From fcf5e29570d760da69b9f73a292c72a84b3d50f7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20Kl=C3=B6ckner?= <inform@tiker.net>
Date: Thu, 3 Mar 2022 12:01:24 -0600
Subject: [PATCH] Explain --oversubscribe in CI config

---
 .github/workflows/ci.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9d46d06e..4c6b9a2d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -69,6 +69,9 @@ jobs:
                 python euler/acoustic_pulse.py --lazy
                 python euler/vortex.py --oi --lazy
 
+                # --oversubscribe is an option for Open MPI (which is what the CI uses)
+                # It allows the CI to succeed even if the CI runner does not
+                # have a sufficient number of cores.
                 mpiexec -np 2 --oversubscribe python wave/wave-op-mpi.py --lazy
 
     docs:
-- 
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