Re: [netcdfgroup] parallel netcdf4 fails on nc_enddef when deflate-filter is used

  • To: Orion Poplawski <orion@xxxxxxxxxxxxx>
  • Subject: Re: [netcdfgroup] parallel netcdf4 fails on nc_enddef when deflate-filter is used
  • From: Jim Edwards <jedwards@xxxxxxxx>
  • Date: Thu, 8 Jan 2015 16:16:48 -0700
pigz is only shared memory parallel and decompression is still serial so
it's not really a solution.

On Thu, Jan 8, 2015 at 4:10 PM, Orion Poplawski <orion@xxxxxxxxxxxxx> wrote:

> On 01/07/2015 02:52 AM, Heiko Klein wrote:
> > Hi Russ,
> >
> > thanks for your answer and the explanation from the hdfgroup.
> >
> > For our purposes, it is not the parallel IO, which is important, but the
> > bottleneck is in many cases zlib. Are there other ways to parallelize the
> > 'zlib' portion of netcdf/hdf?
> >
> > Heiko
>
> Perhaps looking at the pigz code would be useful for this.
>
>
> --
> Orion Poplawski
> Technical Manager                     303-415-9701 x222
> NWRA, Boulder/CoRA Office             FAX: 303-415-9702
> 3380 Mitchell Lane                       orion@xxxxxxxx
> Boulder, CO 80301                   http://www.nwra.com
>
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-- 
Jim Edwards

CESM Software Engineer
National Center for Atmospheric Research
Boulder, CO
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