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Add mmq device table for RDNA3.5 #25

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Add mmq device table for RDNA3.5 #25

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e109b83
Add mmq device table for RDNA3.5
Jun 17, 2026
a18e333
Merge branch 'gfx11' into annier.mmq-device-table
jimw567 Jun 17, 2026
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14 changes: 12 additions & 2 deletions ggml/src/ggml-cuda/mmq.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,9 @@ static constexpr __device__ int get_mmq_x_max_device() {
}

static int get_mmq_y_host(const int cc) {
if (GGML_CUDA_CC_IS_RDNA3_5(cc)) {
return 64;
}
return GGML_CUDA_CC_IS_AMD(cc) ? (GGML_CUDA_CC_IS_RDNA1(cc) ? 64 : 128) :
((GGML_CUDA_CC_IS_NVIDIA(cc) && ggml_cuda_highest_compiled_arch(cc) >= GGML_CUDA_CC_VOLTA) ? 128 : 64);
}
Expand All @@ -155,7 +158,9 @@ if (type == GGML_TYPE_NVFP4 || type == GGML_TYPE_MXFP4) {

static constexpr __device__ int get_mmq_y_device() {
#if defined(GGML_USE_HIP)
#if defined(RDNA1)
#if defined(RDNA3_5)
return 64;
#elif defined(RDNA1)
return 64;
#else
return 128;
Expand Down Expand Up @@ -296,6 +301,9 @@ static constexpr __device__ int mmq_get_granularity_device(const int /*mmq_x*/)

#if defined(GGML_USE_HIP)
static int mmq_get_nwarps_host(const int cc, const int warp_size) {
if (GGML_CUDA_CC_IS_RDNA3_5(cc)) {
return 4;
}
return amd_mfma_available(cc) ? 8 : 256/warp_size;
}
#else
Expand All @@ -305,7 +313,9 @@ static int mmq_get_nwarps_host(const int /*cc*/, const int warp_size) {
#endif // (GGML_USE_HIP)

static constexpr __device__ int mmq_get_nwarps_device() {
#if defined(AMD_MFMA_AVAILABLE) || defined(AMD_WMMA_AVAILABLE)
#if defined(RDNA3_5)
return 4;
#elif defined(AMD_MFMA_AVAILABLE) || defined(AMD_WMMA_AVAILABLE)
return 8;
#else
return 256/ggml_cuda_get_physical_warp_size();
Expand Down
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