[Mpi3-ft] Nonblocking Process Creation and Management

Josh Hursey jjhursey at open-mpi.org
Wed Jan 13 13:25:09 CST 2010

Since join() does a handshake to create the new communicator, it  
should be delayed by the remote side of the protocol. A nonblocking  
version would allow the application to possibly do other computation  
while waiting for the remote side.

As far as Cancel, I have been thinking that it might be useful for  
Accept and Connect. Though with the normal problems of Cancel, I don't  
know how to really specify it. I want to look into it a bit more  
before next week to see if anything useful can be said of using Cancel  
with Accept/Connect.

-- Josh

On Jan 13, 2010, at 2:01 PM, Supalov, Alexander wrote:

> Hi,
> Do we really need the IJOIN thing? I think the JOIN itself should be  
> deprecated. Just as CANCEL, by the way.
> Best regards.
> Alexander
> -----Original Message-----
> From: mpi3-ft-bounces at lists.mpi-forum.org [mailto:mpi3-ft-bounces at lists.mpi-forum.org 
> ] On Behalf Of Josh Hursey
> Sent: Tuesday, January 12, 2010 11:04 PM
> To: MPI 3.0 Fault Tolerance and Dynamic Process Control working Group
> Subject: [Mpi3-ft] Nonblocking Process Creation and Management
> I extended and cleaned up the Nonblocking Process Creation and
> Management proposal on the wiki:
>    https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Async-proc-mgmt
> I added the rest of the nonblocking interface proposals, and touched
> up some of the language. I do not have an implementation yet, but will
> work on that next. There are a few items that I need to refine a bit
> still (e.g., MPI_Cancel, mixing of blocking and nonblocking), but this
> should give us a foundation to start from.
> I would like to talk about this next week during our working group
> slot at the MPI Forum meeting.
> Let me know what you think, and if you see any problems.
> Thanks,
> Josh
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