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https://develop.openfoam.com/Development/openfoam.git
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INT: Integration of Mattijs' collocated parallel IO additions
Original commit message:
------------------------
Parallel IO: New collated file format
When an OpenFOAM simulation runs in parallel, the data for decomposed fields and
mesh(es) has historically been stored in multiple files within separate
directories for each processor. Processor directories are named 'processorN',
where N is the processor number.
This commit introduces an alternative "collated" file format where the data for
each decomposed field (and mesh) is collated into a single file, which is
written and read on the master processor. The files are stored in a single
directory named 'processors'.
The new format produces significantly fewer files - one per field, instead of N
per field. For large parallel cases, this avoids the restriction on the number
of open files imposed by the operating system limits.
The file writing can be threaded allowing the simulation to continue running
while the data is being written to file. NFS (Network File System) is not
needed when using the the collated format and additionally, there is an option
to run without NFS with the original uncollated approach, known as
"masterUncollated".
The controls for the file handling are in the OptimisationSwitches of
etc/controlDict:
OptimisationSwitches
{
...
//- Parallel IO file handler
// uncollated (default), collated or masterUncollated
fileHandler uncollated;
//- collated: thread buffer size for queued file writes.
// If set to 0 or not sufficient for the file size threading is not used.
// Default: 2e9
maxThreadFileBufferSize 2e9;
//- masterUncollated: non-blocking buffer size.
// If the file exceeds this buffer size scheduled transfer is used.
// Default: 2e9
maxMasterFileBufferSize 2e9;
}
When using the collated file handling, memory is allocated for the data in the
thread. maxThreadFileBufferSize sets the maximum size of memory in bytes that
is allocated. If the data exceeds this size, the write does not use threading.
When using the masterUncollated file handling, non-blocking MPI communication
requires a sufficiently large memory buffer on the master node.
maxMasterFileBufferSize sets the maximum size in bytes of the buffer. If the
data exceeds this size, the system uses scheduled communication.
The installation defaults for the fileHandler choice, maxThreadFileBufferSize
and maxMasterFileBufferSize (set in etc/controlDict) can be over-ridden within
the case controlDict file, like other parameters. Additionally the fileHandler
can be set by:
- the "-fileHandler" command line argument;
- a FOAM_FILEHANDLER environment variable.
A foamFormatConvert utility allows users to convert files between the collated
and uncollated formats, e.g.
mpirun -np 2 foamFormatConvert -parallel -fileHandler uncollated
An example case demonstrating the file handling methods is provided in:
$FOAM_TUTORIALS/IO/fileHandling
The work was undertaken by Mattijs Janssens, in collaboration with Henry Weller.
This commit is contained in:
Andrew Heather
@ -0,0 +1,921 @@
|
||||
/*---------------------------------------------------------------------------*\
|
||||
========= |
|
||||
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
||||
\\ / O peration |
|
||||
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
|
||||
\\/ 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 3 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, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
\*---------------------------------------------------------------------------*/
|
||||
|
||||
#include "decomposedBlockData.H"
|
||||
#include "OPstream.H"
|
||||
#include "IPstream.H"
|
||||
#include "PstreamBuffers.H"
|
||||
#include "OFstream.H"
|
||||
#include "IFstream.H"
|
||||
#include "IStringStream.H"
|
||||
#include "dictionary.H"
|
||||
#include <sys/time.h>
|
||||
#include "objectRegistry.H"
|
||||
|
||||
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
|
||||
|
||||
namespace Foam
|
||||
{
|
||||
defineTypeNameAndDebug(decomposedBlockData, 0);
|
||||
}
|
||||
|
||||
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
|
||||
|
||||
Foam::decomposedBlockData::decomposedBlockData
|
||||
(
|
||||
const label comm,
|
||||
const IOobject& io,
|
||||
const UPstream::commsTypes commsType
|
||||
)
|
||||
:
|
||||
regIOobject(io),
|
||||
commsType_(commsType),
|
||||
comm_(comm)
|
||||
{
|
||||
// Temporary warning
|
||||
if (io.readOpt() == IOobject::MUST_READ_IF_MODIFIED)
|
||||
{
|
||||
WarningInFunction
|
||||
<< "decomposedBlockData " << name()
|
||||
<< " constructed with IOobject::MUST_READ_IF_MODIFIED"
|
||||
" but decomposedBlockData does not support automatic rereading."
