Go to the documentation of this file.00001 #ifndef CUDA_UTILS_H
00002 #define CUDA_UTILS_H
00003
00004 #include <cstdlib>
00005 #include <cstdio>
00006 #include <string.h>
00007 #include <vector>
00008
00009 #include "cuda_common.h"
00010
00011 #define CUDA_CHECK_ERROR_BASE() CUDA_CHECK_ERROR("")
00012
00013 #ifdef dDebug
00014
00015 #define CUDA_CHECK_ERROR(errorMessage) \
00016 do \
00017 { \
00018 cudaError_t err = cudaGetLastError(); \
00019 if(err != cudaSuccess) \
00020 { \
00021 fprintf(stderr,"Cuda error: %s in file '%s' in line %i : %s.\n", \
00022 errorMessage, __FILE__, __LINE__, cudaGetErrorString( err)); \
00023 fprintf(stderr,"Press ENTER key to terminate the program\n"); \
00024 getchar(); \
00025 exit(EXIT_FAILURE); \
00026 } \
00027 err = cudaThreadSynchronize(); \
00028 if(err != cudaSuccess) \
00029 { \
00030 fprintf(stderr,"Cuda error: %s in file '%s' in line %i : %s.\n", \
00031 errorMessage, __FILE__, __LINE__, cudaGetErrorString( err)); \
00032 fprintf(stderr,"Press ENTER key to terminate the program\n"); \
00033 getchar(); \
00034 exit(EXIT_FAILURE); \
00035 } \
00036 } \
00037 while(0)
00038
00039
00040 #define CUDA_SAFE_CALL_NO_SYNC(call) \
00041 do \
00042 { \
00043 cudaError err = call; \
00044 if(err != cudaSuccess) \
00045 { \
00046 fprintf(stderr, "Cuda error in file '%s' in line %i : %s.\n", \
00047 __FILE__, __LINE__, cudaGetErrorString( err) ); \
00048 fprintf(stderr,"Press ENTER key to terminate the program\n"); \
00049 getchar(); \
00050 exit(EXIT_FAILURE); \
00051 } \
00052 } \
00053 while(0)
00054
00055
00056 #define CUDA_SAFE_CALL(call) \
00057 do \
00058 { \
00059 CUDA_SAFE_CALL_NO_SYNC(call); \
00060 cudaError err = cudaThreadSynchronize(); \
00061 if(err != cudaSuccess) \
00062 { \
00063 fprintf(stderr,"Cuda errorSync in file '%s' in line %i : %s.\n", \
00064 __FILE__, __LINE__, cudaGetErrorString( err) ); \
00065 fprintf(stderr,"Press ENTER key to terminate the program\n"); \
00066 getchar(); \
00067 exit(EXIT_FAILURE); \
00068 } \
00069 } while (0)
00070
00071 #define CUDA_SAFE_CALL(call) \
00072 do \
00073 { \
00074 CUDA_SAFE_CALL_NO_SYNC(call); \
00075 cudaError err = cudaThreadSynchronize(); \
00076 if(err != cudaSuccess) \
00077 { \
00078 fprintf(stderr,"Cuda errorSync in file '%s' in line %i : %s.\n", \
00079 __FILE__, __LINE__, cudaGetErrorString( err) ); \
00080 fprintf(stderr,"Press ENTER key to terminate the program\n"); \
00081 getchar(); \
00082 exit(EXIT_FAILURE); \
00083 } \
00084 } while (0)
00085
00086 #else // not DEBUG
00087
00088 #define CUDA_CHECK_ERROR(errorMessage)
00089 #define CUDA_SAFE_CALL_NO_SYNC(call) call
00090 #define CUDA_SAFE_CALL(call) call
00091
00092 #endif
00093
00094 inline void cudaDeviceInit(int dev = 0)
00095 {
00096 int deviceCount;
00097 CUDA_SAFE_CALL_NO_SYNC(cudaGetDeviceCount(&deviceCount));
00098 if (deviceCount == 0) {
00099 fprintf(stderr, "CUTIL CUDA error: no devices supporting CUDA.\n");
00100 exit(-1);
00101 }
00102 if (dev < 0) dev = 0;
00103 if (dev > deviceCount-1) dev = deviceCount - 1;
00104 cudaDeviceProp deviceProp;
00105 CUDA_SAFE_CALL_NO_SYNC(cudaGetDeviceProperties(&deviceProp, dev));
00106 if (deviceProp.major < 1) {
00107 fprintf(stderr, "cutil error: GPU device does not support CUDA.\n");
00108 exit(-1);
00109 }
00110 CUDA_SAFE_CALL(cudaSetDevice(dev));
00111 }
00112
00113 #endif