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q5_0 dequantize_mul_mat kernel

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JohannesGaessler 2023-05-12 23:57:10 +02:00
parent 0986c2f44e
commit 9da44fdcb3
1 changed files with 25 additions and 0 deletions
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ggml-cuda.cu
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@ -106,6 +106,24 @@ static __device__ void dequantize_q4_1(const void * vx, const int ib, const int
v1 = vi1*d + m;
}
static __device__ void dequantize_q5_0(const void * vx, const int ib, const int iqs, float & v0, float & v1){
const block_q5_0 * x = (const block_q5_0 *) vx;
const float d = x[ib].d;
uint32_t qh;
memcpy(&qh, x[ib].qh, sizeof(qh));
const uint8_t xh_0 = ((qh >> (iqs + 0)) << 4) & 0x10;
const uint8_t xh_1 = ((qh >> (iqs + 12)) ) & 0x10;
const int32_t x0 = ((x[ib].qs[iqs] & 0xf) | xh_0) - 16;
const int32_t x1 = ((x[ib].qs[iqs] >> 4) | xh_1) - 16;
v0 = x0*d;
v1 = x1*d;
}
static __global__ void dequantize_block_q4_0(const void * vx, float * y) {
static const int qk = QK4_0;
@ -277,6 +295,11 @@ static void dequantize_mul_mat_vec_q4_1_cuda(const void * vx, const float * y, f
dequantize_mul_mat_vec<CUDA_DMMV_BLOCK_SIZE, QK4_1, dequantize_q4_1><<<nrows, CUDA_DMMV_BLOCK_SIZE, 0, stream>>>(vx, y, dst, ncols);
}
static void dequantize_mul_mat_vec_q5_0_cuda(const void * vx, const float * y, float * dst, const int ncols, const int nrows, cudaStream_t stream) {
GGML_ASSERT(ncols % CUDA_DMMV_BLOCK_SIZE == 0);
dequantize_mul_mat_vec<CUDA_DMMV_BLOCK_SIZE, QK5_0, dequantize_q5_0><<<nrows, CUDA_DMMV_BLOCK_SIZE, 0, stream>>>(vx, y, dst, ncols);
}
// TODO: optimize
static __global__ void convert_fp16_to_fp32(const void * vx, float * y) {
const half * x = (const half *) vx;
@ -315,6 +338,8 @@ static dequantize_mul_mat_vec_cuda_t ggml_get_dequantize_mul_mat_vec_cuda(ggml_t
return dequantize_mul_mat_vec_q4_0_cuda;
case GGML_TYPE_Q4_1:
return dequantize_mul_mat_vec_q4_1_cuda;
case GGML_TYPE_Q5_0:
return dequantize_mul_mat_vec_q5_0_cuda;
default:
return nullptr;
}