rows: supprot for f16 and cleanup for q8_0 * hex-get-rows: generic macros and specialized thread funcs * hex-get-rows: add DMA pipeline, vtcm_layout and kernel params * hex-set-rows: fix q8_0 support, add dma and tracing * hex-tests: override nmse threshold for HTP of Q8_0 quants * hex-fa: add support for Q8_0 with inplace dequantizers * hex-get-rows: simplify type dispatch * hex-rows: simplify GET/SET_ROWS DMA pipeline * hex-async: add events, set/get-tensor-async and rest of the async api support * hex-repack: use slice instead of expert in repack functions * hex-cpy: update event/async-cpy logging * hex-set-rows: optimize smaller tensors * hex-geglu: fix perf regression with larger tensors * hex-get-rows: add missing header * hex-set-rows: add missing header * hex-bufs: ressurect GGML_HEXAGON_HOSTBUF but disable it by default * hexagon: do not reject ops with non-heaxon buffers * hex-get-rows: apply >=32 restriction only for q8_0 * hex-res: bump vtcm acquire timeout to 10 seconds * hex-bufs: add support for cloning buffers between sessions to speed up tensor copies * hex-async: rework event recording and batch flushing and integrate with meta backend * hex-bufs: improved handling of repacked tensors * hex-repack: handle get_tensor_2d offsets * hex-dev: add support for devices with multiple NPUs * hex-sync: add support for sync tokens to synchronize npu devices for async splits * hex-mmap: cleanup mmap calls and add a retry for robustness * hex-sync: add failsafe if sync wait gets stuck * hex-sync: use sync_seq to check for completed events * hex-sync: rotate tokens for extra robustness * hex-devs: add supprot for legacy device names for now * hex-bufs: add support for auto-cloning buffers from diff sessions * hex-fusion: simplify and optimize htp-opnode fusion handling * hex-sync: override opnode name so that it shows up in the profiles * hex-trace: update scripts to handle multiple devices * hex-sync: bump the size of the opbatch queue and number of sync tokens * hex-cpy-sync: do not explicitly flush opbatches in cpy_tensor_async and add support for cpy-dma * hex-sync: add graph-flush threshold to avoid single op batches * hex-sync: add sync_peer so that we can flush peers we depend on during cross-device ops * hex-bufs: introduce tensor->extra and shadow_bufs for repacking * hex-l2: flush tiny tensors inline * hex-sync: use explicit l2flush for sync tokens * hex-extra: track weight flags via tensor extra * hex-fence: rename sync to fence * hex-repack: proper handling of set-tensor-2d in the shadow_buf * hex-trace: remove obsolete opstage mask that we used for profiling * hex-env: remove obsolete use_hmx variable * hexagon: new unified run.py and build.py and updated docs * snapdragon: update run script to auto-escapt test-backend-op -p argument * hex-scripts: fix trailing spaces * hex-scripts: fix flake8 warnings * snapdragon: cleanup dst lib/bin dirs before copying new build * hex-ops: add support for allreduce * hex-ar: improved allreduce with dma pipeline * hex-ar: align macros * hex-ar: consistent use of fence_seq * hex-ar: add AR_SELECT env var to select ALLREDUCE kernel or fallback * hex-ar: add proper synchronize handling for ALLREDUCE * hex-opbatch: looks like we now just rely on backend.synchronise to flush the batches, no need to flush them by threshold * hex-ar: bump block size to improve dma efficiency * hex-ar: fused ALLREDUCE+ADD * hex-ar: cleaner fence buffer management * hex-ar: futher allreduce tweaking to remove race conditions * hex-ar: add simple solver and remove non-dma kernels * hex-ar: add row-broadcast to fuse with bias ADD * hex-fence: pass seq numbers via op_params * hex-ar: allow for both entry/exit seq for completing entry wait * hex-ar: align macros * hex-ar: do not refetch broadcast row * hex-fusion: move all fusion into opbatch::add_op for consistency with ALLREDUCE and things * hex-fusion: fix incorrect MUL_MAT reordering * hex-mm: make fused 2x and 3x matmuls more generic * hex-fusion: move tensor fusion tagging to graph_compute * hexagon: make sure to copy tensor->extra by value * hex-get-rows: fix offset calc with row-chunking * hex-repack: get_tensor_2d fixes for non-zero offsets * snapdragon: make profile/trace scripts more robust and donot mix stdout/stderr by default * hex-devices: use legacy device nameing by default to ease the transition * hex-devices: hardcode CDSP domain IDs for current devices for now * hex-optrace: improve multi-NPU timestamp alignment and overall handling of cycle values * hex-optrace: more robust handling of the fence events
6.0 KiB
Snapdragon-based Windows devices
Tool Dependencies
Native Windows 11 arm64 builds have the following tool dependencies:
- MS Visual Studio 2026 (Community Edition or Pro)
- MSVC arm64 standard and runtime libraries
- UCRT and Driver Kit
- LLVM core libraries and Clang compiler (winget)
- CMake, Git, Python (winget)
- Hexagon SDK Community Edition 6.6 or later (see below)
- OpenCL SDK 2.3 or later (see below)
Note: The rest of the Windows build process assumes that you're running natively in Powershell.
Overview
The document covers procedures for installing the latest GPU and NPU drivers, and OpenCL and Hexagon SDKs.
In order to use Hexagon NPU on Snapdragon Windows devices the underlying HTP Ops libraries (e.g libggml-htp-v73.so) must be included in the .cat file digitally signed with a trusted certificate.
This document covers details on how to generate personal certificate files (.pfx) and how to configure the system to allow for test signatures (aka test-signing).