|
||||
<< endl;
|
||||
}
|
||||
if
|
||||
(
|
||||
(
|
||||
io.readOpt() == IOobject::MUST_READ
|
||||
|| io.readOpt() == IOobject::MUST_READ_IF_MODIFIED
|
||||
)
|
||||
|| (io.readOpt() == IOobject::READ_IF_PRESENT && headerOk())
|
||||
)
|
||||
{
|
||||
read();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Foam::decomposedBlockData::decomposedBlockData
|
||||
(
|
||||
const label comm,
|
||||
const IOobject& io,
|
||||
const UList<char>& list,
|
||||
const UPstream::commsTypes commsType
|
||||
)
|
||||
:
|
||||
regIOobject(io),
|
||||
commsType_(commsType),
|
||||
comm_(comm)
|
||||
{
|
||||
// Temporary warning
|
||||
if (io.readOpt() == IOobject::MUST_READ_IF_MODIFIED)
|
||||
{
|
||||
WarningInFunction
|
||||
<< "decomposedBlockData " << name()
|
||||
<< " constructed with IOobject::MUST_READ_IF_MODIFIED"
|
||||
" but decomposedBlockData does not support automatic rereading."
|
||||
<< endl;
|
||||
}
|
||||
|
||||
if
|
||||
(
|
||||
(
|
||||
io.readOpt() == IOobject::MUST_READ
|
||||
|| io.readOpt() == IOobject::MUST_READ_IF_MODIFIED
|
||||
)
|
||||
|| (io.readOpt() == IOobject::READ_IF_PRESENT && headerOk())
|
||||
)
|
||||
{
|
||||
read();
|
||||
}
|
||||
else
|
||||
{
|
||||
List<char>::operator=(list);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Foam::decomposedBlockData::decomposedBlockData
|
||||
(
|
||||
const label comm,
|
||||
const IOobject& io,
|
||||
const Xfer<List<char>>& list,
|
||||
const UPstream::commsTypes commsType
|
||||
)
|
||||
:
|
||||
regIOobject(io),
|
||||
commsType_(commsType),
|
||||
comm_(comm)
|
||||
{
|
||||
// Temporary warning
|
||||
if (io.readOpt() == IOobject::MUST_READ_IF_MODIFIED)
|
||||
{
|
||||
WarningInFunction
|
||||
<< "decomposedBlockData " << name()
|
||||
<< " constructed with IOobject::MUST_READ_IF_MODIFIED"
|
||||
" but decomposedBlockData does not support automatic rereading."
