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ENH: add simplified gather methods for globalIndex with default communicator

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- when combining lists in processor order this simplifies code and
  reduces memory overhead.

  Write this:
    ----
    labelList collected;

    const globalIndex sizing(input.size());
    sizing.gather(input, collected);
    ----

  OR

    ----
    labelList collected;
    globalIndex::gatherOp(input, collected);
    ----

  Instead of this:

    ----
    labelList collected;

    List<labelList> scratch(Pstream::nProcs());
    scratch[Pstream::myProcNo()] = input;
    Pstream::gatherList(scratch);

    if (Pstream::master())
    {
        collected = ListListOps::combine<labelList>
        (
            scratch,
            accessOp<labelList>()
        );
    }
    scratch.clear();
    ----
This commit is contained in:
Mark Olesen
2019-01-16 21:33:06 +01:00
parent f19150cd32
commit f498d09dbf
9 changed files with 236 additions and 131 deletions
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26
applications/utilities/mesh/manipulation/checkMesh/checkGeometry.C
View File

@ -1014,12 +1014,6 @@ Foam::label Foam::checkGeometry
scalarField mergedWeights;
globalFaces().gather
(
UPstream::worldComm,
ListOps::create<label>
(
UPstream::procID(UPstream::worldComm),
labelOp<int>() // int -> label
),
ami.srcWeightsSum(),
mergedWeights
);
@ -1048,18 +1042,14 @@ Foam::label Foam::checkGeometry
{
const cyclicACMIPolyPatch& pp =
refCast<const cyclicACMIPolyPatch>(pbm[patchi]);
scalarField mergedMask;
globalFaces().gather
(
UPstream::worldComm,
ListOps::create<label>
(
UPstream::procID(UPstream::worldComm),
labelOp<int>() // int -> label
),
pp.mask(),
mergedMask
);
if (Pstream::master())
{
wr.write
@ -1108,12 +1098,6 @@ Foam::label Foam::checkGeometry
scalarField mergedWeights;
globalFaces().gather
(
UPstream::worldComm,
ListOps::create<label>
(
UPstream::procID(UPstream::worldComm),
labelOp<int>() // int -> label
),
ami.tgtWeightsSum(),
mergedWeights
);
@ -1145,12 +1129,6 @@ Foam::label Foam::checkGeometry
scalarField mergedMask;
globalFaces().gather
(
UPstream::worldComm,
ListOps::create<label>
(
UPstream::procID(UPstream::worldComm),
labelOp<int>() // int -> label
),
pp.neighbPatch().mask(),
mergedMask
);

15
applications/utilities/mesh/manipulation/moveDynamicMesh/moveDynamicMesh.C
View File

@ -3,7 +3,7 @@
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
\\/ M anipulation | Copyright (C) 2016 OpenCFD Ltd.
\\/ M anipulation | Copyright (C) 2016-2019 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -78,19 +78,10 @@ void writeWeights
mergedFaces,
mergedPoints
);
// Collect field
scalarField mergedWeights;
globalFaces().gather
(
UPstream::worldComm,
ListOps::create<label>
(
UPstream::procID(UPstream::worldComm),
labelOp<int>() // int -> label
),
wghtSum,
mergedWeights
);
globalFaces().gather(wghtSum, mergedWeights);
instant inst(runTime.value(), runTime.timeName());