Ken Raffenetti 4c19410669 mpich: add datatype engine variant (#30257) ... Starting with MPICH 3.4, we offer different datatype engine options (dataloop or yaksa). The default is 'auto', which will choose based on the device configuration. Starting with MPICH 4.0, building against an external yaksa library is supported. Co-authored-by: Massimiliano Culpo <massimiliano.culpo@gmail.com>		2022-05-03 22:12:19 +02:00
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spack	mpich: add datatype engine variant (#30257)	2022-05-03 22:12:19 +02:00