rocm-systems/projects/hip/tests/src/runtimeApi/memory/hipMemoryAllocate.cpp

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

#include"test_common.h"

#define NUM_ELEMENTS 1024*1024*64
#define SIZE NUM_ELEMENTS*sizeof(int)

int p_count = 4;


void multiGpuHostAlloc(int allocDevice)
{

    int numDevices;
    HIPCHECK(hipGetDeviceCount(&numDevices));
    assert(numDevices > 1);

    printf ("info: trying multiGpuHostAlloc with allocDevice=%d numDevices=%d\n", allocDevice, numDevices);


    HIPCHECK(hipSetDevice(allocDevice));

    int *Ah, *Ch;
    hipHostMalloc((void**)&Ah, SIZE);
    hipHostMalloc((void**)&Ch, SIZE);

    const int init = -1;
    for (size_t i=0; i<NUM_ELEMENTS; i++) {
        Ah[i] = init;
        Ch[i] = -2;
    }

    unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, NUM_ELEMENTS);

    // The host memory allocations should be visible on all of the devices - verify by launching a kernel here that reads those devices:
    for (int i=0; i<numDevices; i++)  {
        HIPCHECK(hipSetDevice(i));
        hipLaunchKernelGGL(HipTest::addCountReverse , dim3(blocks), dim3(threadsPerBlock), 0, 0/*_stream*/,    Ah, Ch, NUM_ELEMENTS, p_count);
        HIPCHECK(hipDeviceSynchronize());
    };


    int expected = init + p_count;
    for (size_t i=0; i<NUM_ELEMENTS; i++) {
        if (Ch[i] != expected) {
            failed("for Ch[%zu] (%d)  !=  expected(%d)\n", i, Ch[i], expected);
        }
    }
}


int main(int argc, char *argv[])
{
    int more_argc = HipTest::parseStandardArguments(argc, argv, false);
    //assert(more_argc == 0);

    {
        float *Ad, *B, *Bd, *Bm, *C, *Cd, *ptr_0;
        B = (float*)malloc(SIZE);
        hipMalloc((void**)&Ad, SIZE);
        hipHostMalloc((void**)&B, SIZE);
        hipHostMalloc((void**)&Bd, SIZE, hipHostMallocDefault);
        hipHostMalloc((void**)&Bm, SIZE, hipHostMallocMapped);
        hipHostMalloc((void**)&C, SIZE, hipHostMallocMapped);

        hipHostGetDevicePointer((void**)&Cd, C, 0/*flags*/);

        HIPCHECK_API(hipMalloc((void**)&ptr_0,0), hipSuccess);

        HIPCHECK_API(hipFree(Ad) ,  hipSuccess);
        HIPCHECK_API(hipHostFree(Ad) , hipErrorInvalidValue);

        HIPCHECK_API(hipFree(B)  , hipErrorInvalidDevicePointer); // try to hipFree on malloced memory
        HIPCHECK_API(hipFree(Bd) , hipErrorInvalidDevicePointer);
        HIPCHECK_API(hipFree(Bm) , hipErrorInvalidDevicePointer);
        HIPCHECK_API(hipFree(ptr_0) , hipSuccess);
        HIPCHECK_API(hipHostFree(Bd) , hipSuccess);
        HIPCHECK_API(hipHostFree(Bm) , hipSuccess);

        HIPCHECK_API(hipFree(C) , hipErrorInvalidDevicePointer);
        HIPCHECK_API(hipHostFree(C) , hipSuccess);


        HIPCHECK_API(hipFree(NULL) , hipSuccess);
        HIPCHECK_API(hipHostFree(NULL) , hipSuccess);

        {
            // Some negative testing - request a too-big allocation and verify it fails:
            // Someday when we support virtual memory may need to refactor these:
            size_t tooBig = 128LL*1024*1024*1024*1024;  // 128 TB;
            void *p;
            HIPCHECK_API ( hipMalloc(&p, tooBig),  hipErrorMemoryAllocation );
            HIPCHECK_API ( hipHostMalloc(&p, tooBig),  hipErrorMemoryAllocation );
        }
    }


    {
        int numDevices;
        HIPCHECK(hipGetDeviceCount(&numDevices));
        assert(numDevices > 1);

        multiGpuHostAlloc(0);
        multiGpuHostAlloc(1);
    }

    passed();
}