LAM/MPI logo

LAM/MPI General User's Mailing List Archives

  |   Home   |   Download   |   Documentation   |   FAQ   |   all just in this list

From: Virgilio, Vincent (Vincent.Virgilio_at_[hidden])
Date: 2003-09-18 14:54:17


Hi Lei,

Ah, I don't even know what column to start Fortran code in (7?)!

The link to the Large File Summit provided by John E Bussoletti should
provide further direction.

Vince Virgilio

> -----Original Message-----
> From: Lei_at_UCI [mailto:pan_at_[hidden]]
> Sent: Thursday, September 18, 2003 2:05 PM
> To: General LAM/MPI mailing list
> Subject: Re: LAM: RE: Limitation in size of a single file
>
>
> Hi Vincent:
>
> I am using Fortran and MPI. Are there equivalent flags
> For Fortran? Too bad our cluster is down now so I cannot
> Test your flags.
>
> Thanks a lot,
>
> -Lei
>
> On 9/18/03 11:27 AM, "Virgilio, Vincent"
> <Vincent.Virgilio_at_[hidden]> wrote:
>
> > Perhaps you need to build MPI with (at least) the following
> compiler flags:
> >
> > -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
> >
> > which should enable 'large file support' in the standard C
> library. (FWIW, I
> > don't think the _GNU_ standard C++ library supports large
> files yet.)
> >
> > I ran into (seemingly) the same limit in my application,
> and broke through
> > it with these flags.
> >
> > Caveat emptor (BEWARE): I am not using MPI facilities for
> I/O, so didn't
> > notice the limit there, and therefore didn't compile
> LAM/ROMIO with these
> > flags.
> >
> > Vince Virgilio
> >
> >> -----Original Message-----
> >> From: Lei_at_UCI [mailto:pan_at_[hidden]]
> >> Sent: Thursday, September 18, 2003 1:02 PM
> >> To: LAM/MPI mailing list
> >> Subject: LAM: Limitation in size of a single file
> >>
> >>
> >> Hi,
> >>
> >> The Linux cluster I am using seems to have a
> >> Limitation of ~2GB on the size one single
> >> File can be. Both Fortran file I/O and
> >> MPI parallel file I/O failed with broken
> >> Pipe on outputting a file of ~2.8GB.
> >>
> >> Please help! Sorry I am not a system admin
> >> Which means if you help me please give me
> >> Detailed steps on how to resolve this.
> >>
> >> Thanks and I appreciate your help!
> >>
> >> -Lei
> >>
> >> _______________________________________________
> >> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> >>
> >
> >
> > ************************************
> > If this email is not intended for you, or you are not
> responsible for
> > the delivery of this message to the addressee, please note that this
> > message may contain ITT Privileged/Proprietary Information. In such
> > a case, you may not copy or deliver this message to anyone.
> You should
> > destroy this message and kindly notify the sender by reply email.
> > Information contained in this message that does not relate to the
> > business of ITT is neither endorsed by nor attributable to ITT.
> > ************************************
> >
> >
> > _______________________________________________
> > This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>
> _______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>

************************************
If this email is not intended for you, or you are not responsible for
the delivery of this message to the addressee, please note that this
message may contain ITT Privileged/Proprietary Information. In such
a case, you may not copy or deliver this message to anyone. You should
destroy this message and kindly notify the sender by reply email.
Information contained in this message that does not relate to the
business of ITT is neither endorsed by nor attributable to ITT.
************************************