strerror

[Wei-keng Liao]

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
>>> ---
>>>
>>
>