mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
493 lines
13 KiB
C
493 lines
13 KiB
C
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
|
|
\\/ M anipulation |
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of OpenFOAM.
|
|
|
|
OpenFOAM is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by the
|
|
Free Software Foundation; either version 2 of the License, or (at your
|
|
option) any later version.
|
|
|
|
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with OpenFOAM; if not, write to the Free Software Foundation,
|
|
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "mpi.h"
|
|
|
|
#include "UPstream.H"
|
|
#include "PstreamReduceOps.H"
|
|
#include "OSspecific.H"
|
|
#include "PstreamGlobals.H"
|
|
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
#include <csignal>
|
|
|
|
#if defined(WM_SP)
|
|
# define MPI_SCALAR MPI_FLOAT
|
|
#elif defined(WM_DP)
|
|
# define MPI_SCALAR MPI_DOUBLE
|
|
#endif
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
// NOTE:
|
|
// valid parallel options vary between implementations, but flag common ones.
|
|
// if they are not removed by MPI_Init(), the subsequent argument processing
|
|
// will notice that they are wrong
|
|
void Foam::UPstream::addValidParOptions(HashTable<string>& validParOptions)
|
|
{
|
|
validParOptions.insert("np", "");
|
|
validParOptions.insert("p4pg", "PI file");
|
|
validParOptions.insert("p4wd", "directory");
|
|
validParOptions.insert("p4amslave", "");
|
|
validParOptions.insert("p4yourname", "hostname");
|
|
validParOptions.insert("GAMMANP", "number of instances");
|
|
validParOptions.insert("machinefile", "machine file");
|
|
}
|
|
|
|
|
|
bool Foam::UPstream::init(int& argc, char**& argv)
|
|
{
|
|
MPI_Init(&argc, &argv);
|
|
|
|
int numprocs;
|
|
MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
|
|
MPI_Comm_rank(MPI_COMM_WORLD, &myProcNo_);
|
|
|
|
if (numprocs <= 1)
|
|
{
|
|
FatalErrorIn("UPstream::init(int& argc, char**& argv)")
|
|
<< "bool IPstream::init(int& argc, char**& argv) : "
|
|
"attempt to run parallel on 1 processor"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
|
|
procIDs_.setSize(numprocs);
|
|
|
|
forAll(procIDs_, procNo)
|
|
{
|
|
procIDs_[procNo] = procNo;
|
|
}
|
|
|
|
setParRun();
|
|
|
|
# ifndef SGIMPI
|
|
string bufferSizeName = getEnv("MPI_BUFFER_SIZE");
|
|
|
|
if (bufferSizeName.size())
|
|
{
|
|
int bufferSize = atoi(bufferSizeName.c_str());
|
|
|
|
if (bufferSize)
|
|
{
|
|
MPI_Buffer_attach(new char[bufferSize], bufferSize);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
FatalErrorIn("UPstream::init(int& argc, char**& argv)")
|
|
<< "UPstream::init(int& argc, char**& argv) : "
|
|
<< "environment variable MPI_BUFFER_SIZE not defined"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
# endif
|
|
|
|
int processorNameLen;
|
|
char processorName[MPI_MAX_PROCESSOR_NAME];
|
|
|
|
MPI_Get_processor_name(processorName, &processorNameLen);
|
|
|
|
//signal(SIGABRT, stop);
|
|
|
|
// Now that nprocs is known construct communication tables.
|
|
initCommunicationSchedule();
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void Foam::UPstream::exit(int errnum)
|
|
{
|
|
# ifndef SGIMPI
|
|
int size;
|
|
char* buff;
|
|
MPI_Buffer_detach(&buff, &size);
|
|
delete[] buff;
|
|
# endif
|
|
|
|
if (PstreamGlobals::outstandingRequests_.size())
|
|
{
|
|
label n = PstreamGlobals::outstandingRequests_.size();
|
|
PstreamGlobals::outstandingRequests_.clear();
|
|
|
|
WarningIn("UPstream::exit(int)")
|
|
<< "There are still " << n << " outstanding MPI_Requests." << endl
|
|
<< "This means that your code exited before doing a"
|
|
<< " UPstream::waitRequests()." << endl
|
|
<< "This should not happen for a normal code exit."
