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| #include <stdio.h>
| #include <stdlib.h>
| #include <string.h>
| #include <time.h>
| #include <math.h>
|
| #include "opencl.h"
| #include "mini_blas.h"
|
| #define STR_HELPER(x) #x
| #define STR(x) STR_HELPER(x)
|
| #define BLOCK 8
|
| cl_kernel get_gemm_kernel()
| {
| static int init = 0;
| static cl_kernel gemm_kernel;
| if(!init){
| gemm_kernel = get_kernel("src/gemm.cl", "gemm", "-D BLOCK=" STR(BLOCK) );
| init = 1;
| }
| return gemm_kernel;
| }
|
| void gpu_gemm(int TA, int TB, int M, int N, int K, float ALPHA,
| float *A, int lda,
| float *B, int ldb,
| float BETA,
| float *C, int ldc)
| {
| cl_setup();
| cl_kernel gemm_kernel = get_gemm_kernel();
| cl_context context = cl.context;
| cl_command_queue queue = cl.queue;
|
| size_t size = sizeof(float)*(TA ? lda*K:lda*M);
| cl_mem A_gpu = clCreateBuffer(context,
| CL_MEM_READ_ONLY|CL_MEM_COPY_HOST_PTR,
| size, A, &cl.error);
| check_error(cl);
|
| size = sizeof(float)*(TB ? ldb*N:ldb*K);
| cl_mem B_gpu = clCreateBuffer(context,
| CL_MEM_READ_ONLY|CL_MEM_COPY_HOST_PTR,
| size, B, &cl.error);
| check_error(cl);
|
| size = sizeof(float)*(ldc*M);
| cl_mem C_gpu = clCreateBuffer(context,
| CL_MEM_WRITE_ONLY|CL_MEM_COPY_HOST_PTR,
| size, C, &cl.error);
| check_error(cl);
|
| cl_uint i = 0;
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(TA), (void*) &TA);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(TB), (void*) &TB);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(M), (void*) &M);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(N), (void*) &N);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(K), (void*) &K);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(ALPHA), (void*) &ALPHA);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(A_gpu), (void*) &A_gpu);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(lda), (void*) &lda);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(B_gpu), (void*) &B_gpu);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(ldb), (void*) &ldb);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(BETA), (void*) &BETA);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(C_gpu), (void*) &C_gpu);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(ldc), (void*) &ldc);
| check_error(cl);
|
| const size_t global_size[] = {ceil((float)M/BLOCK)*BLOCK, ceil((float)N/BLOCK)*BLOCK};
| const size_t local_size[] = {BLOCK, BLOCK};
| //printf("%zd %zd %zd %zd\n", global_size[0], global_size[1], local_size[0], local_size[1]);
|
| clEnqueueNDRangeKernel(queue, gemm_kernel, 2, 0, global_size, local_size, 0, 0, 0);
| check_error(cl);
| clEnqueueReadBuffer(queue, C_gpu, CL_TRUE, 0, size, C, 0, 0, 0);
| check_error(cl);
|
| clReleaseMemObject(A_gpu);
| clReleaseMemObject(B_gpu);
| clReleaseMemObject(C_gpu);
|
| }
|
| /*
| cl_kernel get_gemm_kernel_slow()
| {
| static int init = 0;
| static cl_kernel gemm_kernel;
| if(!init){
| gemm_kernel = get_kernel("src/gemm.cl", "gemm_slow");
| init = 1;
| }
| return gemm_kernel;
| }
|
| void gpu_gemm_slow(int TA, int TB, int M, int N, int K, float ALPHA,
| float *A, int lda,
| float *B, int ldb,
| float BETA,
| float *C, int ldc)
| {
| cl_setup();
| cl_kernel gemm_kernel = get_gemm_kernel_slow();
| cl_context context = cl.context;
| cl_command_queue queue = cl.queue;
|
| size_t size = sizeof(float)*(TA ? lda*K:lda*M);
| cl_mem A_gpu = clCreateBuffer(context,
| CL_MEM_READ_ONLY|CL_MEM_COPY_HOST_PTR,
| size, A, &cl.error);
| check_error(cl);
|
| size = sizeof(float)*(TB ? ldb*N:ldb*K);
| cl_mem B_gpu = clCreateBuffer(context,
| CL_MEM_READ_ONLY|CL_MEM_COPY_HOST_PTR,
| size, B, &cl.error);
| check_error(cl);
|
| size = sizeof(float)*(ldc*M);
| cl_mem C_gpu = clCreateBuffer(context,
| CL_MEM_READ_ONLY|CL_MEM_COPY_HOST_PTR,
| size, C, &cl.error);
| check_error(cl);
|
| cl_uint i = 0;
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(TA), (void*) &TA);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(TB), (void*) &TB);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(M), (void*) &M);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(N), (void*) &N);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(K), (void*) &K);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(ALPHA), (void*) &ALPHA);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(A_gpu), (void*) &A_gpu);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(lda), (void*) &lda);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(B_gpu), (void*) &B_gpu);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(ldb), (void*) &ldb);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(BETA), (void*) &BETA);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(C_gpu), (void*) &C_gpu);
| cl.error = clSetKernelArg(gemm_kernel, i++, sizeof(ldc), (void*) &ldc);
| check_error(cl);
|
| const size_t global_size[] = {M, N};
|
| clEnqueueNDRangeKernel(queue, gemm_kernel, 2, 0, global_size, 0, 0, 0, 0);
| clEnqueueReadBuffer(queue, C_gpu, CL_TRUE, 0, size, C, 0, 0, 0);
|
| clReleaseMemObject(A_gpu);
| clReleaseMemObject(B_gpu);
| clReleaseMemObject(C_gpu);
|
| }
| */
|
|
