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#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <c10/cuda/CUDADeviceAssertion.h>
#include <c10/cuda/CUDAException.h>
#include <c10/cuda/CUDAFunctions.h>
#include <c10/cuda/CUDAStream.h>
#include <chrono>
#include <iostream>
#include <string>
#include <thread>
using ::testing::HasSubstr;
const auto max_assertions_failure_str =
"Assertion failure " + std::to_string(C10_CUDA_DSA_ASSERTION_COUNT - 1);
/**
* Device kernel that takes a single integer parameter as argument and
* will always trigger a device side assertion.
*/
__global__ void cuda_always_fail_assertion_kernel(
const int a,
TORCH_DSA_KERNEL_ARGS) {
CUDA_KERNEL_ASSERT2(a != a);
}
/**
* TEST: Triggering device side assertion from single block and multiple threads
* <<<1,128>>>. Once the very first thread asserts all the other threads will
* basically be in bad state and the block id with failed assertion would be
* [0,0,0].
*/
void cuda_device_assertions_multiple_writes_from_same_block() {
const auto stream = c10::cuda::getStreamFromPool();
TORCH_DSA_KERNEL_LAUNCH(
cuda_always_fail_assertion_kernel,
1, /* Blocks */
128, /* Threads */
0, /* Shared mem */
stream, /* Stream */
1);
try {
c10::cuda::device_synchronize();
throw std::runtime_error("Test didn't fail, but should have.");
} catch (const c10::Error& err) {
const auto err_str = std::string(err.what());
ASSERT_THAT(err_str, HasSubstr(max_assertions_failure_str));
ASSERT_THAT(err_str, HasSubstr("Block ID that failed assertion = [0,0,0]"));
ASSERT_THAT(err_str, HasSubstr("Device that launched kernel = 0"));
ASSERT_THAT(
err_str,
HasSubstr(
"Name of kernel launched that led to failure = cuda_always_fail_assertion_kernel"));
ASSERT_THAT(
err_str, HasSubstr("File containing kernel launch = " __FILE__));
ASSERT_THAT(
err_str,
HasSubstr(
"Function containing kernel launch = " +
std::string(__FUNCTION__)));
ASSERT_THAT(
err_str,
HasSubstr(
"Stream kernel was launched on = " + std::to_string(stream.id())));
}
}
TEST(CUDATest, cuda_device_assertions_multiple_writes_from_same_block) {
#ifdef TORCH_USE_CUDA_DSA
c10::cuda::CUDAKernelLaunchRegistry::get_singleton_ref().enabled_at_runtime = true;
cuda_device_assertions_multiple_writes_from_same_block();
#else
GTEST_SKIP() << "CUDA device-side assertions (DSA) was not enabled at compile time.";
#endif
}
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