|
|
<< endl;
|
|
}
|
|
|
|
if (errnum == 0)
|
|
{
|
|
MPI_Finalize();
|
|
::exit(errnum);
|
|
}
|
|
else
|
|
{
|
|
MPI_Abort(MPI_COMM_WORLD, errnum);
|
|
}
|
|
}
|
|
|
|
|
|
void Foam::UPstream::abort()
|
|
{
|
|
MPI_Abort(MPI_COMM_WORLD, 1);
|
|
}
|
|
|
|
|
|
void Foam::reduce(scalar& Value, const sumOp<scalar>& bop)
|
|
{
|
|
if (!UPstream::parRun())
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (UPstream::nProcs() <= UPstream::nProcsSimpleSum)
|
|
{
|
|
if (UPstream::master())
|
|
{
|
|
for
|
|
(
|
|
int slave=UPstream::firstSlave();
|
|
slave<=UPstream::lastSlave();
|
|
slave++
|
|
)
|
|
{
|
|
scalar value;
|
|
|
|
if
|
|
(
|
|
MPI_Recv
|
|
(
|
|
&value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(slave),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD,
|
|
MPI_STATUS_IGNORE
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Recv failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
|
|
Value = bop(Value, value);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if
|
|
(
|
|
MPI_Send
|
|
(
|
|
&Value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(UPstream::masterNo()),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Send failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
}
|
|
|
|
|
|
if (UPstream::master())
|
|
{
|
|
for
|
|
(
|
|
int slave=UPstream::firstSlave();
|
|
slave<=UPstream::lastSlave();
|
|
slave++
|
|
)
|
|
{
|
|
if
|
|
(
|
|
MPI_Send
|
|
(
|
|
&Value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(slave),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Send failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if
|
|
(
|
|
MPI_Recv
|
|
(
|
|
&Value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(UPstream::masterNo()),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD,
|
|
MPI_STATUS_IGNORE
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Recv failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
scalar sum;
|
|
MPI_Allreduce(&Value, &sum, 1, MPI_SCALAR, MPI_SUM, MPI_COMM_WORLD);
|
|
Value = sum;
|
|
|
|
/*
|
|
int myProcNo = UPstream::myProcNo();
|
|
int nProcs = UPstream::nProcs();
|
|
|
|
//
|
|
// receive from children
|
|
//
|
|
int level = 1;
|
|
int thisLevelOffset = 2;
|
|
int childLevelOffset = thisLevelOffset/2;
|
|
int childProcId = 0;
|
|
|
|
while
|
|
(
|
|
(childLevelOffset < nProcs)
|
|
&& (myProcNo % thisLevelOffset) == 0
|
|
)
|
|
{
|
|
childProcId = myProcNo + childLevelOffset;
|
|
|
|
scalar value;
|
|
|
|
if (childProcId < nProcs)
|
|
{
|
|
if
|
|
(
|
|
MPI_Recv
|
|
(
|
|
&value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(childProcId),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD,
|
|
MPI_STATUS_IGNORE
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Recv failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
|
|
Value = bop(Value, value);
|
|
}
|
|
|
|
level++;
|
|
thisLevelOffset <<= 1;
|
|
childLevelOffset = thisLevelOffset/2;
|
|
}
|
|
|
|
//
|
|
// send and receive from parent
|
|
//
|
|
if (!UPstream::master())
|
|
{
|
|
int parentId = myProcNo - (myProcNo % thisLevelOffset);
|
|
|
|
if
|
|
(
|
|
MPI_Send
|
|
(
|
|
&Value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(parentId),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Send failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
|
|
if
|
|
(
|
|
MPI_Recv
|
|
(
|
|
&Value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(parentId),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD,
|
|
MPI_STATUS_IGNORE
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Recv failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
}
|
|
|
|
|
|
//
|
|
// distribute to my children
|
|
//
|
|
level--;
|
|
thisLevelOffset >>= 1;
|
|
childLevelOffset = thisLevelOffset/2;
|
|
|
|
while (level > 0)
|
|
{
|
|
childProcId = myProcNo + childLevelOffset;
|
|
|
|
if (childProcId < nProcs)
|
|
{
|
|
if
|
|
(
|
|
MPI_Send
|
|
(
|
|
&Value,
|
|
1,
|
|
MPI_SCALAR,
|
|
UPstream::procID(childProcId),
|
|
UPstream::msgType(),
|
|
MPI_COMM_WORLD
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"reduce(scalar& Value, const sumOp<scalar>& sumOp)"
|
|
) << "MPI_Send failed"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
}
|
|
|
|
level--;
|
|
thisLevelOffset >>= 1;
|
|
childLevelOffset = thisLevelOffset/2;
|
|
}
|
|
*/
|
|
}
|
|
}
|
|
|
|
|
|
void Foam::UPstream::waitRequests()
|
|
{
|
|
if (PstreamGlobals::outstandingRequests_.size())
|
|
{
|
|
if
|
|
(
|
|
MPI_Waitall
|
|
(
|
|
PstreamGlobals::outstandingRequests_.size(),
|
|
PstreamGlobals::outstandingRequests_.begin(),
|
|
MPI_STATUSES_IGNORE
|
|
)
|
|
)
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"UPstream::waitRequests()"
|
|
) << "MPI_Waitall returned with error" << Foam::endl;
|
|
}
|
|
|
|
PstreamGlobals::outstandingRequests_.clear();
|
|
}
|
|
}
|
|
|
|
|
|
bool Foam::UPstream::finishedRequest(const label i)
|
|
{
|
|
if (i >= PstreamGlobals::outstandingRequests_.size())
|
|
{
|
|
FatalErrorIn
|
|
(
|
|
"UPstream::finishedRequest(const label)"
|
|
) << "There are " << PstreamGlobals::outstandingRequests_.size()
|
|
<< " outstanding send requests and you are asking for i=" << i
|
|
<< nl
|
|
<< "Maybe you are mixing blocking/non-blocking comms?"
|
|
<< Foam::abort(FatalError);
|
|
}
|
|
|
|
int flag;
|
|
MPI_Test
|
|
(
|
|
&PstreamGlobals::outstandingRequests_[i],
|
|
&flag,
|
|
MPI_STATUS_IGNORE
|
|
);
|
|
|
|
return flag != 0;
|
|
}
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
// ************************************************************************* //
|