Lecture 2 – Threads - many-core.group

GPU strategy 1 – kernel launch code
// set thread blocks and grid
grid_dim=dim3(DIVIDE_INTO(ni,NI_TILE),DIVIDE_INTO(nj,NJ_TILE),1);
block_dim=dim3(NI_TILE, NJ_TILE, 1);
// launch kernel
step_kernel_gpu(ni, nj,tfac,temp1_d,
temp2_d);
// swap the temp pointers
temp_tmp = temp1_d;
temp1_d = temp2_d;
temp2_d = temp_tmp;