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#include "CUDATest.hpp"
#include <ATen/cuda/Exceptions.h>
namespace c10d {
namespace test {
namespace {
__global__ void waitClocks(const uint64_t count) {
// Few AMD specific GPUs have different clock intrinsic
#if defined(__GFX11__) && defined(USE_ROCM) && !defined(__CUDA_ARCH__)
clock_t start = wall_clock64();
#else
clock_t start = clock64();
#endif
clock_t offset = 0;
while (offset < count) {
offset = clock() - start;
}
}
} // namespace
void cudaSleep(at::cuda::CUDAStream& stream, uint64_t clocks) {
waitClocks<<<1, 1, 0, stream.stream()>>>(clocks);
C10_CUDA_KERNEL_LAUNCH_CHECK();
}
int cudaNumDevices() {
int n = 0;
C10_CUDA_CHECK_WARN(cudaGetDeviceCount(&n));
return n;
}
} // namespace test
} // namespace c10d
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