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ENH: bundle Pstream:: AllGather methods

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- bundles frequently used 'gather/scatter' patterns more consistently.

  - combineAllGather     -> combineGather + broadcast
  - listCombineAllGather -> listCombineGather + broadcast
  - mapCombineAllGather  -> mapCombineGather + broadcast
  - allGatherList        -> gatherList + scatterList
  - reduce               -> gather + broadcast (ie, allreduce)

- The allGatherList currently wraps gatherList/scatterList, but may be
  replaced with a different algorithm in the future.

STYLE: PstreamCombineReduceOps.H is mostly unneeded now
This commit is contained in:
Mark Olesen
2022-03-28 16:30:51 +02:00
parent e98acdc4fc
commit d38de84d21
105 changed files with 935 additions and 605 deletions
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22
src/parallel/distributed/distributedTriSurfaceMesh/distributedTriSurfaceMesh.C
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@ -323,7 +323,7 @@ Foam::word Foam::distributedTriSurfaceMesh::findLocalInstance
bool Foam::distributedTriSurfaceMesh::read()
{
// Get bb of all domains.
procBb_.setSize(Pstream::nProcs());
procBb_.resize_nocopy(Pstream::nProcs());
if (dict_.empty())
{
@ -334,8 +334,6 @@ bool Foam::distributedTriSurfaceMesh::read()
procBb_[Pstream::myProcNo()] =
treeBoundBoxList(1, treeBoundBox(localBb));
Pstream::gatherList(procBb_);
Pstream::scatterList(procBb_);
dict_.add("bounds", procBb_[Pstream::myProcNo()]);
@ -372,8 +370,6 @@ bool Foam::distributedTriSurfaceMesh::read()
else
{
dict_.readEntry("bounds", procBb_[Pstream::myProcNo()]);
Pstream::gatherList(procBb_);
Pstream::scatterList(procBb_);
// Wanted distribution type
distType_ = distributionTypeNames_.get("distributionType", dict_);
@ -392,6 +388,8 @@ bool Foam::distributedTriSurfaceMesh::read()
);
}
Pstream::allGatherList(procBb_);
return true;
}
@ -4603,8 +4601,7 @@ Foam::distributedTriSurfaceMesh::localQueries
{
sendSizes[Pstream::myProcNo()][proci] = sendMap[proci].size();
}
Pstream::gatherList(sendSizes);
Pstream::scatterList(sendSizes);
Pstream::allGatherList(sendSizes);
// Determine receive map
@ -4690,16 +4687,11 @@ void Foam::distributedTriSurfaceMesh::distribute
{
List<List<treeBoundBox>> newProcBb(Pstream::nProcs());
switch(distType_)
switch (distType_)
{
case FOLLOW:
newProcBb[Pstream::myProcNo()].setSize(bbs.size());
forAll(bbs, i)
{
newProcBb[Pstream::myProcNo()][i] = bbs[i];
}
Pstream::gatherList(newProcBb);
Pstream::scatterList(newProcBb);
newProcBb[Pstream::myProcNo()] = bbs;
Pstream::allGatherList(newProcBb);
break;
case INDEPENDENT: