[MPICH] Multithreading on Windows

[Rajeev Thakur]

To use threads on Windows, you need to select the multithreaded socket
channel as described here:
http://www-unix.mcs.anl.gov/web-mail-archive/lists/mpich-discuss/2006/01/msg
00064.html
 
Rajeev
 
PS: If MPI_Init_thread returns MPI_THREAD_SINGLE, it is not safe to run as
if it is thread_multiple.
 


  _____  

From: owner-mpich-discuss at mcs.anl.gov
[mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Yoder, Jeffrey - SSD
Sent: Wednesday, March 29, 2006 12:45 PM
To: mpich-discuss at mcs.anl.gov
Subject: [MPICH] Multithreading on Windows



We are using MPI_THREAD_MULTIPLE on Windows and seem to be having some
success but also some troubles which we are thinking might be related to the
threading on Windows.

 

I know MPI_THREAD_MULTIPLE is only a request and, in fact, MPI_Init_thread
always returns MPI_THREAD_SINGLE.  But we seem to be able to operate
multi-threaded in some instances.

 

Does this make sense?  Why would it work sometimes and not others?  Should
we dump the Windows platform altogether?

 

Jeff Yoder
ITT Industries Space Systems LLC
Software Engineering
(260)451-6508

 <mailto:jeffrey.yoder at itt.com> jeffrey.yoder at itt.com

 

The most likely way for the world to be destroyed, most experts agree,

is by accident. That's where we come in; we're computer professionals.

We cause accidents. - Nathaniel Borenstein

 



 

************************************

This e-mail and any files transmitted with it are proprietary and intended
solely for the use of the individual or entity to whom they are addressed.
If you have received this e-mail in error please notify the sender. Please
note that any views or opinions presented in this e-mail are solely those of
the author and do not necessarily represent those of ITT Industries, Inc.
The recipient should check this e-mail and any attachments for the presence
of viruses. ITT Industries accepts no liability for any damage caused by any
virus transmitted by this e-mail.

************************************



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/mpich-discuss/attachments/20060329/6509af82/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 4490 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/mpich-discuss/attachments/20060329/6509af82/attachment.jpeg>