int main() { size_t Nbytes = N * sizeof(int); int numDevices = 0; int *A_d, *B_d, *C_d, *X_d, *Y_d, *Z_d; int *A_h, *B_h, *C_h; hipStream_t s; HIPCHECK(hipGetDeviceCount(&numDevices)); if (numDevices > 1) { HIPCHECK(hipSetDevice(0)); unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N); HipTest::initArrays(&A_d, &B_d, &C_d, &A_h, &B_h, &C_h, N, false); HIPCHECK(hipSetDevice(1)); HIPCHECK(hipMalloc(&X_d, Nbytes)); HIPCHECK(hipMalloc(&Y_d, Nbytes)); HIPCHECK(hipMalloc(&Z_d, Nbytes)); HIPCHECK(hipSetDevice(0)); HIPCHECK(hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice)); HIPCHECK(hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice)); hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, 0, static_cast<const int*>(A_d), static_cast<const int*>(B_d), C_d, N); HIPCHECK(hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost)); HIPCHECK(hipDeviceSynchronize()); HipTest::checkVectorADD(A_h, B_h, C_h, N); HIPCHECK(hipSetDevice(1)); HIPCHECK(hipStreamCreate(&s)); HIPCHECK(hipMemcpyDtoDAsync((hipDeviceptr_t)X_d, (hipDeviceptr_t)A_d, Nbytes, s)); HIPCHECK(hipMemcpyDtoDAsync((hipDeviceptr_t)Y_d, (hipDeviceptr_t)B_d, Nbytes, s)); hipLaunchKernelGGL(HipTest::vectorADD, dim3(blocks), dim3(threadsPerBlock), 0, 0, static_cast<const int*>(X_d), static_cast<const int*>(Y_d), Z_d, N); HIPCHECK(hipMemcpyDtoHAsync(C_h, (hipDeviceptr_t)Z_d, Nbytes, s)); HIPCHECK(hipStreamSynchronize(s)); HIPCHECK(hipDeviceSynchronize()); HipTest::checkVectorADD(A_h, B_h, C_h, N); HIPCHECK(hipStreamDestroy(s)); HipTest::freeArrays(A_d, B_d, C_d, A_h, B_h, C_h, false); HIPCHECK(hipFree(X_d)); HIPCHECK(hipFree(Y_d)); HIPCHECK(hipFree(Z_d)); } passed(); }
int main() { int *A, *Am, *B, *Ad, *C, *Cm; A = new int[NUM]; B = new int[NUM]; C = new int[NUM]; for(int i=0;i<NUM;i++) { A[i] = -1*i; B[i] = 0; C[i] = 0; } hipMalloc((void**)&Ad, SIZE); hipHostMalloc((void**)&Am, SIZE); hipHostMalloc((void**)&Cm, SIZE); for(int i=0;i<NUM;i++) { Am[i] = -1*i; Cm[i] = 0; } hipStream_t stream; hipStreamCreate(&stream); hipMemcpyToSymbolAsync(HIP_SYMBOL(globalIn), Am, SIZE, 0, hipMemcpyHostToDevice, stream); hipStreamSynchronize(stream); hipLaunchKernel(Assign, dim3(1,1,1), dim3(NUM,1,1), 0, 0, Ad); hipMemcpy(B, Ad, SIZE, hipMemcpyDeviceToHost); hipMemcpyFromSymbolAsync(Cm, HIP_SYMBOL(globalOut), SIZE, 0, hipMemcpyDeviceToHost, stream); hipStreamSynchronize(stream); for(int i=0;i<NUM;i++) { assert(Am[i] == B[i]); assert(Am[i] == Cm[i]); } for(int i=0;i<NUM;i++) { A[i] = -2*i; B[i] = 0; } hipMemcpyToSymbol(HIP_SYMBOL(globalIn), A, SIZE, 0, hipMemcpyHostToDevice); hipLaunchKernel(Assign, dim3(1,1,1), dim3(NUM,1,1), 0, 0, Ad); hipMemcpy(B, Ad, SIZE, hipMemcpyDeviceToHost); hipMemcpyFromSymbol(C, HIP_SYMBOL(globalOut), SIZE, 0, hipMemcpyDeviceToHost); for(int i=0;i<NUM;i++) { assert(A[i] == B[i]); assert(A[i] == C[i]); } for(int i=0;i<NUM;i++) { A[i] = -3*i; B[i] = 0; } hipMemcpyToSymbolAsync(HIP_SYMBOL(globalIn), A, SIZE, 0, hipMemcpyHostToDevice, stream); hipStreamSynchronize(stream); hipLaunchKernel(Assign, dim3(1,1,1), dim3(NUM,1,1), 0, 0, Ad); hipMemcpy(B, Ad, SIZE, hipMemcpyDeviceToHost); hipMemcpyFromSymbolAsync(C, HIP_SYMBOL(globalOut), SIZE, 0, hipMemcpyDeviceToHost, stream); hipStreamSynchronize(stream); for(int i=0;i<NUM;i++) { assert(A[i] == B[i]); assert(A[i] == C[i]); } hipHostFree(Am); hipHostFree(Cm); hipFree(Ad); delete[] A; delete[] B; delete[] C; passed(); }
