58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
|
// RUN: %libomptarget-compileopt-run-and-check-generic
|
||
|
|
//
|
||
|
|
// UNSUPPORTED: x86_64-pc-linux-gnu
|
||
|
|
// UNSUPPORTED: x86_64-pc-linux-gnu-LTO
|
||
|
|
// UNSUPPORTED: aarch64-unknown-linux-gnu
|
||
|
|
// UNSUPPORTED: aarch64-unknown-linux-gnu-LTO
|
||
|
|
|
||
|
|
#include <math.h>
|
||
|
|
#include <omp.h>
|
||
|
|
#include <ompx.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
int main(int argc, char **argv) {
|
||
|
|
int N = 1 << 29;
|
||
|
|
if (argc > 1)
|
||
|
|
N = atoi(argv[1]);
|
||
|
|
float a = 2.f;
|
||
|
|
|
||
|
|
float *X = (float *)malloc(sizeof(*X) * N);
|
||
|
|
float *Y = (float *)malloc(sizeof(*X) * N);
|
||
|
|
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
X[i] = 1.0f;
|
||
|
|
Y[i] = 2.0f;
|
||
|
|
}
|
||
|
|
|
||
|
|
int TL = 256;
|
||
|
|
int NT = (N + TL - 1) / TL;
|
||
|
|
|
||
|
|
#pragma omp target data map(to : X [0:N]) map(Y [0:N])
|
||
|
|
#pragma omp target teams num_teams(NT) thread_limit(TL)
|
||
|
|
{
|
||
|
|
#pragma omp parallel
|
||
|
|
{
|
||
|
|
int tid = ompx_thread_id_x();
|
||
|
|
int bid = ompx_block_id_x();
|
||
|
|
int tdim = ompx_block_dim_x();
|
||
|
|
int gid = tid + bid * tdim;
|
||
|
|
if (gid < N)
|
||
|
|
Y[gid] = a * X[gid] + Y[gid];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
float maxError = 0.0f;
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
maxError = fmax(maxError, fabs(Y[i] - 4.0f));
|
||
|
|
if (maxError) {
|
||
|
|
printf("%i %f %f\n", i, maxError, Y[i]);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// CHECK: Max error: 0.00
|
||
|
|
printf("Max error: %f\n", maxError);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|