|
||||
<< endl;
|
||||
}
|
||||
|
||||
List<char>::transfer(list());
|
||||
|
||||
if
|
||||
(
|
||||
(
|
||||
io.readOpt() == IOobject::MUST_READ
|
||||
|| io.readOpt() == IOobject::MUST_READ_IF_MODIFIED
|
||||
)
|
||||
|| (io.readOpt() == IOobject::READ_IF_PRESENT && headerOk())
|
||||
)
|
||||
{
|
||||
read();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * * //
|
||||
|
||||
Foam::decomposedBlockData::~decomposedBlockData()
|
||||
{}
|
||||
|
||||
|
||||
// * * * * * * * * * * * * * * * Members Functions * * * * * * * * * * * * * //
|
||||
|
||||
bool Foam::decomposedBlockData::readMasterHeader(IOobject& io, Istream& is)
|
||||
{
|
||||
if (debug)
|
||||
{
|
||||
Pout<< "decomposedBlockData::readMasterHeader:"
|
||||
<< " stream:" << is.name() << endl;
|
||||
}
|
||||
|
||||
// Master-only reading of header
|
||||
is.fatalCheck("read(Istream&)");
|
||||
|
||||
List<char> data(is);
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
string buf(data.begin(), data.size());
|
||||
IStringStream str(is.name(), buf);
|
||||
|
||||
return io.readHeader(str);
|
||||
}
|
||||
|
||||
|
||||
void Foam::decomposedBlockData::writeHeader
|
||||
(
|
||||
Ostream& os,
|
||||
const IOstream::versionNumber version,
|
||||
const IOstream::streamFormat format,
|
||||
const word& type,
|
||||
const string& note,
|
||||
const fileName& location,
|
||||
const word& name
|
||||
)
|
||||
{
|
||||
IOobject::writeBanner(os)
|
||||
<< "FoamFile\n{\n"
|
||||
<< " version " << version << ";\n"
|
||||
<< " format " << format << ";\n"
|
||||
<< " class " << type << ";\n";
|
||||
if (note.size())
|
||||
{
|
||||
os << " note " << note << ";\n";
|
||||
}
|
||||
|
||||
if (location.size())
|
||||
{
|
||||
os << " location " << location << ";\n";
|
||||
}
|
||||
|
||||
os << " object " << name << ";\n"
|
||||
<< "}" << nl;
|
||||
|
||||
IOobject::writeDivider(os) << nl;
|
||||
}
|
||||
|
||||
|
||||
Foam::autoPtr<Foam::ISstream> Foam::decomposedBlockData::readBlock
|
||||
(
|
||||
const label blocki,
|
||||
Istream& is,
|
||||
IOobject& headerIO
|
||||
)
|
||||
{
|
||||
if (debug)
|
||||
{
|
||||
Pout<< "decomposedBlockData::readBlock:"
|
||||
<< " stream:" << is.name() << " attempt to read block " << blocki
|
||||
<< endl;
|
||||
}
|
||||
|
||||
is.fatalCheck("read(Istream&)");
|
||||
|
||||
List<char> data;
|
||||
autoPtr<ISstream> realIsPtr;
|
||||
|
||||
if (blocki == 0)
|
||||
{
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
string buf(data.begin(), data.size());
|
||||
realIsPtr = new IStringStream(is.name(), buf);
|
||||
|
||||
// Read header
|
||||
if (!headerIO.readHeader(realIsPtr()))
|
||||
{
|
||||
FatalIOErrorInFunction(realIsPtr())
|
||||
<< "problem while reading header for object "
|
||||
<< is.name() << exit(FatalIOError);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Read master for header
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
IOstream::versionNumber ver(IOstream::currentVersion);
|
||||
IOstream::streamFormat fmt;
|
||||
{
|
||||
string buf(data.begin(), data.size());
|
||||
IStringStream headerStream(is.name(), buf);
|
||||
|
||||
// Read header
|
||||
if (!headerIO.readHeader(headerStream))