void test(unsigned testMask, int *C_d, int *C_h, int64_t numElements, SyncMode syncMode, bool expectMismatch) { // This test sends a long-running kernel to the null stream, then tests to see if the // specified synchronization technique is effective. // // Some syncMode are not expected to correctly sync (for example "syncNone"). in these // cases the test sets expectMismatch and the check logic below will attempt to ensure that // the undesired synchronization did not occur - ie ensure the kernel is still running and did // not yet update the stop event. This can be tricky since if the kernel runs fast enough it // may complete before the check. To prevent this, the addCountReverse has a count parameter // which causes it to loop repeatedly, and the results are checked in reverse order. // // Tests with expectMismatch=true should ensure the kernel finishes correctly. This results // are checked and we test to make sure stop event has completed. if (!(testMask & p_tests)) { return; } printf ("\ntest 0x%02x: syncMode=%s expectMismatch=%d\n", testMask, syncModeString(syncMode), expectMismatch); size_t sizeBytes = numElements * sizeof(int); int count =100; int init0 = 0; HIPCHECK(hipMemset(C_d, init0, sizeBytes)); for (int i=0; i<numElements; i++) { C_h[i] = -1; // initialize } hipStream_t otherStream = 0; unsigned flags = (syncMode == syncMarkerThenOtherNonBlockingStream) ? hipStreamNonBlocking : hipStreamDefault; HIPCHECK(hipStreamCreateWithFlags(&otherStream, flags)); hipEvent_t stop, otherStreamEvent; HIPCHECK(hipEventCreate(&stop)); HIPCHECK(hipEventCreate(&otherStreamEvent)); unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, numElements); // Launch kernel into null stream, should result in C_h == count. hipLaunchKernelGGL( HipTest::addCountReverse, dim3(blocks), dim3(threadsPerBlock), 0, 0 /*stream*/, static_cast<const int*>(C_d), C_h, numElements, count); HIPCHECK(hipEventRecord(stop, 0/*default*/)); switch (syncMode) { case syncNone: break; case syncNullStream: HIPCHECK(hipStreamSynchronize(0)); // wait on host for null stream: break; case syncOtherStream: // Does this synchronize with the null stream? HIPCHECK(hipStreamSynchronize(otherStream)); break; case syncMarkerThenOtherStream: case syncMarkerThenOtherNonBlockingStream: // this may wait for NULL stream depending hipStreamNonBlocking flag above HIPCHECK(hipEventRecord(otherStreamEvent, otherStream)); HIPCHECK(hipStreamSynchronize(otherStream)); break; case syncDevice: HIPCHECK(hipDeviceSynchronize()); break; default: assert(0); }; hipError_t done = hipEventQuery(stop); if (expectMismatch) { assert (done == hipErrorNotReady); } else { assert (done == hipSuccess); } int mismatches = 0; int expected = init0 + count; for (int i=0; i<numElements; i++) { bool compareEqual = (C_h[i] == expected); if (!compareEqual) { mismatches ++; if (!expectMismatch) { printf ("C_h[%d] (%d) != %d\n", i, C_h[i], expected); assert(C_h[i] == expected); } } } if (expectMismatch) { assert (mismatches > 0); } HIPCHECK(hipStreamDestroy(otherStream)); HIPCHECK(hipEventDestroy(stop)); HIPCHECK(hipEventDestroy(otherStreamEvent)); HIPCHECK(hipDeviceSynchronize()); printf ("test: OK - %d mismatches (%6.2f%%)\n", mismatches, ((double)(mismatches)*100.0)/numElements); }