[Darshan-users] Darshan pre-release 2.2.4-pre4
Rob Latham
robl at mcs.anl.gov
Tue Nov 20 11:05:04 CST 2012
On Tue, Nov 20, 2012 at 11:55:52AM -0500, Phil Carns wrote:
> darshan-2.2.4-pre4
> =============
> * Disable extra stat() of newly opened files by default in order
> to improve performance on shared files. Reported by Yushu Yao.
> - prevents Darshan from reporting SIZE_AT_OPEN, FILE_ALIGNENT, and
> DARSHAN_FILE_NOT_ALIGNED values
> - features can still be enabled via --enable-stat-at-open option
Hi Phil. FILE_ALIGNENT is maybe one of the most important metrics for
understanding poor GPFS write performance.
==rob
--
Rob Latham
Mathematics and Computer Science Division
Argonne National Lab, IL USA
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