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-rw-r--r--var/spack/repos/builtin/packages/charm/package.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/var/spack/repos/builtin/packages/charm/package.py b/var/spack/repos/builtin/packages/charm/package.py
index 1ec53c2138..7072e37cd3 100644
--- a/var/spack/repos/builtin/packages/charm/package.py
+++ b/var/spack/repos/builtin/packages/charm/package.py
@@ -53,7 +53,7 @@ class Charm(Package):
# Communication mechanisms (choose exactly one)
# TODO: Support Blue Gene/Q PAMI, Cray GNI, Cray shmem, CUDA
- variant("mpi", default=False,
+ variant("mpi", default=True,
description="Use MPI as communication mechanism")
variant("multicore", default=False,
description="Disable inter-node communication")