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cuda : add set rows for bf16 (#14664)

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Sigbjørn Skjæret
2025-07-13 15:01:24 +02:00
committed by GitHub
parent e743cddb60
commit 923e3ea2e3
2 changed files with 17 additions and 2 deletions
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4
ggml/src/ggml-cuda/ggml-cuda.cu
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@@ -3226,8 +3226,8 @@ static bool ggml_backend_cuda_device_supports_op(ggml_backend_dev_t dev, const g
} break;
case GGML_OP_SET_ROWS:
{
#pragma message("TODO: implement BF16, Q4_0, Q4_1, Q5_0, Q5_1, Q8_0, IQ4_NL support (https://github.com/ggml-org/llama.cpp/pull/14661)")
return (op->type == GGML_TYPE_F32 || op->type == GGML_TYPE_F16) &&
#pragma message("TODO: implement Q4_0, Q4_1, Q5_0, Q5_1, Q8_0, IQ4_NL support (https://github.com/ggml-org/llama.cpp/pull/14661)")
return (op->type == GGML_TYPE_F32 || op->type == GGML_TYPE_F16 || op->type == GGML_TYPE_BF16) &&
op->src[0]->type == GGML_TYPE_F32 &&
op->src[1]->type == GGML_TYPE_I64;
} break;

15
ggml/src/ggml-cuda/set-rows.cu
View File

@@ -10,6 +10,11 @@ __device__ __forceinline__ void set_rows_1<float, half>(const float * src_f, hal
*dst_h = __float2half(*src_f);
}
template<>
__device__ __forceinline__ void set_rows_1<float, nv_bfloat16>(const float * src_f, nv_bfloat16 * dst_b) {
*dst_b = *src_f;
}
template<>
__device__ __forceinline__ void set_rows_1<float, float>(const float * src_f, float * dst_f) {
*dst_f = *src_f;
@@ -124,6 +129,16 @@ void ggml_cuda_op_set_rows(ggml_backend_cuda_context & ctx, ggml_tensor * dst) {
nb1, nb2, nb3,
stream
);
} else if (dst->type == GGML_TYPE_BF16) {
set_rows_cuda(
src0_d, src1_d, (nv_bfloat16*)dst->data,
ne00, ne01, ne02, ne03,
ne10, ne11, ne12, ne13,
nb01, nb02, nb03,
nb10, nb11, nb12,
nb1, nb2, nb3,
stream
);
} else {
GGML_ABORT("unsupported type");
}