| | |
| | | #ifdef GPU |
| | | #include "opencl.h" |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | |
| | | { |
| | | if (info.error != CL_SUCCESS) { |
| | | printf("\n Error number %d", info.error); |
| | | exit(1); |
| | | } |
| | | } |
| | | |
| | |
| | | if(num_devices > MAX_DEVICES) num_devices = MAX_DEVICES; |
| | | int index = getpid()%num_devices; |
| | | printf("%d rand, %d devices, %d index\n", getpid(), num_devices, index); |
| | | info.device = devices[index]; |
| | | //info.device = devices[index]; |
| | | info.device = devices[1]; |
| | | fprintf(stderr, "Found %d device(s)\n", num_devices); |
| | | check_error(info); |
| | | |
| | |
| | | clGetProgramBuildInfo( prog, info.device, CL_PROGRAM_BUILD_LOG, 4096, build_c, 0); |
| | | fprintf(stderr, "Build Log for %s program:\n%s\n", filename, build_c); |
| | | } |
| | | check_error(info); |
| | | return prog; |
| | | } |
| | | |
| | |
| | | return kernel; |
| | | } |
| | | |
| | | void cl_read_array(cl_mem mem, float *x, int n) |
| | | { |
| | | cl_setup(); |
| | | clEnqueueReadBuffer(cl.queue, mem, CL_TRUE, 0, sizeof(float)*n,x,0,0,0); |
| | | check_error(cl); |
| | | } |
| | | |
| | | void cl_write_array(cl_mem mem, float *x, int n) |
| | | { |
| | | cl_setup(); |
| | | clEnqueueWriteBuffer(cl.queue, mem, CL_TRUE, 0,sizeof(float)*n,x,0,0,0); |
| | | check_error(cl); |
| | | } |
| | | |
| | | void cl_copy_array(cl_mem src, cl_mem dst, int n) |
| | | { |
| | | cl_setup(); |
| | | clEnqueueCopyBuffer(cl.queue, src, dst, 0, 0, sizeof(float)*n,0,0,0); |
| | | check_error(cl); |
| | | } |
| | | |
| | | cl_mem cl_sub_array(cl_mem src, int offset, int size) |
| | | { |
| | | cl_buffer_region r; |
| | | r.origin = offset*sizeof(float); |
| | | r.size = size*sizeof(float); |
| | | cl_mem sub = clCreateSubBuffer(src, CL_MEM_USE_HOST_PTR, CL_BUFFER_CREATE_TYPE_REGION, &r, 0); |
| | | return sub; |
| | | } |
| | | |
| | | cl_mem cl_make_array(float *x, int n) |
| | | { |
| | | cl_setup(); |
| | | cl_mem mem = clCreateBuffer(cl.context, |
| | | CL_MEM_READ_WRITE|CL_MEM_COPY_HOST_PTR, |
| | | sizeof(float)*n, x, &cl.error); |
| | | check_error(cl); |
| | | return mem; |
| | | } |
| | | |
| | | #endif |