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List:       lustre-discuss
Subject:    Re: [lustre-discuss] T3PIO library usage
From:       "Dilger, Andreas" <andreas.dilger () intel ! com>
Date:       2016-06-02 21:51:42
Message-ID: CE5A5010-6CEE-4A6B-AECE-E0C2B6603AE4 () intel ! com
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On 2016/06/02, 02:27, "Prakrati.Agrawal@shell.com" <Prakrati.Agrawal@shell.com> wrote:
> 
> I am having a HDF5 code which writes multiple files of different
> sizes to the Lustre file system. Since I can set the Lustre stripe
> count and size only once before I run the code, it remains the same
> for all the file sizes.

Correct.  In the future this will be handled by the "Progressive
File Layout" feature to allow setting different stripe counts for
different file sizes:
http://lustre.ornl.gov/ecosystem/documents/tech/Mohr-UTK-PFL.pdf
https://www.youtube.com/watch?v=5rm6Nlmqdp0

> I am using T3PIO library in conjunction with HDF5 to change lustre
> stripe settings through the code for each file that I write.
> But after running the code, I am still finding all the files with
> the same lustre stripe settings.
> Please can someone help.
  
Could you please provide additional information on how you are
setting the stripe settings?

Cheers, Andreas
-- 
Andreas Dilger

Lustre Principal Architect
Intel High Performance Data Division




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