X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/book_gpu.git/blobdiff_plain/588a7d5fe41e4604140b24fbe1bdec5e4a32febd..8fc4c8914177b38f8042870c31065ea619b900ec:/BookGPU/Chapters/chapter2/ex1.cu

diff --git a/BookGPU/Chapters/chapter2/ex1.cu b/BookGPU/Chapters/chapter2/ex1.cu
index e182349..64c08dd 100644
--- a/BookGPU/Chapters/chapter2/ex1.cu
+++ b/BookGPU/Chapters/chapter2/ex1.cu
@@ -18,16 +18,12 @@ void addition(int size, int *d_C, int *d_A, int *d_B) {
 
 int main( int argc, char** argv) 
 {
-
 	if(argc!=2) { 
 		printf("usage: ex1 nb_components\n");
 		exit(0);
 	}
 
-	
-
 	int size=atoi(argv[1]);
-
 	int i;
 	int *h_arrayA=(int*)malloc(size*sizeof(int));
 	int *h_arrayB=(int*)malloc(size*sizeof(int));
@@ -35,7 +31,6 @@ int main( int argc, char** argv)
 	int *h_arrayCgpu=(int*)malloc(size*sizeof(int));
 	int *d_arrayA, *d_arrayB, *d_arrayC;
 
-
 	cudaMalloc((void**)&d_arrayA,size*sizeof(int));
 	cudaMalloc((void**)&d_arrayB,size*sizeof(int));
 	cudaMalloc((void**)&d_arrayC,size*sizeof(int));
@@ -45,10 +40,9 @@ int main( int argc, char** argv)
 		h_arrayB[i]=2*i;
 	}
 
-
 	unsigned int timer_cpu = 0;
 	cutilCheckError(cutCreateTimer(&timer_cpu));
-  cutilCheckError(cutStartTimer(timer_cpu));
+	cutilCheckError(cutStartTimer(timer_cpu));
 	for(i=0;i<size;i++) {
 		h_arrayC[i]=h_arrayA[i]+h_arrayB[i];
 	}
@@ -56,37 +50,28 @@ int main( int argc, char** argv)
 	printf("CPU processing time : %f (ms) \n", cutGetTimerValue(timer_cpu));
 	cutDeleteTimer(timer_cpu);
 
-
 	unsigned int timer_gpu = 0;
 	cutilCheckError(cutCreateTimer(&timer_gpu));
-  cutilCheckError(cutStartTimer(timer_gpu));
+	cutilCheckError(cutStartTimer(timer_gpu));
 	cudaMemcpy(d_arrayA,h_arrayA, size * sizeof(int), cudaMemcpyHostToDevice);
 	cudaMemcpy(d_arrayB,h_arrayB, size * sizeof(int), cudaMemcpyHostToDevice);
-
-	
-
 	
 	int nbBlocs=(size+nbThreadsPerBloc-1)/nbThreadsPerBloc;
-
 	addition<<<nbBlocs,nbThreadsPerBloc>>>(size,d_arrayC,d_arrayA,d_arrayB);
-
 	cudaMemcpy(h_arrayCgpu,d_arrayC, size * sizeof(int), cudaMemcpyDeviceToHost);
 
 	cutilCheckError(cutStopTimer(timer_gpu));
 	printf("GPU processing time : %f (ms) \n", cutGetTimerValue(timer_gpu));
 	cutDeleteTimer(timer_gpu);
 
-	for(i=0;i<size;i++)
+	for(i=0;i<size;i++) {
 		assert(h_arrayC[i]==h_arrayCgpu[i]);
-
+	}
 	cudaFree(d_arrayA);
 	cudaFree(d_arrayB);
 	cudaFree(d_arrayC);
 	free(h_arrayA);
 	free(h_arrayB);
 	free(h_arrayC);
-
-
 	return 0;
-
 }