I suppose it could be the switch. Is the only way to test this to swap it out for a different switch?
Thanks again, Brendan ________________________________________ From: Reuti [[email protected]] Sent: Monday, November 12, 2012 4:17 AM To: Brendan Moloney Cc: [email protected] Subject: Re: [gridengine users] Intermittent commlib errors with MPI jobs Am 10.11.2012 um 00:31 schrieb Brendan Moloney: > I spent some time researching this issue in the context of OpenSSH and found > some mentions of similar problems due to the initial handshake package being > too large > (http://serverfault.com/questions/265244/ssh-client-problem-connection-reset-by-peer). > I was dubious that this was my problem but after manually specifying the > cypher to use ('-c aes256-ctr') I haven't seen the problem again. With the > number of submissions I have done now I would expect to have seen the issue > several times, so I am fairly sure it is fixed. Will keep an eye on it of > course. > >>>>> Sometimes I get "Connection reset by peer" >> >> After a long time or instantly? There are some setting in ssh to avoid a >> timeout in ssh_config resp. ~/.ssh/config: >> >> Host * >> Compression yes >> ServerAliveInterval 900 > > Seems to happen fast enough that it is not a timeout issue. > >>> I am indeed using SSH with a wrapper script for adding the group ID: >>> >>> qlogin_command /usr/global/bin/qlogin-wrapper >>> qlogin_daemon /usr/global/bin/rshd-wrapper >>> rlogin_command /usr/bin/ssh >>> rlogin_daemon /usr/global/bin/rshd-wrapper >>> rsh_command /usr/bin/ssh >>> rsh_daemon /usr/global/bin/rshd-wrapper > >> It's also possible to set different methods for each of the three pairs. So, >> rsh_command/rsh_daemon could be set to builtin and the others left as they >> are. Would this be appropriate for your intended setup of X11 forwarding? > > So using the builtin option would still allow enforcement of memory/time > limits on parallel jobs? The ones set by SGE - yes. To the original problem: can it be a problem in the switch? -- Reuti _______________________________________________ users mailing list [email protected] https://gridengine.org/mailman/listinfo/users
