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ENH: coded: allow for NFS skew

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This commit is contained in:
mattijs
2014-01-14 17:34:06 +00:00
parent 6e87c27f8e
commit d913e1c133
2 changed files with 83 additions and 3 deletions
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80
src/OpenFOAM/db/dynamicLibrary/codedBase/codedBase.C
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@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2011-2014 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -30,6 +30,15 @@ License
#include "dlLibraryTable.H"
#include "PstreamReduceOps.H"
#include "OSspecific.H"
#include "regIOobject.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
defineTypeNameAndDebug(codedBase, 0);
}
// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
@ -169,7 +178,9 @@ void Foam::codedBase::createLibrary
const dynamicCodeContext& context
) const
{
bool create = Pstream::master();
bool create =
Pstream::master()
|| (regIOobject::fileModificationSkew <= 0); // not NFS
if (create)
{
@ -206,6 +217,71 @@ void Foam::codedBase::createLibrary
// all processes must wait for compile to finish
if (regIOobject::fileModificationSkew > 0)
{
//- Since the library has only been compiled on the master the
// other nodes need to pick this library up through NFS
// We do this by just polling a few times using the
// fileModificationSkew.
const fileName libPath = dynCode.libPath();
off_t mySize = Foam::fileSize(libPath);
off_t masterSize = mySize;
Pstream::scatter(masterSize);
if (debug)
{
Pout<< endl<< "on processor " << Pstream::myProcNo()
<< " have masterSize:" << masterSize
<< " and localSize:" << mySize
<< endl;
}
if (mySize < masterSize)
{
if (debug)
{
Pout<< "Local file " << libPath
<< " not of same size (" << mySize
<< ") as master ("
<< masterSize << "). Waiting for "
<< regIOobject::fileModificationSkew
<< " seconds." << endl;
}
Foam::sleep(regIOobject::fileModificationSkew);
// Recheck local size
mySize = Foam::fileSize(libPath);
if (mySize < masterSize)
{
FatalIOErrorIn
(
"functionEntries::codeStream::execute(..)",
context.dict()
) << "Cannot read (NFS mounted) library " << nl
<< libPath << nl
<< "on processor " << Pstream::myProcNo()
<< " detected size " << mySize
<< " whereas master size is " << masterSize
<< " bytes." << nl
<< "If your case is not NFS mounted"
<< " (so distributed) set fileModificationSkew"
<< " to 0"
<< exit(FatalIOError);
}
}
if (debug)
{
Pout<< endl<< "on processor " << Pstream::myProcNo()
<< " after waiting: have masterSize:" << masterSize
<< " and localSize:" << mySize
<< endl;
}
}
reduce(create, orOp<bool>());
}