[mpi-21] Ballot 4 proposal: "static" predefined MPI C++ handles

Erez Haba erezh at [hidden]
Fri Jan 18 12:53:23 CST 2008

Aren't we also removing the const :)
The text would still be incorrect; in some implementations the MPI::COMM_WORLD is not const qualified.

I suggest removing this sentence. (In C++....)

-----Original Message-----
From: owner-mpi-21_at_[hidden] [mailto:owner-mpi-21_at_[hidden]] On Behalf Of Jeff Squyres
Sent: Friday, January 18, 2008 10:29 AM
To: mpi-21_at_[hidden]; mpi-21_at_[hidden]
Subject: [mpi-21] Ballot 4 proposal: "static" predefined MPI C++ handles

This mail is a proposal for MPI 2.1, ballot 4.

NOTE: This mail is a slight re-formatting of http://www.mpi-forum.org/mail_archive/mpi-21/2008/01/msg00119.html
  to be in ballot proposal format.

In MPI 2.0, page 9, lines 17-18 state:

"MPI provides certain predefined opaque objects and predefined, static
handles to these objects.  The user must not free such objects.  In C+
+, this is enforced by declaring the handles to these predefined
objects to be {\tt static const}."

The "static" in the last sentence should be deleted.


When using namespaces, all the MPI symbols are in the namespace and
objects do not need to be static in a singleton object for the MPI

Specifically: they are static *only* if you are using the singleton
object for the MPI class.  The context for the statement is talking
about the constant quality; the "static" is superfluous -- describing
whether "static" is necessary or not would be too much for this section.

Jeff Squyres
Cisco Systems

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