Thanks Edwards As you suggested, we switched off X11 forwarding option in /etc/ssh/ssh_config file and we are able to remove the warnings(also the time it was taking for execution has reduced considerably).
thanks again. ullas ----- Original Message ----- From: "Michael Edwards" <[EMAIL PROTECTED]> To: "ullas ckm" <[EMAIL PROTECTED]> Subject: Re: [Oscar-users] warning during execution of mpi programs why?(no ssh problem). Date: Thu, 24 Mar 2005 07:39:23 -0600 > > The fix you are looking at only turns off X11 forwarding for the C3 > package (cexec,cshutdown,etc) and not for all programs. It is > mentioned in conjunction with that package because it is the place > most people see the error. > > I am a bit confused as to why lam is giving you this warning, but you > can turn it off for all ssh connections by changing the file > > /etc/ssh/ssh_config > > It is very well commented and it should be clear which line you > need to change. > > I don't have time to find the exact line syntax at the moment, but if > you have problems I will look it up this evening. > > On Thu, 24 Mar 2005 18:23:39 +0800, ullas ckm <[EMAIL PROTECTED]> wrote: > > Thanks Edward > > > > Its oscar 4.0 on Redhat 9.0. > > The fix we tried was looking something like this, > > > > export C3_RSH='ssh -x' > > cexec uptime. > > > > Actually this warning appears only when executing mpi programs in > > oscartst login,but as for as root login is considerd we are not > > facing this problem.One more thing is,we are not connected to > > public NTP servers instead we are using a local one.can this be a > > reason for the warning. > > > > thanks in advance > > ullas > > > > > > ----- Original Message ----- > > From: "Michael Edwards" <[EMAIL PROTECTED]> > > To: "ullas ckm" <[EMAIL PROTECTED]> > > Subject: Re: [Oscar-users] warning during execution of mpi > > programs why?(no ssh problem). > > Date: Thu, 24 Mar 2005 00:19:48 -0600 > > > > > > > > What version of Oscar are you using, and what distro? > > > > > > How did you implement the fix in the docs and what effect did they have? > > > > > > Having the X11 stuff enabled is not neccesary anyway, since X isn't > > > installed on the nodes. So you might as well turn it off unless you > > > use another system this way from the head node. > > > > > > Anyway, a little more detail might help us help you with your problem. > > > > > > > > > On Tue, 22 Mar 2005 18:36:36 +0800, ullas ckm <[EMAIL PROTECTED]> wrote: > > > > hi > > > > > > > > We have some problems with communication between the processes > > > > when executing mpi programs.during execution of mpi programs we > > > > are getting the following warning which is slowing down the > > > > performance of the application. > > > > mpirun -np 8 ./a.out > > > > Warning: No xauth data; using fake authentication data for > > X11 forwarding. > > > > Warning: No xauth data; using fake authentication data for > > X11 forwarding. > > > > Warning: No xauth data; using fake authentication data for > > X11 forwarding. > > > > Warning: No xauth data; using fake authentication data for > > X11 forwarding. > > > > Warning: No xauth data; using fake authentication data for > > X11 forwarding. > > > > Warning: No xauth data; using fake authentication data for > > X11 forwarding. > > > > Warning: No xauth data; using fake authentication data for > > X11 forwarding. > > > > > > > > we have tried the rectifcation given in install.pdf. also We are > > > > not facing any problems with ssh login and cexec tools. > > > > Pls help us. > > > > > > > > regards > > > > ullas > > > > -- > > > > ______________________________________________ > > > > Check out the latest SMS services @ http://www.linuxmail.org > > > > This allows you to send and receive SMS through your mailbox. > > > > > > > > Powered by Outblaze > > > > > > > > ------------------------------------------------------- > > > > SF email is sponsored by - The IT Product Guide > > > > Read honest & candid reviews on hundreds of IT Products from real users. > > > > Discover which products truly live up to the hype. Start reading now. > > > > http://ads.osdn.com/?ad_ide95&alloc_id396&opclick > > > > _______________________________________________ > > > > Oscar-users mailing list > > > > [email protected] > > > > https://lists.sourceforge.net/lists/listinfo/oscar-users > > > > > > > > -- > > ______________________________________________ > > Check out the latest SMS services @ http://www.linuxmail.org > > This allows you to send and receive SMS through your mailbox. > > > > Powered by Outblaze > > > > ------------------------------------------------------- > > This SF.net email is sponsored by Microsoft Mobile & Embedded DevCon 2005 > > Attend MEDC 2005 May 9-12 in Vegas. 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