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Migration of old MPI Forum Trac Tickets to GitHub. New issues belong on mpi-forum/mpi-issues.
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Allow Application Behavior Hints in Info Keys #476

Open mpiforumbot opened 8 years ago

mpiforumbot commented 8 years ago

Originally by jdinan on 2015-05-04 11:19:47 -0500

Summary

This ticket relaxes the restriction that info keys cannot change semantics. It allows info keys to be used to provide application behavior hints, which an implementation can use to restrict the set of functionality or semantics supported, e.g. on a particular communicator, to optimize performance for the given usage model.

This proposal also removes info key propagation from MPI_COMM_DUP to ensure backward compatibility with existing applications and libraries. MPI_COMM_DUP_WITH_INFO should be used to explicitly propagate info hints.

Proposed Changes

See attached proposal.

Related Tickets

mpiforumbot commented 8 years ago

Originally by jdinan on 2015-05-05 14:04:46 -0500

Attachment added: context.pdf (443.7 KiB) Ticket 476 proposal with change markers