(j3.2006) (SC22WG5.5396) [ukfortran] Straw vote on draft DTS

Bill Long longb
Thu Dec 11 18:11:23 EST 2014

On Dec 11, 2014, at 10:45 AM, N.M. Maclaren <nmm1 at cam.ac.uk> wrote:

>> In my experiences teaching modern Fortran courses, it appears coarrays 
>> have breathed new life into a language whose demise had long been 
>> rumored.  ...
> Mine is quite the opposite.  I am seeing increasing interest in
> Fortran, and nobody is showing the slightest interest in coarrays.
> They have most of the disadvantages of both MPI and OpenMP.

Perhaps a different set of students.  Or maybe Damian?s class has an instructor with a more positive attitude. 

>> Will there be any possibility for implementors to leverage the MPI or 
>> SHMEM progress Bill is citing? GFortran/OpenCoarrys is already doing this 
>> in other areas: using MPI's one-sided communication and collective 
>> communication to support the same in coarray Fortran.
> WHAT progress?  I am on the MPI Forum mailing list, and I have seen
> none.  I am afraid that Bill is far too keen on citing progress that
> has not yet been delivered, or even is purely a glint in the eye of
> the people that hope to see it.

The people working on Fault Tolerance for MPI would disagree.  See, for example, the web page fault-tolerance.org, particularly the documents under ?User level failure mitigation?.  This web site is focused on incorporating the MPI FT proposal into Open MPI.

The Open SHMEM group is also working on their own version of resilience, and gave  talk on their work at the PGAS 2014 meeting in Eugene in October, ?Fault Tolerance for OpenSHMEM?. The presenter was from Barbara Chapman?s group at U. Houston, which is heavily involved with PGAS compilers and runtimes. 


Bill Long                                                                       longb at cray.com
Fortran Technical Suport  &                                  voice:  651-605-9024
Bioinformatics Software Development                     fax:  651-605-9142
Cray Inc./ Cray Plaza, Suite 210/ 380 Jackson St./ St. Paul, MN 55101

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