From mboxrd@z Thu Jan 1 00:00:00 1970 From: emoly.liu Date: Wed, 05 Nov 2008 14:46:41 +0800 Subject: [Lustre-devel] [Lustre-discuss] a new Lustre ADIO driver In-Reply-To: <49110B1A.5030201@sun.com> References: <49110B1A.5030201@sun.com> Message-ID: <49114151.10908@sun.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org Hi, Here is some description and performance results for the new Lustre ADIO driver. You might be interested. The main purpose of the new lustre adio driver is to collect the small size I/O requests into fewer number of larger ones according to Lustre's striping feature with low overhead automatically. We also provide some hints for performance tuning. In the following graph, the recent FLASH I/O benchmarking result shows that the new driver performs much better than the old one, especially for a large-scale system. In this test, FLASH I/O blocksize is 4*4*4 that means each 3 clients write 40KB, 40.5KB and 42KB respectively. The I/O operation iteration (nvar) is set to 1024. HTH, LiuYing emoly.liu wrote: > sending to lustre-devel@ as well > > Hello, > > A new Lustre ADIO driver for MPICH2-1.0.7 is available now, which is > co-developed by SUN Lustre group and Oak Ridge National Lab. (The > patch is attached.) > > Any feedback and performance results are welcomed. > > Thanks, > LiuYing > > ------------------------------------------------------------------------ > > _______________________________________________ > Lustre-discuss mailing list > Lustre-discuss at lists.lustre.org > http://lists.lustre.org/mailman/listinfo/lustre-discuss -- Best regards, LiuYing System Software Engineer, Lustre Group Sun Microsystems ( China ) Co. Limited -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: flashio_perf.png Type: image/png Size: 26625 bytes Desc: not available URL: