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resilient I/O fix

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This commit is contained in:
Antonin Portelli 2018-11-27 20:17:09 +00:00
parent 01e8cf5017
commit 49b934310b
1 changed files with 12 additions and 6 deletions
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18
Grid/parallelIO/BinaryIO.h
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@ -371,7 +371,7 @@ PARALLEL_CRITICAL
#endif
} else {
std::cout << GridLogMessage <<"IOobject: C++ read I/O " << file << " : "
<< iodata.size() * sizeof(fobj) << " bytes" << std::endl;
<< iodata.size() * sizeof(fobj) << " bytes and offset " << offset << std::endl;
std::ifstream fin;
fin.open(file, std::ios::binary | std::ios::in);
if (control & BINARYIO_MASTER_APPEND)
@ -583,7 +583,7 @@ PARALLEL_CRITICAL
typedef typename vobj::scalar_object sobj;
typedef typename vobj::Realified::scalar_type word; word w=0;
GridBase *grid = Umu._grid;
uint64_t lsites = grid->lSites();
uint64_t lsites = grid->lSites(), offsetCopy = offset;
int attemptsLeft = std::max(0, BinaryIO::latticeWriteMaxRetry);
bool checkWrite = (BinaryIO::latticeWriteMaxRetry >= 0);
@ -600,7 +600,6 @@ PARALLEL_CRITICAL
grid->Barrier();
timer.Stop();
while (attemptsLeft >= 0)
{
grid->Barrier();
@ -610,14 +609,21 @@ PARALLEL_CRITICAL
{
std::vector<fobj> ckiodata(lsites);
uint32_t cknersc_csum, ckscidac_csuma, ckscidac_csumb;
uint64_t ckoffset = offsetCopy;
std::cout << GridLogMessage << "writeLatticeObject: read back object to check" << std::endl;
std::cout << GridLogMessage << "writeLatticeObject: read back object" << std::endl;
grid->Barrier();
IOobject(w,grid,ckiodata,file,offset,format,BINARYIO_READ|BINARYIO_LEXICOGRAPHIC,
IOobject(w,grid,ckiodata,file,ckoffset,format,BINARYIO_READ|BINARYIO_LEXICOGRAPHIC,
cknersc_csum,ckscidac_csuma,ckscidac_csumb);
if ((cknersc_csum != nersc_csum) or (ckscidac_csuma != scidac_csuma) or (ckscidac_csumb != scidac_csumb))
{
std::cout << GridLogMessage << "writeLatticeObject: checksum failure in test read (" << attemptsLeft << " write attempt(s) remaining)" << std::endl;
std::cout << GridLogMessage << "writeLatticeObject: read test checksum failure, re-writing (" << attemptsLeft << " attempt(s) remaining)" << std::endl;
offset = offsetCopy;
}
else
{
std::cout << GridLogMessage << "writeLatticeObject: read test checksum correct" << std::endl;
break;
}
}
attemptsLeft--;