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Parallel IO worked on. I'm puzzled because I already thought I shook this out on MacOS + OpenMPI and then

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turned up problems on the BlueWaters Cray.

Gets 75MB/s from home filesystem on parallel configuration read. Need to make the RNG IO parallel,
and also to look at aggregating bigger writes for the parallel write.
Not sure what the home filesystem is.
This commit is contained in:
Peter Boyle
2016-02-21 08:03:21 -06:00
parent 40f2db9bc0
commit 6aeaf6f568
6 changed files with 160 additions and 80 deletions
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15
lib/parallelIO/NerscIO.h
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@ -345,17 +345,17 @@ static inline void readConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu,
if ( header.data_type == std::string("4D_SU3_GAUGE") ) {
if ( ieee32 || ieee32big ) {
// csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>, LorentzColour2x3F>
csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>, LorentzColour2x3F>
csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>, LorentzColour2x3F>
(Umu,file,Nersc3x2munger<LorentzColour2x3F,LorentzColourMatrix>(), offset,format);
}
if ( ieee64 || ieee64big ) {
// csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>, LorentzColour2x3D>
//csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>, LorentzColour2x3D>
csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>, LorentzColour2x3D>
(Umu,file,Nersc3x2munger<LorentzColour2x3D,LorentzColourMatrix>(),offset,format);
(Umu,file,Nersc3x2munger<LorentzColour2x3D,LorentzColourMatrix>(),offset,format);
}
} else if ( header.data_type == std::string("4D_SU3_GAUGE_3X3") ) {
if ( ieee32 || ieee32big ) {
// csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>,LorentzColourMatrixF>
//csum=BinaryIO::readObjectSerial<iLorentzColourMatrix<vsimd>,LorentzColourMatrixF>
csum=BinaryIO::readObjectParallel<iLorentzColourMatrix<vsimd>,LorentzColourMatrixF>
(Umu,file,NerscSimpleMunger<LorentzColourMatrixF,LorentzColourMatrix>(),offset,format);
}
@ -372,6 +372,7 @@ static inline void readConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu,
assert(fabs(clone.plaquette -header.plaquette ) < 1.0e-5 );
assert(fabs(clone.link_trace-header.link_trace) < 1.0e-6 );
assert(csum == header.checksum );
std::cout<<GridLogMessage <<"Read NERSC Configuration "<<file<< " and plaquette, link trace, and checksum agree"<<std::endl;
@ -419,6 +420,7 @@ static inline void writeConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu
std::string file1 = file+"para";
int offset1 = writeHeader(header,file1);
int csum1=BinaryIO::writeObjectParallel<vobj,fobj2D>(Umu,file1,munge,offset,header.floating_point);
//int csum1=BinaryIO::writeObjectSerial<vobj,fobj2D>(Umu,file1,munge,offset,header.floating_point);
std::cout << GridLogMessage << " TESTING PARALLEL WRITE offsets " << offset1 << " "<< offset << std::endl;
@ -433,7 +435,8 @@ static inline void writeConfiguration(Lattice<iLorentzColourMatrix<vsimd> > &Umu
NerscSimpleUnmunger<fobj3D,sobj> munge;
BinaryIO::Uint32Checksum<vobj,fobj3D>(Umu, munge,header.checksum);
offset = writeHeader(header,file);
csum=BinaryIO::writeObjectSerial<vobj,fobj3D>(Umu,file,munge,offset,header.floating_point);
// csum=BinaryIO::writeObjectSerial<vobj,fobj3D>(Umu,file,munge,offset,header.floating_point);
csum=BinaryIO::writeObjectParallel<vobj,fobj3D>(Umu,file,munge,offset,header.floating_point);
}
std::cout<<GridLogMessage <<"Written NERSC Configuration "<<file<< " checksum "<<std::hex<<csum<< std::dec<<" plaq "<< header.plaquette <<std::endl;
@ -507,6 +510,8 @@ static inline void readRNGState(GridSerialRNG &serial,GridParallelRNG & parallel
// munger is a function of <floating point, Real, data_type>
uint32_t csum=BinaryIO::readRNGSerial(serial,parallel,file,offset);
std::cerr<<" Csum "<< csum << " "<< header.checksum <<std::endl;
assert(csum == header.checksum );
std::cout<<GridLogMessage <<"Read NERSC RNG file "<<file<< " format "<< data_type <<std::endl;