On 2010-12-13, at 18:35, Nihir Parikh wrote: > Hello Wang Yibin, > Can I please get step by step information on how to run lnet_selftest?
This is described in the Lustre manual. > From: Wang Yibin [mailto:[email protected]] > Sent: Sunday, November 21, 2010 6:12 PM > To: Nihir Parikh > Cc: [email protected] > Subject: Re: [Lustre-discuss] Help > > > $B:_(B 2010-11-20$B!$>e8a(B8:39$B!$(B Nihir Parikh $B<LF;!'(B > > > Hello Wang Yibin, > Thanks for getting back to me. Yes, S2 and S3 can ping each other using lctl > ping. > > This indicates that your routing is work as expected. > > > I was using nuttcp test and I also tried ib tests that comes with the IB > utilities. I will lnet-selftest. > > These utilities do not understand lnet protocol so they won't work. > > > > My goal was to measure the bandwidth when it has to reach across different > network. Are there any such tests specific to lustre? > > Lnet has its own testsuite which is called lnet self-test. > To measure the bandwidth, you can load lnet_selftest module on your nodes and > execute lst in brw mode. > > > > Thanks > Nihir > > From: Wang Yibin [mailto:[email protected]] > Sent: Thursday, November 18, 2010 6:32 AM > To: Nihir Parikh > Cc: [email protected] > Subject: Re: [Lustre-discuss] Help > > Hi, > > $B:_(B 2010-11-17$B!$>e8a(B9:17$B!$(B Nihir Parikh $B<LF;!'(B > > > > > Now my problem is to run some network tests from S2 $(D+"(B S3 and S3 > $(D+"(B S2 to measure the bandwidth but somehow both S2 and S3 complain > that network is unreachable. What am I doing wrong? > > Your configuration seems OK to me. Can S2 and S3 ping each other using 'lctl > ping'? > What kind of network test did you do? Note that only lustre LNET can do the > routing. > There's a script in lustre testsuite that's specifically for testing the > network connectivity - lnet-selftest.sh. > > > > > Thanks > Nihir > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss Cheers, Andreas -- Andreas Dilger Lustre Technical Lead Oracle Corporation Canada Inc. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
