/* Hello Cuda example */
/* Intro to GPU tutorial */
/* SCV group */

#include <stdio.h>
#define NUM_BLOCKS 4
#define BLOCK_WIDTH 8


/* Function executed on device (GPU */
__global__ void hello( void) {
  printf("\tHello from GPU: thread %d and block %d\n", threadIdx.x, blockIdx.x);

} 

/* Main function, executed on host (CPU) */
int main( void) {

  /* print message from CPU */
  printf( "Hello Cuda!\n" );

  /* execute function on device */
  hello<<<NUM_BLOCKS, BLOCK_WIDTH>>>();

  /* wait until all threads finish their job */
  cudaDeviceSynchronize();

  /* print message from CPU */
  printf( "Welcome back to CPU!\n" );

  return (0);
}