From 26c490f404731d053a6205719b6246502c07b449 Mon Sep 17 00:00:00 2001 From: Patrick Simianer
Date: Sat, 14 Jun 2014 16:46:27 +0200
Subject: init
---
ccc/vector_addition1.cu | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 ccc/vector_addition1.cu
(limited to 'ccc/vector_addition1.cu')
diff --git a/ccc/vector_addition1.cu b/ccc/vector_addition1.cu
new file mode 100644
index 0000000..9490ff3
--- /dev/null
+++ b/ccc/vector_addition1.cu
@@ -0,0 +1,48 @@
+#include "stdio.h"
+
+
+__global__ void add_arrays_gpu( float *in1, float *in2, float *out, int Ntot)
+{
+ int idx=blockIdx.x*blockDim.x+threadIdx.x;
+ if (idx < Ntot)
+ out[idx]=in1[idx]+in2[idx];
+}
+
+
+int main(void)
+{
+ int N=10000, M=100000;
+ float **x = (float**) malloc(N*sizeof(float));
+ float **x_d = (float**) malloc(N*sizeof(float));
+ int i,j;
+
+ for (i = 0; i < N; i++) {
+ x[i] = (float*) malloc(M*sizeof(float));
+ cudaMalloc ((void **) &x_d[i], sizeof(float)*M);
+ for (j = 0; j < M; j++) {
+ x[i][j] = (float) j;
+ }
+ cudaMemcpy(x_d[i], x[i], sizeof(float)*M, cudaMemcpyHostToDevice);
+ }
+
+
+ /* Compute the execution configuration */
+// int block_size=256;
+ // dim3 dimBlock(block_size);
+ //dim3 dimGrid ( (N/dimBlock.x) + (!(N%dimBlock.x)?0:1) );
+
+ /** Add arrays a and b, store result in c */
+ // add_arrays_gpu<<