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llama.cpp
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Only apply subgroup size change to M size kernels

This commit is contained in:
Nakasaka, Masato 2026-01-19 21:46:35 -08:00
parent 7e05215f9a
commit fe8a3db76a
1 changed files with 2 additions and 4 deletions
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6
ggml/src/ggml-vulkan/ggml-vulkan.cpp
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@ -2889,7 +2889,7 @@ static constexpr uint32_t RDNA_DEFAULT_SUBGROUP_SIZE = 32;
static std::vector<uint32_t> calc_specialization_constant_intel_xe2_onward(const PipelineConfigParameter& config, const std::vector<uint32_t>& current) {
std::vector<uint32_t> output = current;
// replacing subgroup_size_8 with new value for l_warptile_mmq and m_warptile_mmq
// replacing subgroup_size_8 with current subgroup size for m_warptile_mmq
output[4] = config.subgroup_size;
output[10] = config.subgroup_size;
return output;
@ -2897,14 +2897,12 @@ static std::vector<uint32_t> calc_specialization_constant_intel_xe2_onward(const
static const std::unordered_map<std::string, PipelineConfigParameter> xe2_onward_pipelines = {
{"matmul_id_subgroup_q4_k_f32_f16acc_aligned_m", {16, {}, calc_specialization_constant_intel_xe2_onward}},
{"matmul_id_subgroup_q4_k_f32_f16acc_aligned_l", {16, {}, calc_specialization_constant_intel_xe2_onward}},
{"matmul_id_subgroup_q6_k_f32_f16acc_aligned_m", {16, {}, calc_specialization_constant_intel_xe2_onward}},
{"matmul_id_subgroup_q6_k_f32_f16acc_aligned_l", {16, {}, calc_specialization_constant_intel_xe2_onward}},
};
// Intel GPU can use subgroup 8, 16, or 32 depending on architeture.
// Pre-Xe2 is 8, 16, or 32. Xe2 onward is 16 or 32. 32 is the default if nothing is specified.
static constexpr uint32_t INTEL_DEFAULT_SUBGROUP_SIZE = 16;
static constexpr uint32_t INTEL_DEFAULT_SUBGROUP_SIZE = 32;
// Define configurations for different GPUs.
static std::vector<GpuPipelineConfig> gpu_pipeline_configs = {