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Fix for rare crash of ILL_IN4 / MPI #2287

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Merged
willend merged 1 commit into from
Jan 12, 2026
Merged

Fix for rare crash of ILL_IN4 / MPI #2287

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4 changes: 4 additions & 0 deletions mcstas-comps/examples/ILL/ILL_IN4/ILL_IN4.instr
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Original file line number Diff line number Diff line change
Expand Up @@ -329,6 +329,10 @@ INITIALIZE %{

#pragma acc update device( environment_thickness )

#ifdef USE_MPI
/* In case of MPI mode, add an MPI_Barrier to ensure no node runs on an uncompleted/non-existentt Dirac2D.sqw */
MPI_Barrier(MPI_COMM_WORLD);
#endif
%}


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