|
||||
{
|
||||
FatalIOErrorInFunction(headerStream)
|
||||
<< "problem while reading header for object "
|
||||
<< is.name() << exit(FatalIOError);
|
||||
}
|
||||
ver = headerStream.version();
|
||||
fmt = headerStream.format();
|
||||
}
|
||||
|
||||
for (label i = 1; i < blocki+1; i++)
|
||||
{
|
||||
// Read data, override old data
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
}
|
||||
string buf(data.begin(), data.size());
|
||||
realIsPtr = new IStringStream(is.name(), buf);
|
||||
|
||||
// Apply master stream settings to realIsPtr
|
||||
realIsPtr().format(fmt);
|
||||
realIsPtr().version(ver);
|
||||
}
|
||||
return realIsPtr;
|
||||
}
|
||||
|
||||
|
||||
bool Foam::decomposedBlockData::readBlocks
|
||||
(
|
||||
const label comm,
|
||||
autoPtr<ISstream>& isPtr,
|
||||
List<char>& data,
|
||||
const UPstream::commsTypes commsType
|
||||
)
|
||||
{
|
||||
if (debug)
|
||||
{
|
||||
Pout<< "decomposedBlockData::readBlocks:"
|
||||
<< " stream:" << (isPtr.valid() ? isPtr().name() : "invalid")
|
||||
<< " commsType:" << Pstream::commsTypeNames[commsType]
|
||||
<< " comm:" << comm << endl;
|
||||
}
|
||||
|
||||
bool ok = false;
|
||||
|
||||
if (commsType == UPstream::commsTypes::scheduled)
|
||||
{
|
||||
if (UPstream::master(comm))
|
||||
{
|
||||
Istream& is = isPtr();
|
||||
is.fatalCheck("read(Istream&)");
|
||||
|
||||
// Read master data
|
||||
{
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
}
|
||||
|
||||
// Read slave data
|
||||
for
|
||||
(
|
||||
label proci = 1;
|
||||
proci < UPstream::nProcs(comm);
|
||||
proci++
|
||||
)
|
||||
{
|
||||
List<char> elems(is);
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
OPstream os
|
||||
(
|
||||
UPstream::commsTypes::scheduled,
|
||||
proci,
|
||||
0,
|
||||
UPstream::msgType(),
|
||||
comm
|
||||
);
|
||||
os << elems;
|
||||
}
|
||||
|
||||
ok = is.good();
|
||||
}
|
||||
else
|
||||
{
|
||||
IPstream is
|
||||
(
|
||||
UPstream::commsTypes::scheduled,
|
||||
UPstream::masterNo(),
|
||||
0,
|
||||
UPstream::msgType(),
|
||||
comm
|
||||
);
|
||||
is >> data;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
PstreamBuffers pBufs
|
||||
(
|
||||
UPstream::commsTypes::nonBlocking,
|
||||
UPstream::msgType(),
|
||||
comm
|
||||
);
|
||||
|
||||
if (UPstream::master(comm))
|
||||
{
|
||||
Istream& is = isPtr();
|
||||
is.fatalCheck("read(Istream&)");
|
||||
|
||||
// Read master data
|
||||
{
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
}
|
||||
|
||||
// Read slave data
|
||||
for
|
||||
(
|
||||
label proci = 1;
|
||||
proci < UPstream::nProcs(comm);
|
||||
proci++
|
||||
)
|
||||
{
|
||||
List<char> elems(is);
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
UOPstream os(proci, pBufs);
|
||||
os << elems;
|
||||
}
|
||||
}
|
||||
|
||||
labelList recvSizes;
|
||||
pBufs.finishedSends(recvSizes);
|
||||
|
||||
if (!UPstream::master(comm))
|
||||
{
|
||||
UIPstream is(UPstream::masterNo(), pBufs);
|
||||
is >> data;
|
||||
}
|
||||
}
|
||||
|
||||
Pstream::scatter(ok, Pstream::msgType(), comm);
|
||||
|
||||
return ok;
|
||||
}
|
||||
|
||||
|
||||
Foam::autoPtr<Foam::ISstream> Foam::decomposedBlockData::readBlocks
