rocm-systems/tests/src/runtimeApi/stream/hipStreamWaitEvent.cpp

/*
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*/

/* HIT_START
 * BUILD: %t %s ../../test_common.cpp
 * RUN: %t
 * HIT_END
 */

// Test under-development.  Calls async mem-copy API, experiment with functionality.

#include "hip/hip_runtime.h"
#include "test_common.h"
#include <vector>
#include <limits>
unsigned p_streams = 6;
unsigned p_db = 0;


template <typename T>
__global__ void
addOne( const T *A_d,
        T *C_d,
        size_t NELEM)
{
    size_t offset = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x);
    size_t stride = hipBlockDim_x * hipGridDim_x ;

    for (size_t i=offset; i<NELEM; i+=stride) {
        C_d[i] = A_d[i] + (T)1;
        //C_d[i] = (T)1;
	}
}


template <typename T>
__global__ void
addOneReverse( const T *A_d,
        T *C_d,
        int64_t NELEM)
{
    size_t offset = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x);
    size_t stride = hipBlockDim_x * hipGridDim_x ;

    for (int64_t i=NELEM-stride+offset; i>=0; i-=stride) {
        C_d[i] = A_d[i] + (T)1;
        //C_d[i] = (T)1;
	}
}


//------
// Structure for one stream;
template <typename T>
class Streamer {
public:
    Streamer(T *input, size_t numElements, bool reverse);
    ~Streamer();
    void runAsyncAfter(Streamer<T> *depStreamer);
    void runAsyncWaitSameStream();
    void queryUntilComplete();

    void syncAndCheck(int streamerNum, T initValue, T expectedOffset);

    hipEvent_t event() { return _event; };

    T *C_d() { return _C_d; };


private:
    T *_C_h;

    T *_A_d;
    T *_C_d;

    hipStream_t _stream;
    hipEvent_t  _event;

    size_t      _numElements;
    bool        _reverse;
};


template <typename T>
Streamer<T>::Streamer(T * A_d, size_t numElements, bool reverse) :
    _A_d(A_d),
    _numElements(numElements),
    _reverse(reverse)
{
    size_t sizeElements = numElements * sizeof(int);

    HIPCHECK(hipMalloc(&_C_d, sizeElements));
    HIPCHECK(hipHostMalloc(&_C_h, sizeElements));

    HIPCHECK(hipMemset(_C_d, -1, sizeElements));
    HIPCHECK(hipMemset(_C_h, -2, sizeElements));

    HIPCHECK(hipStreamCreate(&_stream));
    HIPCHECK(hipEventCreate(&_event));
};


template <typename T>
void Streamer<T>::runAsyncAfter(Streamer<T> *depStreamer)
{
    if (p_db) {
      printf ("testing: %s  numElements=%zu size=%6.2fMB\n", __func__, _numElements, _numElements * sizeof(T) / 1024.0/1024.0);
    }

    if (depStreamer) {
        HIPCHECK(hipStreamWaitEvent(_stream, depStreamer->event(), 0));
    }

    unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, _numElements);
    if (_reverse) {
        hipLaunchKernelGGL(addOneReverse , dim3(blocks), dim3(threadsPerBlock), 0, _stream,    _A_d, _C_d, _numElements);
    } else {
        hipLaunchKernelGGL(addOne,         dim3(blocks), dim3(threadsPerBlock), 0, _stream,    _A_d, _C_d, _numElements);
    }
    HIPCHECK(hipEventRecord(_event, _stream));
}


template <typename T>
void Streamer<T>::runAsyncWaitSameStream()
{
    printf ("testing: %s  numElements=%zu size=%6.2fMB\n", __func__, _numElements, _numElements * sizeof(T) / 1024.0/1024.0);
    unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, _numElements);
    if (_reverse) {
        hipLaunchKernelGGL(addOneReverse , dim3(blocks), dim3(threadsPerBlock), 0, _stream,    _A_d, _C_d, _numElements);
    } else {
        hipLaunchKernelGGL(addOne,         dim3(blocks), dim3(threadsPerBlock), 0, _stream,    _A_d, _C_d, _numElements);
    }

