Adding clarification to MPI_WIN_LOCK_ALL

[mpiforumbot]

Originally by htor on 2011-10-24 13:54:00 -0500

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Author: RMA Working Group

Description

This problem was discovered after the first reading of the MPI-3 RMA ticket. The group decided to add an advice to users to clarify the usage of MPI_MODE_NOCHECK. There are no semantic changes in this ticket.

History

None.

Proposed Solution

Add the following advice to users right after the description of MPI_WIN_LOCK_ALL (Page 37 Line 37):

\begin{users}
There may be additional overheads associated with using \mpifunc{MPI_WIN_LOCK} and
\mpifunc{MPI_WIN_LOCK_ALL} concurrently on the same window. These overheads could 
be avoided by specifying the assertion \const{MPI_MODE_NOCHECK} when possible (see 
Section~\ref{sec:1sided-assert}).
\end{users}

Impact on Implementations

None

Impact on Applications / Users

None, better understanding of the core semantics.

Alternative Solutions

Entry for the Change Log

[mpiforumbot]

Originally by htor on 2012-05-29 01:52:20 -0500

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Text committed,

Torsten

[mpiforumbot]

Originally by hubertritzdorf on 2012-07-15 09:37:38 -0500

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Reviewed in mpi-report-r1244.pdf

[mpiforumbot]

Originally by potluri on 2012-07-16 11:02:33 -0500

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Reviewed in mpi-report-r1300.pdf

[mpiforumbot]

Originally by anhvo on 2012-07-18 09:50:07 -0500

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Missing the ticket label (r1388)

[mpiforumbot]

Originally by htor on 2012-07-18 09:55:06 -0500

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Replying to anhvo:

Missing the ticket label (r1388)
was rolled in as part of #270 ... but I changed the label now.

--> http://www.unixer.de/sec/mpi-report.pdf

Torsten

[mpiforumbot]

Originally by jsquyres on 2012-07-18 10:12:32 -0500

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Appears to be fully committed. Moving to "Waiting for PDF reviews".

[mpiforumbot]

Originally by RolfRabenseifner on 2013-01-07 11:24:47 -0600

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Since Sep. 21, 2012, this ticket is included in MPI-3.0 and the pdf is checked according to https://svn.mpi-forum.org/svn/mpi-forum-docs/trunk/meetings/2012-07-jul/mpi3-tickets.xlsx

Therefore, by proxy / on behalf of the ticket owner, I close it with priority "Ticket complete", resolution "Text committed".