openfoam/applications/utilities/postProcessing/dataConversion/foamToEnsightParts/checkHasMovingMesh.H
Mark Olesen 0c168c43fa ENH: improve startup time for foamToEnsight conversion (issue #240).
Old code:
    Found 10990 time steps
    Search for moving mesh ... no moving mesh detected.
    Startup in 329.09 s

Updated:
    Found 10990 time steps
    Search for moving mesh ... no moving mesh detected.
    Startup in 1.6 s

- Cause was checking "polyMesh/points" via an IOobject.
  Short-circuit with a check for a polyMesh/ directory first.

  Limit the check to the master-node as well to further reduce
  load on the file-system.

------------------------------

ENH: improve per-step conversion times for foamToEnsight.

Old code:
    Converting 11001 time steps
    Time [0] = 0       Wrote in 1.53 s
    Time [1] = 1       Wrote in 1.52 s
    ...
    Time [100] = 100   Elapsed time 205.35 s

Updated:
    Converting 11001 time steps
    Time [0] = 0       Wrote in 1.4 s
    Time [1] = 1       Wrote in 0.07 s
    ...
    Time [100] = 100   Elapsed time 42.4 s

- Speedup by hashing test results from the first conversion step
  instead of checking each time.

  Check data on all nodes to avoid problems with incomplete writes.

------------------------------

BUG: moving mesh detection failed for foamToEnsightParts

- adjusted to agree with updated foamToEnsight

------------------------------

Note:

- foamToEnsightParts (serial) still has about twice the throughput of
  foamToEnsight.
2016-09-21 18:15:19 +02:00

49 lines
1.1 KiB
C

// check for "points" in all of the result directories
// - could restrict to the selected times
bool hasMovingMesh = false;
if (timeDirs.size() > 1 && Pstream::master())
{
// We already loaded a mesh (usually from constant).
// See if any other "polyMesh/points" files exist too.
const fileName& baseDir = mesh.time().path();
Info<< "Search for moving mesh ... " << flush;
forAll(timeDirs, timeI)
{
hasMovingMesh =
(
isDir(baseDir/timeDirs[timeI].name()/polyMesh::meshSubDir)
&& IOobject
(
"points",
timeDirs[timeI].name(),
polyMesh::meshSubDir,
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false // no register
).typeHeaderOk<pointIOField>(true)
);
if (hasMovingMesh)
{
break;
}
}
if (hasMovingMesh)
{
Info<< "found." << nl
<< " Writing meshes for every timestep." << endl;
}
else
{
Info<< "none detected." << endl;
}
}
reduce(hasMovingMesh, orOp<bool>());