diff options
Diffstat (limited to 'external/clBLAS/src/samples/example_isamax.c')
-rw-r--r-- | external/clBLAS/src/samples/example_isamax.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/external/clBLAS/src/samples/example_isamax.c b/external/clBLAS/src/samples/example_isamax.c deleted file mode 100644 index 88133619..00000000 --- a/external/clBLAS/src/samples/example_isamax.c +++ /dev/null @@ -1,135 +0,0 @@ -/* ************************************************************************ - * Copyright 2013 Advanced Micro Devices, Inc. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * ************************************************************************/ - -#include <sys/types.h> -#include <stdio.h> -#include <string.h> -#include <math.h> - -/* Include CLBLAS header. It automatically includes needed OpenCL header, - * so we can drop out explicit inclusion of cl.h header. - */ -#include <clBLAS.h> - -/* This example uses predefined matrices and their characteristics for - * simplicity purpose. - */ -static const size_t N = 7; -static cl_float X[] = { - 1, - 2, - -11, - 17, - 5, - 6, - 800, - 10 -}; -static const int incx = 1; -static cl_uint indexMax; - -int -main(void) -{ - cl_int err; - cl_platform_id platform = 0; - cl_device_id device = 0; - cl_context_properties props[3] = { CL_CONTEXT_PLATFORM, 0, 0 }; - cl_context ctx = 0; - cl_command_queue queue = 0; - cl_mem bufX, scratchBuf, iMax; - cl_event event = NULL; - int ret = 0; - int lenX = 1 + (N-1)*abs(incx); - int lenScratchBuf = N; - - /* Setup OpenCL environment. */ - err = clGetPlatformIDs(1, &platform, NULL); - if (err != CL_SUCCESS) { - printf( "clGetPlatformIDs() failed with %d\n", err ); - return 1; - } - - err = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 1, &device, NULL); - if (err != CL_SUCCESS) { - printf( "clGetDeviceIDs() failed with %d\n", err ); - return 1; - } - - props[1] = (cl_context_properties)platform; - ctx = clCreateContext(props, 1, &device, NULL, NULL, &err); - if (err != CL_SUCCESS) { - printf( "clCreateContext() failed with %d\n", err ); - return 1; - } - - queue = clCreateCommandQueue(ctx, device, 0, &err); - if (err != CL_SUCCESS) { - printf( "clCreateCommandQueue() failed with %d\n", err ); - clReleaseContext(ctx); - return 1; - } - - /* Setup clblas. */ - err = clblasSetup(); - if (err != CL_SUCCESS) { - printf("clblasSetup() failed with %d\n", err); - clReleaseCommandQueue(queue); - clReleaseContext(ctx); - return 1; - } - /* Prepare OpenCL memory objects and place matrices inside them. */ - bufX = clCreateBuffer(ctx, CL_MEM_READ_ONLY, (lenX*sizeof(cl_float)), NULL, &err); - - // Allocate minimum of (N/64) elements. But here allocating N elements for the sake of simplicity - scratchBuf = clCreateBuffer(ctx, CL_MEM_READ_WRITE, (lenScratchBuf*sizeof(cl_float) * 2), NULL, &err); - - // Buffer to return the index of max absolute value in X - iMax = clCreateBuffer(ctx, CL_MEM_WRITE_ONLY, sizeof(cl_uint), NULL, &err); - - err = clEnqueueWriteBuffer(queue, bufX, CL_TRUE, 0, (lenX*sizeof(cl_float)) , X, 0, NULL, NULL); - - /* Call clblas function. */ - err = clblasiSamax( N, iMax, 0, bufX, 0, incx, scratchBuf, - 1, &queue, 0, NULL, &event); - if (err != CL_SUCCESS) { - printf("clblasiSamax() failed with %d\n", err); - ret = 1; - } - else { - /* Wait for calculations to be finished. */ - err = clWaitForEvents(1, &event); - - /* Fetch results of calculations from GPU memory. */ - err = clEnqueueReadBuffer(queue, iMax, CL_TRUE, 0, sizeof(cl_uint), - &indexMax, 0, NULL, NULL); - printf("Result amax: %d\n", indexMax); - } - - /* Release OpenCL memory objects. */ - clReleaseMemObject(bufX); - clReleaseMemObject(scratchBuf); - clReleaseMemObject(iMax); - - /* Finalize work with clblas. */ - clblasTeardown(); - - /* Release OpenCL working objects. */ - clReleaseCommandQueue(queue); - clReleaseContext(ctx); - - return ret; -} |