8823448807
Many tests in the `offload` project have requirements defined by which targets are not supported rather than which platforms are supported. This patch aims to streamline the requirement definitions by adding four new feature tags: `host`, `gpu`, `amdgpu`, and `nvidiagpu`.
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
// RUN: %libomptarget-compileopt-run-and-check-generic
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//
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// REQUIRES: gpu
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#include <math.h>
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#include <omp.h>
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#include <ompx.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char **argv) {
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int N = 1 << 29;
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if (argc > 1)
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N = atoi(argv[1]);
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float a = 2.f;
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float *X = (float *)malloc(sizeof(*X) * N);
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float *Y = (float *)malloc(sizeof(*X) * N);
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for (int i = 0; i < N; i++) {
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X[i] = 1.0f;
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Y[i] = 2.0f;
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}
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int TL = 256;
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int NT = (N + TL - 1) / TL;
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#pragma omp target data map(to : X [0:N]) map(Y [0:N])
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#pragma omp target teams num_teams(NT) thread_limit(TL)
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{
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#pragma omp parallel
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{
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int tid = ompx_thread_id_x();
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int bid = ompx_block_id_x();
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int tdim = ompx_block_dim_x();
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int gid = tid + bid * tdim;
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if (gid < N)
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Y[gid] = a * X[gid] + Y[gid];
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}
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}
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float maxError = 0.0f;
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for (int i = 0; i < N; i++) {
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maxError = fmax(maxError, fabs(Y[i] - 4.0f));
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if (maxError) {
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printf("%i %f %f\n", i, maxError, Y[i]);
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break;
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}
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}
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// CHECK: Max error: 0.00
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printf("Max error: %f\n", maxError);
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return 0;
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}
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