    // Test case where hipStreamWaitEvent waits on same event we just placed into the queue.
    HIPCHECK(hipEventRecord(_event, _stream));
    HIPCHECK(hipStreamWaitEvent(_stream, _event, 0));
}


template <typename T>
void Streamer<T>::queryUntilComplete()
{
    int numQueries = 0;
    hipError_t e = hipSuccess;
    do {
        numQueries++;
        e = hipStreamQuery(_stream);
    } while (e != hipSuccess) ;

    printf ("info: hipStreamQuery completed after %d queries\n", numQueries);
};


template <typename T>
void Streamer<T>::syncAndCheck(int streamerNum, T initValue, T expectedOffset)
{
    HIPCHECK(hipMemcpyAsync(_C_h, _C_d, _numElements*sizeof(T), hipMemcpyDeviceToHost, _stream));
    HIPCHECK(hipStreamSynchronize(_stream));

    T expected = initValue + expectedOffset;

    for (size_t i=0; i<_numElements; i++) {
        if (_C_h[i] != expected) {
            failed("for streamer:%d  _C_h[%zu] (%d)  !=  expected(%d)\n", streamerNum, i, _C_h[i], expected);
        }
    }
}

   

//---
//Parse arguments specific to this test.
void parseMyArguments(int argc, char *argv[])
{
    int more_argc = HipTest::parseStandardArguments(argc, argv, false);

    // parse args for this test:
    for (int i = 1; i < more_argc; i++) {
        const char *arg = argv[i];

        if (!strcmp(arg, "--streams")) {
            if (++i >= argc || !HipTest::parseUInt(argv[i], &p_streams)) {
               failed("Bad streams argument");
            }
        } else {
            failed("Bad argument '%s'", arg);
        }
    };
};



//---
int main(int argc, char *argv[])
{
    HipTest::parseStandardArguments(argc, argv, false);
    parseMyArguments(argc, argv);

    typedef Streamer<int> IntStreamer;

    std::vector<IntStreamer *> streamers;

    size_t numElements = N;
    size_t sizeElements = numElements * sizeof(int);

    assert (sizeElements <= std::numeric_limits<int64_t>::max());


    int initValue = 1000;

    int * initArray_d, *initArray_h;
    HIPCHECK(hipMalloc(&initArray_d, sizeElements));
    HIPCHECK(hipHostMalloc(&initArray_h, sizeElements));
    for (size_t i=0; i<numElements; i++) {
        initArray_h[i] = initValue;
    }
    HIPCHECK(hipMemcpy(initArray_d, initArray_h, sizeElements, hipMemcpyHostToDevice));
    


    for (int i=0; i<p_streams; i++) {
        IntStreamer * s = new IntStreamer(i ? streamers.back()->C_d() : initArray_d, numElements, i&1 /*reverse?*/);
        streamers.push_back(s);
    }

    if (p_tests & 0x1) {
        printf ("==> Test 0x1 runAsyncAfter\n");
        for (int i=0; i<p_streams; i++) {
            streamers[i]->runAsyncAfter(i ? streamers[i-1] : NULL);
        }
        HIPCHECK(hipDeviceSynchronize());

        for (int i=0; i<p_streams; i++) {
            streamers[i]->syncAndCheck(i+1, initValue, i+1);
        }
    }

    if (p_tests & 0x2) {
        printf ("==> Test 0x2 queryUntilComplete\n");
        for (int i=0; i<p_streams; i++) {
            streamers[i]->runAsyncAfter(i ? streamers[i-1] : NULL);
            streamers[i]->queryUntilComplete();
        }
        HIPCHECK(hipDeviceSynchronize());
    }

    if (p_tests & 0x4) {
        printf ("==> Test 0x4 try null stream"); 
        hipStreamQuery(0/* try null stream*/);

    }

    if (p_tests & 0x8) {
        printf ("==> Test 0x8 runAsyncWaitSameStream\n");
        for (int i=0; i<p_streams; i++) {
            streamers[i]->runAsyncWaitSameStream();
        }
        HIPCHECK(hipDeviceSynchronize());
    }


    passed();
}