Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] MPI-IO puzzlement
From: Ricardo Reis (rreis_at_[hidden])
Date: 2012-05-15 14:19:06


On Tue, 15 May 2012, Jeff Squyres wrote:

> On May 15, 2012, at 10:53 AM, Ricardo Reis wrote:
>
>> My problem is rather that
>>
>> INTEGER(kind=MPI_OFFSET_KIND) :: offset
>>
>> MPI_OFFSET_KIND is insuficient to represent my offset...
>
> Is it not a 64 bit integer for your compiler?
>
> There *is* a bug in OMPI at the moment that we're casting the result back down to 32 bits. I can give you a patch for that, if you'd like to try it.

I'll get it from svn and try it out. On another note, me thinks with a
derived_data type I nail two with one stroke. This problem and the
limitation of 2GB per core when writing files...

  best,

  Ricardo Reis

  'Non Serviam'

  PhD/MSc Mechanical Engineering | Lic. Aerospace Engineering

  Computational Fluid Dynamics, High Performance Computing, Turbulence
  http://www.lasef.ist.utl.pt

  Cultural Instigator @ Rádio Zero
  http://www.radiozero.pt

  http://www.flickr.com/photos/rreis/

  contacts: gtalk: kyriusan_at_[hidden] skype: kyriusan

  Institutional Address:

  Ricardo J.N. dos Reis
  IDMEC, Instituto Superior Técnico, Technical University of Lisbon
  Av. Rovisco Pais
  1049-001 Lisboa
  Portugal

                       - email sent with alpine 2.00 -