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<body><BR>Thanks for the quick reply. I am using PVFS2, so that is good new. One last question, just to clarify: I am aware that the striping_unit hint is only premitted when the file is created. What I'm wondering is, if I create afile using the striping_unit hint, but then later I add to the file (add records to it), will the additional data be striped in the same manner as was the initial data was when it was created?<BR>
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Thanks again,<BR>
Erich Peterson<BR><BR><BR><BR>
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> Date: Fri, 9 Feb 2007 10:11:34 -0600<BR>> To: erichpeterson@hotmail.com<BR>> CC: mpich-discuss@mcs.anl.gov<BR>> Subject: Re: [MPICH] striping_unit Hint Question<BR>> From: robl@mcs.anl.gov<BR>> <BR>> On Thu, Feb 08, 2007 at 10:43:48PM -0600, Erich Peterson wrote:<BR>> > Hi, I'm very new to MPICH2 and had a question concerning the hint<BR>> > striping_unit. I'm wondering first does MPICH2 implement this hint<BR>> > and when will it follow the hint and when will it not. <BR>> <BR>> MPICH2 does implement striping_unit, but it has meaning only for<BR>> parallel file systems. PVFS, for example, honors the hint, while NFS<BR>> does not.<BR>> <BR>> > Lastly, if I create a file with this hint, if I then open and append<BR>> > or otherwise write to that file, will the new data inserted also be<BR>> > striped using the same number bytes as was given when the file was<BR>> > created?<BR>> <BR>> I think for most parallel file systems the striping parameters are set<BR>> when the file is created. <BR>> <BR>> ==rob<BR>> <BR>> -- <BR>> Rob Latham<BR>> Mathematics and Computer Science Division A215 0178 EA2D B059 8CDF<BR>> Argonne National Lab, IL USA B29D F333 664A 4280 315B<BR><BR><br /><hr />Live Search: Better results, fast <a href='http://get.live.com/search/overview' target='_new'>Try it now!</a></body>
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