Merge branch 'main' into ci_mirgecom_examples

inducer · Mar 3, 2022 · 551c993 · 551c993
2 parents 5f5ff6b + f7a9f47
commit 551c993
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/grudge/trace_pair.py b/grudge/trace_pair.py
@@ -505,7 +505,7 @@ def cross_rank_trace_pairs(
                 # - https://github.com/illinois-ceesd/mirgecom/issues/617#issuecomment-1057082716  # noqa
                 # - https://github.com/inducer/grudge/pull/222
                 from mpi4py import MPI
-                tag_ub = actx.mpi_communicator.Get_attr(MPI.TAG_UB)
+                tag_ub = MPI.COMM_WORLD.Get_attr(MPI.TAG_UB)
                 key_builder = _TagKeyBuilder()
                 digest = key_builder(comm_tag)
                 num_tag = sum(ord(ch) << i for i, ch in enumerate(digest)) % tag_ub