Re: [netcdf-hdf] parallel IO in netcdf-beta-4

  • To: "Edward (Ted) Mansell" <ted.mansell@xxxxxxxx>
  • Subject: Re: [netcdf-hdf] parallel IO in netcdf-beta-4
  • From: robl@xxxxxxxxxxx (Robert Latham)
  • Date: Wed, 21 Nov 2007 11:58:44 -0600
On Thu, Nov 15, 2007 at 11:06:09AM -0600, Edward (Ted) Mansell wrote:
> I did some compiling of netcdf-4 (both beta 1 and the Oct. 22
> snapshot with hdf5-1.8.0-of20070814), and while data compression is
> working fine, parallel IO doesn't work (make check fails on the
> parallel tests).  Is it safe to say that parallel IO just doesn't
> work yet in netcdf-4? 

Parallel I/O definitely works in netcdf-4, but did need a little bit
of love.  

Here's more or less how to get parallel MPI-IO out of netcdf-4
- start with hdf5-1.8.0-beta3 for now.  

- configure hdf5 for parallel I/O:  (basically build hdf5 with mpicc)

- get ahold of something newer than the oct 22 netcdf-4 snapshot. Ed
  committed some fixes to the configure process which make
  parallel-netcdf4 work even better

==rob

-- 
Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B