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path: root/Source/FieldSolver/SpectralSolver/SpectralFieldData.cpp
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-rw-r--r--Source/FieldSolver/SpectralSolver/SpectralFieldData.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/Source/FieldSolver/SpectralSolver/SpectralFieldData.cpp b/Source/FieldSolver/SpectralSolver/SpectralFieldData.cpp
index bdb631063..056c030c0 100644
--- a/Source/FieldSolver/SpectralSolver/SpectralFieldData.cpp
+++ b/Source/FieldSolver/SpectralSolver/SpectralFieldData.cpp
@@ -145,6 +145,8 @@ SpectralFieldData::ForwardTransform (const int lev,
#endif
// Loop over boxes
+ // Note: we do NOT OpenMP parallelize here, since we use OpenMP threads for
+ // the FFTs on each box!
for ( MFIter mfi(mf); mfi.isValid(); ++mfi ){
if (cost && WarpX::load_balance_costs_update_algo == LoadBalanceCostsUpdateAlgo::Timers)
{
@@ -247,6 +249,8 @@ SpectralFieldData::BackwardTransform( const int lev,
#endif
// Loop over boxes
+ // Note: we do NOT OpenMP parallelize here, since we use OpenMP threads for
+ // the iFFTs on each box!
for ( MFIter mfi(mf); mfi.isValid(); ++mfi ){
if (cost && WarpX::load_balance_costs_update_algo == LoadBalanceCostsUpdateAlgo::Timers)
{