From 4bcf3b7aea8fadb29651c43db89ac16b45afbf4a Mon Sep 17 00:00:00 2001 From: Paul Romano Date: Wed, 16 Sep 2020 22:46:31 -0500 Subject: [PATCH] Only reduce tallies if n_procs > 1 --- src/tallies/tally.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/tallies/tally.cpp b/src/tallies/tally.cpp index 286512fc00..0b0e4148f7 100644 --- a/src/tallies/tally.cpp +++ b/src/tallies/tally.cpp @@ -775,7 +775,7 @@ accumulate_tallies() { #ifdef OPENMC_MPI // Combine tally results onto master process - if (settings::reduce_tallies) reduce_tally_results(); + if (settings::reduce_tallies && mpi::n_procs > 1) reduce_tally_results(); #endif // Increase number of realizations (only used for global tallies)