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Subject: [OMPI devel] [RFC] mca_base_open() NULL
From: Josh Hursey (jjhursey_at_[hidden])
Date: 2008-05-06 14:09:00


What: Add a MCA-NULL option to open no components in mca_base_open()
Why: Sometimes we do not want to open or select any components of a
framework.
Where: patch attached for current trunk.
When: Needs further discussion.
Timeout: Unknown. [May 13, 2008 (After teleconf)?]

Short Version:
--------------
This RFC is intended to continue discussion on the thread started here:
  http://www.open-mpi.org/community/lists/devel/2008/05/3793.php

Discussion should occur on list, but maybe try to come to some
settlement on this RFC in the next week or two.

Longer Version:
---------------
Currently there is no way to express to the MCA system that absolutely
no components of a framework are needed and therefore nothing should
be opened. The addition of a sentinel value is needed to explicitly
express this intention. It was suggested that if a 'MCA-NULL' value is
passed as an argument for a framework then this should be taken to
indicate such an intention.