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IBM System Blue Gene Solution Blue Gene/Q Application Development by Megan Gilge

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MPI and CNK environment variables
This appendix describes the environment variables that affect the run time characteristics of programs that run on the Blue Gene/Q compute nodes. These variables configure settings for the Message Passing Interface (MPI) and the Compute Node Kernel (CNK).
Environment variables can be used to improve performance or modify functional attributes of the application.
The following topics are covered:

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