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sycl : Add DMMV ESIMD Q3_K kernel (#26251)

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* Add DMMV Q4_K and Q6_K ESIMD kernels

Configure cmake build with -DGGML_SYCL_ESIMD=ON to enable.

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

* Refactor ESIMD kernels to share common code

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

* Move control of ESIMD from compile to runtime

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

* Use ESIMD by default when available

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

* Fix possible error when using ESIMD by default

While not an issue in the current version, this will become an
issue when additional QK ESIMD kernels are added (such as Q2_K).

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

* Add explicit unroll to ESIMD kernels

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

* Tidy up ESIMD kernels a bit

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

* Add DMMV Q3_K ESIMD kernel

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>

---------

Signed-off-by: Todd Malsbary <todd.malsbary@intel.com>
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Todd Malsbary 2026-08-13 01:32:36 -07:00 • committed by GitHub
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docs/backend/SYCL.md
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@ -804,6 +804,7 @@ User can use the device management in [docs/multi-gpu.md](https://github.com/ggm
| GGML_SYCL_MKL_FA_DEBUG | 0 (default) or 1 | Enable per-call diagnostic logging for MKL flash attention: GEMM/softmax timings, interleaved-head detection, and buffer memory usage. |
| GGML_SYCL_MKL_FA_DIAG | 0 (default) or 1 | Enable output fingerprinting for MKL flash attention. Dumps the first 64 float output values for the first 6 FA calls with n_kv ≥ 1024, labeled with kernel type (MKL/TILE/VEC) for cross-kernel comparison. |
| GGML_SYCL_ENABLE_FUSION | 0 or 1 (default) | Enable fused-kernel dispatch in graph compute (currently top-k MoE gating). |
| GGML_SYCL_ENABLE_ESIMD | 0 or 1 (default)| Enable ESIMD kernels when available. |
| ZES_ENABLE_SYSMAN | 0 (default) or 1 | Support to get free memory of GPU by sycl::aspect::ext_intel_free_memory.<br>Recommended to use when --split-mode = layer |
| UR_L0_ENABLE_RELAXED_ALLOCATION_LIMITS | 0 (default) or 1 | Allow SYCL/Unified Runtime Level Zero device allocations larger than 4 GiB. llama.cpp's direct Level Zero allocation path requests the relaxed maximum-size limit itself when GGML_SYCL_ENABLE_LEVEL_ZERO=1. |
| GGML_SYCL_USM_SYSTEM | 0 (default) or 1 | Enable experimental support for [USM system allocations](https://github.khronos.org/SYCL_Reference/iface/usm_basic_concept.html#system-allocations) for large GPU buffers. This requires enough host memory for model weights and caches, an Intel Xe2+ GPU such as BMG or newer and supported on Linux only, with CONFIG_DRM_XE_GPUSVM enabled. |