|
||||
(
|
||||
const label comm,
|
||||
const fileName& fName,
|
||||
autoPtr<ISstream>& isPtr,
|
||||
IOobject& headerIO,
|
||||
const UPstream::commsTypes commsType
|
||||
)
|
||||
{
|
||||
if (debug)
|
||||
{
|
||||
Pout<< "decomposedBlockData::readBlocks:"
|
||||
<< " stream:" << (isPtr.valid() ? isPtr().name() : "invalid")
|
||||
<< " commsType:" << Pstream::commsTypeNames[commsType] << endl;
|
||||
}
|
||||
|
||||
bool ok = false;
|
||||
|
||||
List<char> data;
|
||||
autoPtr<ISstream> realIsPtr;
|
||||
|
||||
if (commsType == UPstream::commsTypes::scheduled)
|
||||
{
|
||||
if (UPstream::master(comm))
|
||||
{
|
||||
Istream& is = isPtr();
|
||||
is.fatalCheck("read(Istream&)");
|
||||
|
||||
// Read master data
|
||||
{
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
string buf(data.begin(), data.size());
|
||||
realIsPtr = new IStringStream(fName, buf);
|
||||
|
||||
// Read header
|
||||
if (!headerIO.readHeader(realIsPtr()))
|
||||
{
|
||||
FatalIOErrorInFunction(realIsPtr())
|
||||
<< "problem while reading header for object "
|
||||
<< is.name() << exit(FatalIOError);
|
||||
}
|
||||
}
|
||||
|
||||
// Read slave data
|
||||
for
|
||||
(
|
||||
label proci = 1;
|
||||
proci < UPstream::nProcs(comm);
|
||||
proci++
|
||||
)
|
||||
{
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
OPstream os
|
||||
(
|
||||
UPstream::commsTypes::scheduled,
|
||||
proci,
|
||||
0,
|
||||
UPstream::msgType(),
|
||||
comm
|
||||
);
|
||||
os << data;
|
||||
}
|
||||
|
||||
ok = is.good();
|
||||
}
|
||||
else
|
||||
{
|
||||
IPstream is
|
||||
(
|
||||
UPstream::commsTypes::scheduled,
|
||||
UPstream::masterNo(),
|
||||
0,
|
||||
UPstream::msgType(),
|
||||
comm
|
||||
);
|
||||
is >> data;
|
||||
|
||||
string buf(data.begin(), data.size());
|
||||
realIsPtr = new IStringStream(fName, buf);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
PstreamBuffers pBufs
|
||||
(
|
||||
UPstream::commsTypes::nonBlocking,
|
||||
UPstream::msgType(),
|
||||
comm
|
||||
);
|
||||
|
||||
if (UPstream::master(comm))
|
||||
{
|
||||
Istream& is = isPtr();
|
||||
is.fatalCheck("read(Istream&)");
|
||||
|
||||
// Read master data
|
||||
{
|
||||
is >> data;
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
string buf(data.begin(), data.size());
|
||||
realIsPtr = new IStringStream(fName, buf);
|
||||
|
||||
// Read header
|
||||
if (!headerIO.readHeader(realIsPtr()))
|
||||
{
|
||||
FatalIOErrorInFunction(realIsPtr())
|
||||
<< "problem while reading header for object "
|
||||
<< is.name() << exit(FatalIOError);
|
||||
}
|
||||
}
|
||||
|
||||
// Read slave data
|
||||
for
|
||||
(
|
||||
label proci = 1;
|
||||
proci < UPstream::nProcs(comm);
|
||||
proci++
|
||||
)
|
||||
{
|
||||
List<char> elems(is);
|
||||
is.fatalCheck("read(Istream&) : reading entry");
|
||||
|
||||
UOPstream os(proci, pBufs);
|
||||
os << elems;
|
||||
}
|
||||
|
||||
ok = is.good();
|
||||
}
|
||||
|
||||
labelList recvSizes;
|
||||
pBufs.finishedSends(recvSizes);
|
||||
|
||||
if (!UPstream::master(comm))
|
||||
{
|
||||
UIPstream is(UPstream::masterNo(), pBufs);
|
||||
is >> data;
|
||||
|
||||
string buf(data.begin(), data.size());
