Update mdi.py #1383

Job	Run time
posix (ubuntu-latest, OFF)	10m 40s
conda (ubuntu-latest)	1m 27s
posix (ubuntu-latest, ON)	13m 30s
windows (windows-latest)	2m 39s
posix (ubuntu-latest, mpich, OFF)	43m 46s
posix (ubuntu-latest, mpich, ON)	48m 56s
posix (ubuntu-latest, openmpi, OFF)	38m 57s
posix (ubuntu-latest, openmpi, ON)	47m 19s
posix (macos-latest, OFF)	1m 19s
posix (macos-latest, ON)	1m 19s
posix (macos-latest, mpich, OFF)	2m 34s
posix (macos-latest, mpich, ON)	2m 14s
	3h 34m 40s

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