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/*************************************************************************
* Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.
*
* See LICENSE.txt for license information
************************************************************************/
#include "CollectiveArgs.hpp"
#include "gtest/gtest.h"
namespace RcclUnitTesting
{
ErrCode CollectiveArgs::SetArgs(int const globalRank,
int const totalRanks,
int const deviceId,
ncclFunc_t const funcType,
ncclDataType_t const dataType,
size_t const numInputElements,
size_t const numOutputElements,
OptionalColArgs const &optionalColArgs)
{
// Free scalar based on previous scalarMode
if (optionalColArgs.scalarMode != -1)
{
if (this->localScalar.ptr != nullptr)
{
if (this->options.scalarMode == 0) this->localScalar.FreeGpuMem();
if (this->options.scalarMode == 1) hipHostFree(this->localScalar.ptr);
}
}
this->globalRank = globalRank;
this->totalRanks = totalRanks;
this->deviceId = deviceId;
this->funcType = funcType;
this->dataType = dataType;
this->numInputElements = numInputElements;
this->numOutputElements = numOutputElements;
this->options = optionalColArgs;
if (this->options.scalarMode != -1)
{
size_t const numBytes = DataTypeToBytes(dataType);
if (this->options.scalarMode == ncclScalarDevice)
{
CHECK_CALL(this->localScalar.AllocateGpuMem(numBytes));
CHECK_HIP(hipMemcpy(this->localScalar.ptr, optionalColArgs.scalarTransport.ptr + (globalRank * numBytes),
numBytes, hipMemcpyHostToDevice));
}
else if (this->options.scalarMode == ncclScalarHostImmediate)
{
CHECK_HIP(hipHostMalloc(&this->localScalar.ptr, numBytes, 0));
memcpy(this->localScalar.ptr, optionalColArgs.scalarTransport.ptr + (globalRank * numBytes), numBytes);
}
}
return TEST_SUCCESS;
}
ErrCode CollectiveArgs::AllocateMem(bool const inPlace,
bool const useManagedMem)
{
this->numInputBytesAllocated = this->numInputElements * DataTypeToBytes(this->dataType);
this->numOutputBytesAllocated = this->numOutputElements * DataTypeToBytes(this->dataType);
this->numInputElementsAllocated = this->numInputElements;
this->numOutputElementsAllocated = this->numOutputElements;
this->inPlace = inPlace;
this->useManagedMem = useManagedMem;
if (hipSetDevice(this->deviceId) != hipSuccess)
{
ERROR("Unable to call hipSetDevice to set to GPU %d\n", this->deviceId);
return TEST_FAIL;
}
if (inPlace)
{
if (this->funcType == ncclCollScatter)
{
CHECK_CALL(this->inputGpu.AllocateGpuMem(this->numInputBytesAllocated, useManagedMem));
this->outputGpu.Attach(this->inputGpu.U1 + (this->globalRank * this->numOutputBytesAllocated));
}
else if (this->funcType == ncclCollGather)
{
CHECK_CALL(this->outputGpu.AllocateGpuMem(this->numOutputBytesAllocated, useManagedMem));
this->inputGpu.Attach(this->outputGpu.U1 + (this->globalRank * this->numInputBytesAllocated));
}
else
{
size_t const numBytes = std::max(this->numInputBytesAllocated, this->numOutputBytesAllocated);
CHECK_CALL(this->inputGpu.AllocateGpuMem(numBytes, useManagedMem));
this->outputGpu.Attach(this->inputGpu.ptr);
}
CHECK_CALL(this->expected.AllocateCpuMem(this->numOutputBytesAllocated));
}
else
{
CHECK_CALL(this->inputGpu.AllocateGpuMem(this->numInputBytesAllocated, useManagedMem));
CHECK_CALL(this->outputGpu.AllocateGpuMem(this->numOutputBytesAllocated, useManagedMem));
CHECK_CALL(this->expected.AllocateCpuMem(this->numOutputBytesAllocated));
}
CHECK_CALL(this->outputCpu.AllocateCpuMem(this->numOutputBytesAllocated));
return TEST_SUCCESS;
}
ErrCode CollectiveArgs::PrepareData(CollFuncPtr const prepareDataFunc)
{
CollFuncPtr prepFunc = (prepareDataFunc == nullptr ? DefaultPrepareDataFunc : prepareDataFunc);
return prepFunc(*this);
}
ErrCode CollectiveArgs::ValidateResults()
{
// Ignore non-root outputs for collectives with a root
if (CollectiveArgs::UsesRoot(this->funcType) && this->options.root != this->globalRank) return TEST_SUCCESS;
if (this->funcType == ncclCollSend) return TEST_SUCCESS; // on the send receive pair only recv needs to be checked
size_t const numOutputBytes = (this->numOutputElements * DataTypeToBytes(this->dataType));
CHECK_HIP(hipMemcpy(this->outputCpu.ptr, this->outputGpu.ptr, numOutputBytes, hipMemcpyDeviceToHost));
