strerror

[michael bane]

Ah. Now I see! I'll have to rethink this example. Is this point crystal
clear to others (as I said I'm new to netcdf)

Many thanks, Michael

On Wed, 2007-06-20 at 19:48 -0500, Wei-keng Liao wrote:
> Argument "start" in nfmpi_put_vara_double() is used by the variable 
> defined in the file, not by the local array.
> 
> 
> Wei-keng
> 
> On Wed, 20 Jun 2007, michael bane wrote:
> 
> > On Wed, 2007-06-20 at 12:48 -0500, Wei-keng Liao wrote:
> >> Your val array passed in nfmpi_put_vara_double() should contain 51,52,...
> >> for myPE == 1. This array will be used from index 1, 2, 3 ...
> >>
> >
> > (This top posting is making this hard to read!)
> >
> > If my val array is val(i)=i, for i=1,100
> > and PE#0 has start=1, count=50
> > and PE#1 has start=51, count=50
> > then I do not follow why PE#1 is even looking at val(j) j=1,2,3...
> > Surely it should print val(k), k=51,52,...
> >
> >
> >>
> >>
> >> On Wed, 20 Jun 2007, michael bane wrote:
> >>
> >>> On Wed, 2007-06-20 at 10:30 -0500, Wei-keng Liao wrote:
> >>>> The default I/O mode for pnetcdf is collective, to switch to independent
> >>>> mode, wrap the indep I/O calls by
> >>>>          stat = nfmpi_begin_indep_data(ncfileID)   and
> >>>>          stat = nfmpi_end_indep_data(ncfileID)
> >>>
> >>> thanks!
> >>>
> >>>> I don't know the answer to the error messages between F77 and F90.
> >>>> I also wonder if they are defined the same in NetCDF (the serial version).
> >>>
> >>> f77 and f90 seem the same for those error msgs I've seen (eg -35 =
> >>> 'netCDF file exists && NC_NOCLOBBER')
> >>>
> >>> But returning to my example (full main Fortran s/prog unit below), I
> >>> can't see why I'm not getting series 1,2,..,100 in the output file
> >> (last
> >>> part of the code, the /tmp/newFile_p2.ncf o/p file), but rather on 2 PEs
> >>> both processes seem to be writing 1,2,..50 so I'm guessing I'm missing
> >>> something (my impression was that each PE would write val(start),
> >>> val(start+1) for its local value of start)
> >>>
> >>> also attached is /tmp/out which is output from
> >>> ~/Fortran/MPI/parallel_netCDF$ rm /tmp/new*ncf && prun -B3 -l "%m%n:
> >>> rank %g: " -n 2 -p login ./speed_1d_f90  > /tmp/out 2>&1
> >>>
> >>> cheers, michael
> >>> ---
> >>>
> >>
> >