parallel netcdf on BG, colons in filenames?

[Rajeev Thakur]

The ROMIO MPI-IO implementation has always given the user the option of
specifying the file system type by prefixing the filename with a ufs: or
nfs: or pvfs:. So the colon is interpreted as a separator of an optional
file system type. Since ROMIO is included in IBM's MPI, I guess this feature
exists there as well. The best solution would be to avoid colons in the file
name.

Rajeev 


> -----Original Message-----
> From: owner-parallel-netcdf at mcs.anl.gov 
> [mailto:owner-parallel-netcdf at mcs.anl.gov] On Behalf Of John 
> Michalakes
> Sent: Saturday, November 11, 2006 12:14 PM
> To: parallel-netcdf at mcs.anl.gov
> Subject: parallel netcdf on BG, colons in filenames?
> 
> This program works on the NCAR blue gene system:
> 
>            implicit none
>            include "mpif.h"
> #include "pnetcdf.inc"
>            integer stat, ierr, comm, ncid
>            call mpi_init(ierr)
>            stat = NFMPI_CREATE(MPI_COMM_WORLD, 
> "wrfout_d01_2002-05-27_00_00_00" , NF_CLOBBER, MPI_INFO_NULL, ncid)
>            print*,stat,ncid
>            stop
>            end
>  
> This one does not:
> 
>            implicit none
>            include "mpif.h"
> #include "pnetcdf.inc"
>            integer stat, ierr, comm, ncid
>            call mpi_init(ierr)
>            stat = NFMPI_CREATE(MPI_COMM_WORLD, 
> "wrfout_d01_2002-05-27_00:00:00" , NF_CLOBBER, MPI_INFO_NULL, ncid)
>            print*,stat,ncid
>            stop
>            end
> 
> The output from this 2nd program is attached.
> 
> The only difference is colons characters in the file name.  
> Any ideas? (aside from the obvious, don't put colons in file names :-)
> 
> John
> 
> -----------------------------------------------------------
> John Michalakes, Software Engineer        michalak at ucar.edu
> NCAR, MMM Division                   voice: +1 303 497 8199
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> ----------------------------------------------------------- 
>