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Fix GroupCommunicator issue in scalarGrad3D #290

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Jul 19, 2024
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Fix GroupCommunicator issue in scalarGrad3D #290

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5 changes: 3 additions & 2 deletions src/utils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -905,8 +905,9 @@ void scalarGrad3D(ParGridFunction &u, ParGridFunction &gu) {
gcomm.Bcast(zones_per_vdof);

// Accumulate for all vdofs.
gcomm.Reduce<double>(gu.GetData(), GroupCommunicator::Sum);
gcomm.Bcast<double>(gu.GetData());
GroupCommunicator &gcomm_g = gu.ParFESpace()->GroupComm();
gcomm_g.Reduce<double>(gu.GetData(), GroupCommunicator::Sum);
gcomm_g.Bcast<double>(gu.GetData());

// Compute means.
for (int dir = 0; dir < dim; dir++) {
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