|
||||
realIsPtr = new IStringStream(fName, buf);
|
||||
}
|
||||
}
|
||||
|
||||
Pstream::scatter(ok, Pstream::msgType(), comm);
|
||||
|
||||
// version
|
||||
string versionString(realIsPtr().version().str());
|
||||
Pstream::scatter(versionString, Pstream::msgType(), comm);
|
||||
realIsPtr().version(IStringStream(versionString)());
|
||||
|
||||
// stream
|
||||
{
|
||||
OStringStream os;
|
||||
os << realIsPtr().format();
|
||||
string formatString(os.str());
|
||||
Pstream::scatter(formatString, Pstream::msgType(), comm);
|
||||
realIsPtr().format(formatString);
|
||||
}
|
||||
|
||||
word name(headerIO.name());
|
||||
Pstream::scatter(name, Pstream::msgType(), comm);
|
||||
headerIO.rename(name);
|
||||
Pstream::scatter(headerIO.headerClassName(), Pstream::msgType(), comm);
|
||||
Pstream::scatter(headerIO.note(), Pstream::msgType(), comm);
|
||||
//Pstream::scatter(headerIO.instance(), Pstream::msgType(), comm);
|
||||
//Pstream::scatter(headerIO.local(), Pstream::msgType(), comm);
|
||||
|
||||
return realIsPtr;
|
||||
}
|
||||
|
||||
|
||||
bool Foam::decomposedBlockData::writeBlocks
|
||||
(
|
||||
const label comm,
|
||||
autoPtr<OSstream>& osPtr,
|
||||
List<std::streamoff>& start,
|
||||
const UList<char>& data,
|
||||
const UPstream::commsTypes commsType,
|
||||
const bool syncReturnState
|
||||
)
|
||||
{
|
||||
if (debug)
|
||||
{
|
||||
Pout<< "decomposedBlockData::writeBlocks:"
|
||||
<< " stream:" << (osPtr.valid() ? osPtr().name() : "invalid")
|
||||
<< " data:" << data.size()
|
||||
<< " commsType:" << Pstream::commsTypeNames[commsType] << endl;
|
||||
}
|
||||
|
||||
bool ok = true;
|
||||
|
||||
labelList recvSizes(Pstream::nProcs(comm));
|
||||
recvSizes[Pstream::myProcNo(comm)] = data.byteSize();
|
||||
Pstream::gatherList(recvSizes, Pstream::msgType(), comm);
|
||||
|
||||
if (commsType == UPstream::commsTypes::scheduled)
|
||||
{
|
||||
if (UPstream::master(comm))
|
||||
{
|
||||
start.setSize(UPstream::nProcs(comm));
|
||||
|
||||
OSstream& os = osPtr();
|
||||
|
||||
// Write master data
|
||||
{
|
||||
os << nl << "// Processor" << UPstream::masterNo() << nl;
|
||||
start[UPstream::masterNo()] = os.stdStream().tellp();
|
||||
os << data;
|
||||
}
|
||||
// Write slaves
|
||||
List<char> elems;
|
||||
for (label proci = 1; proci < UPstream::nProcs(comm); proci++)
|
||||
{
|
||||
elems.setSize(recvSizes[proci]);
|
||||
IPstream::read
|
||||
(
|
||||
UPstream::commsTypes::scheduled,
|
||||
proci,
|
||||
elems.begin(),
|
||||
elems.size(),
|
||||
Pstream::msgType(),
|
||||
comm
|
||||
);
|
||||
|
||||
os << nl << nl << "// Processor" << proci << nl;
|
||||
start[proci] = os.stdStream().tellp();
|
||||
os << elems;
|
||||
}
|
||||
|
||||
ok = os.good();
|
||||
}
|
||||
else
|
||||
{
|
||||
UOPstream::write
|
||||
(
|
||||
UPstream::commsTypes::scheduled,
|
||||
UPstream::masterNo(),
|
||||
data.begin(),
|
||||
data.byteSize(),
|
||||
Pstream::msgType(),
|
||||
comm
|
||||
);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (debug)
|
||||
{
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv, nullptr);
|
||||
Pout<< "Starting sending at:"
|
||||