bool isMatch = true;
CHECK_CALL(this->outputCpu.IsEqual(this->dataType,
this->numOutputElements,
this->expected,
true,
isMatch));
if (!isMatch) ERROR("Mismatch for %s\n", this->GetDescription().c_str());
return isMatch ? TEST_SUCCESS : TEST_FAIL;
}
ErrCode CollectiveArgs::DeallocateMem()
{
// If in-place, either only inputGpu or outputGpu was allocated
if (this->inPlace)
{
if (this->funcType == ncclCollGather)
this->outputGpu.FreeGpuMem();
else
this->inputGpu.FreeGpuMem();
}
else
{
this->inputGpu.FreeGpuMem();
this->outputGpu.FreeGpuMem();
}
this->outputCpu.FreeCpuMem();
this->expected.FreeCpuMem();
if (this->localScalar.ptr != nullptr)
{
if (this->options.scalarMode == 0) this->localScalar.FreeGpuMem();
if (this->options.scalarMode == 1) CHECK_HIP(hipHostFree(this->localScalar.ptr));
this->localScalar.Attach(nullptr);
}
return TEST_SUCCESS;
}
std::string CollectiveArgs::GetDescription() const
{
std::stringstream ss;
ss << "(Rank " << this->globalRank << ") ";
switch (this->funcType)
{
case ncclCollBroadcast: ss << "ncclBroadcast"; break;
case ncclCollReduce: ss << "ncclReduce"; break;
case ncclCollAllGather: ss << "ncclAllGather"; break;
case ncclCollReduceScatter: ss << "ncclReduceScatter"; break;
case ncclCollAllReduce: ss << "ncclAllReduce"; break;
case ncclCollGather: ss << "ncclGather"; break;
case ncclCollScatter: ss << "ncclScatter"; break;
case ncclCollAllToAll: ss << "ncclAllToAll"; break;
case ncclCollAllToAllv: ss << "ncclAllToAllv"; break;
case ncclCollSend: ss << "ncclSend"; break;
case ncclCollRecv: ss << "ncclRecv"; break;
default: ss << "[Unknown]"; break;
}
ss << " " << ncclDataTypeNames[this->dataType] << " ";
if (this->funcType == ncclCollReduce ||
this->funcType == ncclCollReduceScatter ||
this->funcType == ncclCollAllReduce)
{
if (this->options.redOp < ncclNumOps)
{
ss << ncclRedOpNames[this->options.redOp] << " ";
}
else
{
ss << "CustomScalar ";
PtrUnion scalarsPerRank;
scalarsPerRank.Attach(scalarsPerRank.ptr);
switch (this->dataType)
{
case ncclInt8: ss << scalarsPerRank.I1[this->globalRank]; break;
case ncclUint8: ss << scalarsPerRank.U1[this->globalRank]; break;
case ncclInt32: ss << scalarsPerRank.I4[this->globalRank]; break;
case ncclUint32: ss << scalarsPerRank.U4[this->globalRank]; break;
case ncclInt64: ss << scalarsPerRank.I8[this->globalRank]; break;
case ncclUint64: ss << scalarsPerRank.U8[this->globalRank]; break;
case ncclFloat32: ss << scalarsPerRank.F4[this->globalRank]; break;
case ncclFloat64: ss << scalarsPerRank.F8[this->globalRank]; break;
case ncclBfloat16: ss << scalarsPerRank.B2[this->globalRank]; break;
default: ss << "(UNKNOWN)";
}
ss << " ";
}
}
if (this->funcType == ncclCollBroadcast ||
this->funcType == ncclCollReduce ||
this->funcType == ncclCollGather ||
this->funcType == ncclCollScatter)
{
ss << "Root " << this->options.root << " ";
}
if (this->funcType == ncclCollSend ||
this->funcType == ncclCollRecv)
{
ss << "Peer " << this->options.root << " ";
}
ss << "#In: " << this->numInputElements;
ss << " #Out: " << this->numOutputElements;
return ss.str();
}
void CollectiveArgs::GetNumElementsForFuncType(ncclFunc_t const funcType,
int const N,
int const totalRanks,
int* numInputElements,
int* numOutputElements)
{
switch (funcType)
{
case ncclCollBroadcast:
case ncclCollReduce:
case ncclCollAllReduce:
*numInputElements = N;
*numOutputElements = N;
break;
case ncclCollGather:
case ncclCollAllGather:
*numInputElements = N;
*numOutputElements = totalRanks * N;
break;
case ncclCollScatter:
case ncclCollReduceScatter:
*numInputElements = totalRanks * N;
*numOutputElements = N;
break;
case ncclCollAllToAll:
*numInputElements = totalRanks * N;
*numOutputElements = totalRanks * N;
break;
default:
*numInputElements = N;
*numOutputElements = N;
break;
}
}
bool CollectiveArgs::UsesReduce(ncclFunc_t const funcType)
{
return (funcType == ncclCollReduce ||
funcType == ncclCollAllReduce ||
funcType == ncclCollReduceScatter);
}
bool CollectiveArgs::UsesRoot(ncclFunc_t const funcType)
{
return (funcType == ncclCollBroadcast ||
funcType == ncclCollReduce ||
funcType == ncclCollGather ||
funcType == ncclCollScatter);
}
}
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