Produces more reasonable order of attenuation when comparing #802

Job	Run time
macos-latest.openmpi.python-3.12	16m 25s
ubuntu-latest.mpich.python-3.12	7m 42s
macos-latest.mpich.python-3.12	8m 49s
windows-latest.msmpi.python-3.12	18m 57s
ubuntu-latest.openmpi.python-3.12	7m 50s
	59m 43s

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