[MPI3 Fortran] MPI non-blocking transfer

[Craig Rasmussen]

I have been able to set aside this week for helping out with this.  I  
apologize for not being able to keep up with the discussion, but my  
funding has moved elsewhere (off from Fortran tools).  I'm going  
through email now (and this evening) and will be able to comment more  
coherently tomorrow.

I have a paper that I just submitted (after discussions with the  
relevant committee chairman) to the Fortran committee for discussion  
this week.  I'll forward this to the MPI group later today to get  
comments.

Cheers,
Craig


On Feb 9, 2009, at 4:06 PM, Aleksandar Donev wrote:

> On Monday 09 February 2009 14:57, Rolf Rabenseifner wrote:
>>       2.3 The existing solution must continue to work, i.e.,
>>           all existing and correct MPI applications must continue
>>           to work.
> There is no "existing solution", unless you count VOLATILE, which is
> only standard as of Fortran 2003. As you say,
>>       2.4 It is not my goal to automatically correct existing wrong
>>           MPI applications, i.e., applications without the DD trick
> the DD thing is a trick (I call them hacks), and actually does not  
> solve
> the full problem, e.g., Nick has pointed out that problems can occur  
> at
> the site of the call to MPI_Isend, *not* just the site of the wait  
> (but
> the cases when it fails are marginal and likely do not happen often
> enough to notice).
> Best,
> Aleks
> -- 
> Aleksandar Donev, Ph.D.
> Lawrence Postdoctoral Fellow @ Lawrence Livermore National Laboratory
> High Performance Computational Materials Science and Chemistry
> E-mail: donev1 at llnl.gov
> Phone: (925) 424-6816  Fax: (925) 423-0785
> Address: P.O.Box 808, L-367, Livermore, CA 94551-9900
> Web: http://cherrypit.princeton.edu/donev