Wenkai Du
95 líneas
3.8 KiB
C++
95 líneas
3.8 KiB
C++
/*************************************************************************
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* Copyright (c) 2019-2020 Advanced Micro Devices, Inc. All rights reserved.
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*
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* See LICENSE.txt for license information
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************************************************************************/
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#include "test_AllToAllv.hpp"
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namespace CorrectnessTests
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{
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TEST_P(AllToAllvCorrectnessTest, Correctness)
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{
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if (numDevices > numDevicesAvailable) return;
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// Allocate data
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Dataset dataset;
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dataset.Initialize(numDevices, numElements, dataType, inPlace, ncclCollAllToAll);
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// Prepare input / output / expected results
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FillDatasetWithPattern(dataset);
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ComputeExpectedResults(dataset);
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size_t chunksize = numElements*2/numDevices;
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#define MAX_ALLTOALLV_RANKS 16
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static size_t sendcounts[MAX_ALLTOALLV_RANKS], recvcounts[MAX_ALLTOALLV_RANKS], sdispls[MAX_ALLTOALLV_RANKS], rdispls[MAX_ALLTOALLV_RANKS];
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// Launch the reduction (1 thread per GPU)
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ncclGroupStart();
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for (int r = 0; r < numDevices; r++) {
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size_t disp = 0;
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for (int i = 0; i < numDevices; i++) {
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size_t scount = ((i+r)%numDevices)*chunksize;
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if (i+r == numDevices-1)
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scount += (numElements*numDevices-chunksize*(numDevices-1)*numDevices/2);
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sendcounts[i] = recvcounts[i] = scount;
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sdispls[i] = rdispls[i] = disp;
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disp += scount;
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}
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for (int i = 0; i < numDevices; i++) {
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if (sendcounts[i] != 0) {
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ncclSend(
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((char*)dataset.inputs[r]) + sdispls[i] * DataTypeToBytes(dataType),
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sendcounts[i],
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dataType,
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i,
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comms[r],
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streams[r]);
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}
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if (recvcounts[i] != 0) {
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ncclRecv(
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((char*)dataset.outputs[r]) + rdispls[i] * DataTypeToBytes(dataType),
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recvcounts[i],
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dataType,
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i,
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comms[r],
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streams[r]);
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}
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}
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}
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ncclGroupEnd();
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// Wait for reduction to complete
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Synchronize();
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// Check results
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ValidateResults(dataset);
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dataset.Release();
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}
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INSTANTIATE_TEST_SUITE_P(AllToAllvCorrectnessSweep,
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AllToAllvCorrectnessTest,
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testing::Combine(
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// Reduction operator is not used
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testing::Values(ncclSum),
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// Data types
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testing::Values(ncclInt8,
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ncclUint8,
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ncclInt32,
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ncclUint32,
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ncclInt64,
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ncclUint64,
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//ncclFloat16,
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ncclFloat32,
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ncclFloat64,
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ncclBfloat16),
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// Number of elements
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testing::Values(2520, 3026520),
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// Number of devices
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testing::Values(2,3,4,5,6,7,8),
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// In-place or not
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testing::Values(false),
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testing::Values("")),
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CorrectnessTest::PrintToStringParamName());
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} // namespace
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