From 7c77cf7380f74ee46dbcc24801d87baa08f30b37 Mon Sep 17 00:00:00 2001
From: ilmaalifia <ilma.mahardika@gmail.com>
Date: Wed, 10 Apr 2019 20:01:38 +0700
Subject: [PATCH] hello again
---
hello.c | 8 --------
hello.cu | 42 ++++++++++++++++++++++++++++++++++++------
2 files changed, 36 insertions(+), 14 deletions(-)
delete mode 100644 hello.c
diff --git a/hello.c b/hello.c
deleted file mode 100644
index 9dcb9de..0000000
--- a/hello.c
+++ /dev/null
@@ -1,8 +0,0 @@
-__global__ void cuda_hello(){
- printf("Hello World from GPU!\n");
-}
-
-int main() {
- cuda_hello<<<1,1>>>();
- return 0;
-}
\ No newline at end of file
diff --git a/hello.cu b/hello.cu
index 9dcb9de..9c7f494 100644
--- a/hello.cu
+++ b/hello.cu
@@ -1,8 +1,38 @@
-__global__ void cuda_hello(){
- printf("Hello World from GPU!\n");
+#include <stdio.h>
+
+const int N = 16;
+const int blocksize = 16;
+
+__global__
+void hello(char *a, int *b)
+{
+ a[threadIdx.x] += b[threadIdx.x];
}
-
-int main() {
- cuda_hello<<<1,1>>>();
- return 0;
+
+int main()
+{
+ char a[N] = "Hello \0\0\0\0\0\0";
+ int b[N] = {15, 10, 6, 0, -11, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+ char *ad;
+ int *bd;
+ const int csize = N*sizeof(char);
+ const int isize = N*sizeof(int);
+
+ printf("%s", a);
+
+ cudaMalloc( (void**)&ad, csize );
+ cudaMalloc( (void**)&bd, isize );
+ cudaMemcpy( ad, a, csize, cudaMemcpyHostToDevice );
+ cudaMemcpy( bd, b, isize, cudaMemcpyHostToDevice );
+
+ dim3 dimBlock( blocksize, 1 );
+ dim3 dimGrid( 1, 1 );
+ hello<<<dimGrid, dimBlock>>>(ad, bd);
+ cudaMemcpy( a, ad, csize, cudaMemcpyDeviceToHost );
+ cudaFree( ad );
+ cudaFree( bd );
+
+ printf("%s\n", a);
+ return EXIT_SUCCESS;
}
\ No newline at end of file
--
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