<< 1.0*tv.tv_sec+tv.tv_usec/1e6 << " s"
|
||||
<< Foam::endl;
|
||||
}
|
||||
|
||||
|
||||
label startOfRequests = Pstream::nRequests();
|
||||
|
||||
if (!UPstream::master(comm))
|
||||
{
|
||||
UOPstream::write
|
||||
(
|
||||
UPstream::commsTypes::nonBlocking,
|
||||
UPstream::masterNo(),
|
||||
data.begin(),
|
||||
data.byteSize(),
|
||||
Pstream::msgType(),
|
||||
comm
|
||||
);
|
||||
Pstream::waitRequests(startOfRequests);
|
||||
}
|
||||
else
|
||||
{
|
||||
List<List<char>> recvBufs(Pstream::nProcs(comm));
|
||||
for (label proci = 1; proci < UPstream::nProcs(comm); proci++)
|
||||
{
|
||||
recvBufs[proci].setSize(recvSizes[proci]);
|
||||
UIPstream::read
|
||||
(
|
||||
UPstream::commsTypes::nonBlocking,
|
||||
proci,
|
||||
recvBufs[proci].begin(),
|
||||
recvSizes[proci],
|
||||
Pstream::msgType(),
|
||||
comm
|
||||
);
|
||||
}
|
||||
|
||||
if (debug)
|
||||
{
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv, nullptr);
|
||||
Pout<< "Starting master-only writing at:"
|
||||
<< 1.0*tv.tv_sec+tv.tv_usec/1e6 << " s"
|
||||
<< Foam::endl;
|
||||
}
|
||||
|
||||
start.setSize(UPstream::nProcs(comm));
|
||||
|
||||
OSstream& os = osPtr();
|
||||
|
||||
// Write master data
|
||||
{
|
||||
os << nl << "// Processor" << UPstream::masterNo() << nl;
|
||||
start[UPstream::masterNo()] = os.stdStream().tellp();
|
||||
os << data;
|
||||
}
|
||||
|
||||
if (debug)
|
||||
{
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv, nullptr);
|
||||
Pout<< "Starting slave writing at:"
|
||||
<< 1.0*tv.tv_sec+tv.tv_usec/1e6 << " s"
|
||||
<< Foam::endl;
|
||||
}
|
||||
|
||||
// Write slaves
|
||||
for (label proci = 1; proci < UPstream::nProcs(comm); proci++)
|
||||
{
|
||||
os << nl << nl << "// Processor" << proci << nl;
|
||||
start[proci] = os.stdStream().tellp();
|
||||
|
||||
if (Pstream::finishedRequest(startOfRequests+proci-1))
|
||||
{
|
||||
os << recvBufs[proci];
|
||||
}
|
||||
}
|
||||
|
||||
Pstream::resetRequests(startOfRequests);
|
||||
|
||||
ok = os.good();
|
||||
}
|
||||
}
|
||||
if (debug)
|
||||
{
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv, nullptr);
|
||||
Pout<< "Finished master-only writing at:"
|
||||
<< 1.0*tv.tv_sec+tv.tv_usec/1e6 << " s"
|
||||
<< Foam::endl;
|
||||
}
|
||||
|
||||
if (syncReturnState)
|
||||
{
|
||||
//- Enable to get synchronised error checking. Is the one that keeps
|
||||
// slaves as slow as the master (which does all the writing)
|
||||
Pstream::scatter(ok, Pstream::msgType(), comm);
|
||||
}
|
||||
|
||||
return ok;
|
||||
}
|
||||
|
||||
|
||||
bool Foam::decomposedBlockData::read()
|
||||
{
|
||||
autoPtr<ISstream> isPtr;
|
||||
fileName objPath(fileHandler().filePath(false, *this, word::null));
|
||||
if (UPstream::master(comm_))
|
||||
{
|
||||
isPtr.reset(new IFstream(objPath));
|
||||
IOobject::readHeader(isPtr());
|
||||
}
|
||||
|
||||
List<char>& data = *this;
|
||||
return readBlocks(comm_, isPtr, data, commsType_);
|
||||
}
|
||||
|
||||
|
||||
bool Foam::decomposedBlockData::writeData(Ostream& os) const
|
||||
{
|
||||
const List<char>& data = *this;
|
||||
|
||||
string str
|
||||
(
|
||||
reinterpret_cast<const char*>(data.cbegin()),
|
||||
