Of course - An assertion is a statement that the application does not require some MPI standard feature or semantic guarantee. It is not a directive to the MPI implementation. The implementation is free to provide that feature or guarantee even if the application says it is not needed. The story is a bit different for a helper library because the library is logically a more or less opaque part of the application. If the caller of MPI_INIT_ASSERTED says the application does not require something and then uses a library that does require that feature or guarantee - the library must raise an error or adjust its behavior to live within the assertion. Dick Treumann - MPI Team/TCEM IBM Systems & Technology Group Dept 0lva / MS P963 -- 2455 South Road -- Poughkeepsie, NY 12601 Tele (845) 433-7846 Fax (845) 433-8363 mpi3-subsetting-bounces_at_[hidden] wrote on 06/20/2008 12:58:03 PM:

Hi,

Ignoring an assertion should be perfectly legal.

Best regards.

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