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Re: New Ticket - [netCDF !OZZ-831187]: Issues with parallel netCDF-4

Lynton,

> I posted this on the support request form. Is that the best place or should I do it a different way?

If you send it to address@hidden, it will get in our support queue, and eventually
someone will look at it.

--Russ


On Dec 17, 2009 7:48am, "address@hidden" <address@hidden> wrote:
> New Ticket: Issues with parallel netCDF-4
>
>
>
> Full Name: lynton Appel
>
> Email Address: address@hidden
>
> Organization: CCFE
>
> Package Version: 1.4.01
>
> Operating System: linux
>
> Hardware:
>
> Description of problem:
>
>
>
> (1) Please can you provide a clear explanation of the difference
>
>    between collective and independent operations.  Is a "collective"
>
>    write operation a simultaneous write by all processes to a netCDF
>
>    data file (of course in practice processors cannot be guaranteed to
>
>    write precisely at the same time). Does the data written by each
>
>    processor in this situation identical?
>
>
>
> (2) Is it correct compressed data cannot be written with the parallel
>
>    netCDF4 interface (the facility does not appear to be offered by
>
>    hdf5).
>
>
>
> (3) When using the serial netCDF4 library please can you arrange for
>
>    configure to insert the following lines into the netcdf.h file:
>
>
>
> #undef MPI_Comm
>
> #undef MPI_Info
>
> #undef MPI_COMM_
>
> #undef MPI_INFO_NULL
>
>
>
> Otherwise it is not possible to access the MPI library.
>
>
>
>
>
>
>
> Ticket Details
>
> ===================
>
> Ticket ID: OZZ-831187
>
> Department: Support netCDF
>
> Priority: Normal
>
> Status: Open
>
> Link:  https://www.unidata.ucar.edu/esupport/staff/index.php?_m=tickets&_a=viewticket&ticketid=10387
>
>
>