Install the latest Adreno OpenCL SDK
Either use the trimmed down version (optimized for CI) from
https://github.com/snapdragon-toolchain/opencl-sdk/releases/download/v2.3.2/adreno-opencl-sdk-v2.3.2-arm64-wos.tar.xz
Or download the complete official version from
https://softwarecenter.qualcomm.com/catalog/item/Adreno_OpenCL_SDK?version=2.3.2
Unzip/untar the archive into
c:\Qualcomm\OpenCL_SDK\2.3.2
Install the latest Hexagon SDK Community Edition
Either use the trimmed down version (optimized for CI) from
https://github.com/snapdragon-toolchain/hexagon-sdk/releases/download/v6.6.0.0/hexagon-sdk-v6.6.0.0-arm64-wos.tar.xz
Or download the complete official version from
https://softwarecenter.qualcomm.com/catalog/item/Hexagon_SDK?version=6.6.0.0
Unzip/untar the archive into
c:\Qualcomm\Hexagon_SDK\6.6.0.0
Install the latest Adreno GPU driver
Download the driver from
https://softwarecenter.qualcomm.com/catalog/item/Windows_Graphics_Driver
After the automated installation and reboot please make sure that the GPU device shows up in the Device Manager (under 'Display Adapters`)
Install the latest Qualcomm NPU driver
Download the driver from
https://softwarecenter.qualcomm.com/catalog/item/Qualcomm_HND
After the automated installation and reboot please make sure that the Hexagon NPU device shows up in the Device Manager
(under Neural Processors).
If the device is not available you can try installing all components (qcnspmcdm8380, qcnspmcdm8380_ext) manually.
The components are extracted into
c:\QCDrivers\qcnspmcdm...
Enable NPU driver test signatures
Please note that the following steps are required only for the Hexagon NPU. Adreno GPU backend does not require test signatures.
Enable testsigning
Use bcdedit to enable test-signing
> bcdedit /set TESTSIGNING ON
(Secure Boot may need to be disabled for this to work)
Make sure test-signing is enabled after reboot
> bcdedit /enum
...
testsigning Yes
...
For additional details see Microsoft guide at
Create personal certificate
The tools required for this procedure are available as part of Windows SDK and Windows Driver Kit which should be installed as part of the MS Visual Studio. They are typically located at
c:\Program Files (x86)\Windows Kits\10\bin\10.0.26100.0
(replace 10.0.26100.0 with correct version).
To create personal self-signed certificate run the following commands (either from cmd or power-shell):
> cd c:\Users\MyUser
> mkdir Certs
> cd Certs
> makecert -r -pe -ss PrivateCertStore -n CN=GGML.HTP.v1 -eku 1.3.6.1.5.5.7.3.3 -sv ggml-htp-v1.pvk ggml-htp-v1.cer
> pvk2pfx.exe -pvk ggml-htp-v1.pvk -spc ggml-htp-v1.cer -pfx ggml-htp-v1.pfx
(replace MyUser with your username).
Add this certificate to Trusted Root Certification Authorities and Trusted Publishers stores.
This can be done using certlm Certificate Manager tool.
Right click on the certificate store, select All Tasks -> Import and follow the prompts to import the certificate from the
PFX file you created above.
For additional details see Microsoft guide at
https://learn.microsoft.com/en-us/windows-hardware/drivers/install/introduction-to-test-signing
Make sure to save the PFX file, you will need it for the build procedures. Please note that the same certificate can be used for signing any number of builds.
Build Hexagon backend with signed HTP ops libraries
The overall Hexagon backend build procedure for Windows on Snapdragon is the same as for other platforms. However, additional settings are required for generating and signing HTP Ops libraries.
> $env:OPENCL_SDK_ROOT="C:\Qualcomm\OpenCL_SDK\2.3.2"
> $env:HEXAGON_SDK_ROOT="C:\Qualcomm\Hexagon_SDK\6.6.0.0"
> $env:HEXAGON_TOOLS_ROOT="C:\Qualcomm\Hexagon_SDK\6.6.0.0\tools\HEXAGON_Tools\19.0.07"
> $env:HEXAGON_HTP_CERT="c:\Users\MyUsers\Certs\ggml-htp-v1.pfx"
> $env:WINDOWS_SDK_BIN="C:\Program Files (x86)\Windows Kits\10\bin\10.0.26100.0"
> cmake --preset arm64-windows-snapdragon-release -B build-wos
...
> cmake --install build-wos --prefix pkg-wos
Once the build is complete HTP ops libraries will be installed like this
> dir pkg-wos/lib
...
-a---- 1/22/2026 6:01 PM 187656 libggml-htp-v73.so
-a---- 1/22/2026 6:01 PM 191752 libggml-htp-v75.so
-a---- 1/22/2026 6:01 PM 187656 libggml-htp-v79.so
-a---- 1/22/2026 6:01 PM 187656 libggml-htp-v81.so
-a---- 1/22/2026 6:01 PM 4139 libggml-htp.cat
The .cat file, the signature and proper certificate installation can be verified with
> signtool.exe verify /v /pa .\pkg-wos\lib\libggml-htp.cat
Verifying: .\pkg-wos\lib\libggml-htp.cat
Signature Index: 0 (Primary Signature)
Hash of file (sha256): 9820C664DA59D5EAE31DBB664127FCDAEF59CDC31502496BC567544EC2F401CF
Signing Certificate Chain:
Issued to: GGML.HTP.v1
...
Successfully verified: .\pkg-wos\lib\libggml-htp.cat
...