data.byteSize()
|
||||
);
|
||||
|
||||
IOobject io(*this);
|
||||
if (Pstream::master())
|
||||
{
|
||||
IStringStream is(name(), str);
|
||||
io.readHeader(is);
|
||||
}
|
||||
|
||||
// Scatter header information
|
||||
|
||||
// version
|
||||
string versionString(os.version().str());
|
||||
Pstream::scatter(versionString);
|
||||
|
||||
// stream
|
||||
string formatString;
|
||||
{
|
||||
OStringStream os;
|
||||
os << os.format();
|
||||
formatString = os.str();
|
||||
Pstream::scatter(formatString);
|
||||
}
|
||||
|
||||
//word masterName(name());
|
||||
//Pstream::scatter(masterName);
|
||||
|
||||
Pstream::scatter(io.headerClassName());
|
||||
Pstream::scatter(io.note());
|
||||
//Pstream::scatter(io.instance(), Pstream::msgType(), comm);
|
||||
//Pstream::scatter(io.local(), Pstream::msgType(), comm);
|
||||
|
||||
fileName masterLocation(instance()/db().dbDir()/local());
|
||||
Pstream::scatter(masterLocation);
|
||||
|
||||
if (!Pstream::master())
|
||||
{
|
||||
writeHeader
|
||||
(
|
||||
os,
|
||||
IOstream::versionNumber(IStringStream(versionString)()),
|
||||
IOstream::formatEnum(formatString),
|
||||
io.headerClassName(),
|
||||
io.note(),
|
||||
masterLocation,
|
||||
name()
|
||||
);
|
||||
}
|
||||
|
||||
os.writeQuoted(str, false);
|
||||
|
||||
if (!Pstream::master())
|
||||
{
|
||||
IOobject::writeEndDivider(os);
|
||||
}
|
||||
|
||||
return os.good();
|
||||
}
|
||||
|
||||
|
||||
bool Foam::decomposedBlockData::writeObject
|
||||
(
|
||||
IOstream::streamFormat fmt,
|
||||
IOstream::versionNumber ver,
|
||||
IOstream::compressionType cmp,
|
||||
const bool valid
|
||||
) const
|
||||
{
|
||||
autoPtr<OSstream> osPtr;
|
||||
if (UPstream::master(comm_))
|
||||
{
|
||||
// Note: always write binary. These are strings so readable
|
||||
// anyway. They have already be tokenised on the sending side.
|
||||
osPtr.reset(new OFstream(objectPath(), IOstream::BINARY, ver, cmp));
|
||||
IOobject::writeHeader(osPtr());
|
||||
}
|
||||
List<std::streamoff> start;
|
||||
return writeBlocks(comm_, osPtr, start, *this, commsType_);
|
||||
}
|
||||
|
||||
|
||||
Foam::label Foam::decomposedBlockData::numBlocks(const fileName& fName)
|
||||
{
|
||||
label nBlocks = 0;
|
||||
|
||||
IFstream is(fName);
|
||||
is.fatalCheck("decomposedBlockData::numBlocks(const fileName&)");
|
||||
|
||||
if (!is.good())
|
||||
{
|
||||
return nBlocks;
|
||||
}
|
||||
|
||||
// Skip header
|
||||
token firstToken(is);
|
||||
|
||||
if
|
||||
(
|
||||
is.good()
|
||||
&& firstToken.isWord()
|
||||
&& firstToken.wordToken() == "FoamFile"
|
||||
)
|
||||
{
|
||||
dictionary headerDict(is);
|
||||
is.version(headerDict.lookup("version"));
|
||||
is.format(headerDict.lookup("format"));
|
||||
}
|
||||
|
||||
List<char> data;
|
||||
while (is.good())
|
||||
{
|
||||
token sizeToken(is);
|
||||
if (!sizeToken.isLabel())
|
||||
{
|
||||
return nBlocks;
|
||||
}
|
||||
is.putBack(sizeToken);
|
||||
|
||||
is >> data;
|
||||
nBlocks++;
|
||||
}
|
||||
|
||||
return nBlocks;
|
||||
}
|
||||
|
||||
|
||||
// ************************************************************************* //
|
||||
Reference in New Issue
Block a user