[mvapich-discuss] mvapich2 mpirun_rsh bug

[Tatek]

Thanks!!
 
Tatek> Date: Mon, 13 Oct 2008 12:08:31 -0400> From: sridharj at cse.ohio-state.edu> To: tgetachew at hotmail.com> CC: mvapich-discuss at cse.ohio-state.edu> Subject: Re: [mvapich-discuss] mvapich2 mpirun_rsh bug> > Hi Tatek,> > On further investigation, we saw that the path handling was different> between MVAPICH and MVAPICH2 as you pointed out. Thanks for this report.> We've updated mpirun_rsh on MVAPICH2 to mimic the behavior on MVAPICH.> > The update will be available in the upcoming release of MVAPICH2 1.2. It is> also available on the svn at:> https://mvapich.cse.ohio-state.edu/svn/mpi/mvapich2/trunk> > Regards,> Jaidev> > On Fri, Oct 10, 2008 at 11:12:15PM +0000, Tatek wrote:> > > > Hello All,> > > > There seems to be a bug with mvapich2 and mpirun_rsh command. Once I> > install mvapich2, to execute mpiun_rsh command, I have to give the> > full path of the mpirun_rsh or it will not execute. For example, I> > was trying to run mpiBench and after setting the PATH for the bin and> > LD_LIBRARY_PATH, I would get the following> > > > [root at t2k-0007 mpibench-0.1-3]# mpirun_rsh -np 2 -hostfile hosts5> > ./mpiBench -i 100 Allreduce> > /usr/bin/env: mpispawn: No such file or directory> > Child exited abnormally!> > cleanupKilling remote processes.../usr/bin/env: mpispawn: No such file> > or directory DONE> > > > note that "which mpirun_rsh" shows the correct PATH so I had the PATH> > set correctly> > > > [root at t2k-0007 mpibench-0.1-3]# which mpirun_rsh> > /global/usr/mpi/mvapich2-1.2/pgi/bin/mpirun_rsh> > > > If I give the full PATH then no problem.> > > > [root at t2k-0007 mpibench-0.1-3]#> > /global/usr/mpi/mvapich2-1.2/pgi/bin/mpirun_rsh -np 2 -hostfile hosts5> > ./mpiBench -i 100 Allreduce START mpiBench 0 : ddn-0268> > 1 : ddn-0302> > Allreduce Bytes: 0 Iters: 100 Avg: 2.9612 Min: 2.9612 Max: 2.9612 Dim:> > 0 Ranks: 2> > Allreduce Bytes: 8 Iters: 100 Avg: 6.4301 Min: 6.4087 Max: 6.4516 Dim:> > 0 Ranks: 2> > > > After some investigation, one of my colleagues figured out the issue> > was that MVAPICH2 mpirun_rsh command gets the directory name from the> > name of the executable (passed to the program as the first argument)> > and starts mpispawn using this path. If the full path name is not> > supplied, the mpispawn program is started without a path and can't be> > found unless it happens to be in the default login path of the> > user. We think this is a bug in MVAPICH2's mpirun_rsh. It is> > reasonable to expect that if the MVAPICH2 binary directory is the> > PATH, issuing an mpirun_rsh command should work.> > > > We have a workaround for now by either using the full PATH or using> > wrapper scripts but ideally, this should work same as it did with> > mvapich1.> > > > Best Regards,> > > > > > Tatek Getachew> > > > Solutions Engineer, HPC Solutions Engineering> > > > Appro International, Inc.> > > > 446 South Abbott Ave> > > > Milpitas, CA 95035> > > > 408-941-8100 x504 (office)> > > > 408-640-9050 (cell)> > > > [1]tgetachew at appro.com> > > > > > > > > > _________________________________________________________________> > > > Get more out of the Web. Learn 10 hidden secrets of Windows Live.> > [2]Learn Now> > > > References> > > > 1. mailto:tgetachew at appro.com> > 2. http://windowslive.com/connect/post/jamiethomson.spaces.live.com-Blog-cns!550F681DAD532637!5295.entry?ocid=TXT_TAGLM_WL_getmore_092008> > > _______________________________________________> > mvapich-discuss mailing list> > mvapich-discuss at cse.ohio-state.edu> > http://mail.cse.ohio-state.edu/mailman/listinfo/mvapich-discuss> 
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