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// RUN: %libomptarget-compile-run-and-check-generic
// XFAIL: nvptx64-nvidia-cuda
// XFAIL: nvptx64-nvidia-cuda-oldDriver
// XFAIL: nvptx64-nvidia-cuda-LTO
// Fails on amdgpu with error: GPU Memory Error
// XFAIL: amdgcn-amd-amdhsa
// XFAIL: amdgcn-amd-amdhsa-oldDriver
// XFAIL: amdgcn-amd-amdhsa-LTO
#include <stdio.h>
#include <omp.h>
// ---------------------------------------------------------------------------
// Various definitions copied from OpenMP RTL
extern void __tgt_register_requires(int64_t);
// End of definitions copied from OpenMP RTL.
// ---------------------------------------------------------------------------
#pragma omp requires unified_shared_memory
#define N 1024
void init(int A[], int B[], int C[]) {
for (int i = 0; i < N; ++i) {
A[i] = 0;
B[i] = 1;
C[i] = i;
}
}
int main(int argc, char *argv[]) {
const int device = omp_get_default_device();
// Manual registration of requires flags for Clang versions
// that do not support requires.
__tgt_register_requires(8);
// CHECK: Initial device: [[INITIAL_DEVICE:[0-9]+]]
printf("Initial device: %d\n", omp_get_initial_device());
// CHECK: Num devices: [[INITIAL_DEVICE]]
printf("Num devices: %d\n", omp_get_num_devices());
//
// Target alloc & target memcpy
//
int A[N], B[N], C[N];
// Init
init(A, B, C);
int *pA, *pB, *pC;
// map ptrs
pA = &A[0];
pB = &B[0];
pC = &C[0];
int *d_A = (int *)omp_target_alloc(N * sizeof(int), device);
int *d_B = (int *)omp_target_alloc(N * sizeof(int), device);
int *d_C = (int *)omp_target_alloc(N * sizeof(int), device);
// CHECK: omp_target_alloc succeeded
printf("omp_target_alloc %s\n", d_A && d_B && d_C ? "succeeded" : "failed");
omp_target_memcpy(d_B, pB, N * sizeof(int), 0, 0, device,
omp_get_initial_device());
omp_target_memcpy(d_C, pC, N * sizeof(int), 0, 0, device,
omp_get_initial_device());
#pragma omp target is_device_ptr(d_A, d_B, d_C) device(device)
{
#pragma omp parallel for schedule(static, 1)
for (int i = 0; i < N; i++) {
d_A[i] = d_B[i] + d_C[i] + 1;
}
}
omp_target_memcpy(pA, d_A, N * sizeof(int), 0, 0, omp_get_initial_device(),
device);
// CHECK: Test omp_target_memcpy: Succeeded
int fail = 0;
for (int i = 0; i < N; ++i) {
if (A[i] != i + 2)
fail++;
}
if (fail) {
printf("Test omp_target_memcpy: Failed\n");
} else {
printf("Test omp_target_memcpy: Succeeded\n");
}
//
// target_is_present and target_associate/disassociate_ptr
//
init(A, B, C);
// CHECK: B is not present, associating it...
// CHECK: omp_target_associate_ptr B succeeded
if (!omp_target_is_present(B, device)) {
printf("B is not present, associating it...\n");
int rc = omp_target_associate_ptr(B, d_B, N * sizeof(int), 0, device);
printf("omp_target_associate_ptr B %s\n", !rc ? "succeeded" : "failed");
}
// CHECK: C is not present, associating it...
// CHECK: omp_target_associate_ptr C succeeded
if (!omp_target_is_present(C, device)) {
printf("C is not present, associating it...\n");
int rc = omp_target_associate_ptr(C, d_C, N * sizeof(int), 0, device);
printf("omp_target_associate_ptr C %s\n", !rc ? "succeeded" : "failed");
}
// CHECK: Inside target data: A is not present
// CHECK: Inside target data: B is present
// CHECK: Inside target data: C is present
#pragma omp target data map(from : B, C) device(device)
{
printf("Inside target data: A is%s present\n",
omp_target_is_present(A, device) ? "" : " not");
printf("Inside target data: B is%s present\n",
omp_target_is_present(B, device) ? "" : " not");
printf("Inside target data: C is%s present\n",
omp_target_is_present(C, device) ? "" : " not");
#pragma omp target map(from : A) device(device)
{
#pragma omp parallel for schedule(static, 1)
for (int i = 0; i < N; i++)
A[i] = B[i] + C[i] + 1;
}
}
// CHECK: B is present, disassociating it...
// CHECK: omp_target_disassociate_ptr B succeeded
// CHECK: C is present, disassociating it...
// CHECK: omp_target_disassociate_ptr C succeeded
if (omp_target_is_present(B, device)) {
printf("B is present, disassociating it...\n");
int rc = omp_target_disassociate_ptr(B, device);
printf("omp_target_disassociate_ptr B %s\n", !rc ? "succeeded" : "failed");
}
if (omp_target_is_present(C, device)) {
printf("C is present, disassociating it...\n");
int rc = omp_target_disassociate_ptr(C, device);
printf("omp_target_disassociate_ptr C %s\n", !rc ? "succeeded" : "failed");
}
// CHECK: Test omp_target_associate_ptr: Succeeded
fail = 0;
for (int i = 0; i < N; ++i) {
if (A[i] != i + 2)
fail++;
}
if (fail) {
printf("Test omp_target_associate_ptr: Failed\n");
} else {
printf("Test omp_target_associate_ptr: Succeeded\n");
}
omp_target_free(d_A, device);
omp_target_free(d_B, device);
omp_target_free(d_C, device);
printf("Done!\n");
return 0;
}
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