Dedication

HPC doc.

Troubleshooting

Illegal instruction

If you run a program and it crashes with an error “Illegal instruction” the reason is probably because you have compiled your program on login1 and your program is running on an older server on which the cpu lacks some specialized functionnality that were used during the compilation on login1. N.B. : login1 was running CentOS6, as of August 2019 all compute nodes run CentOS7

You have two possibilities:

  1. Recompile your program with less optimization
  2. Only run your program on newer servers. See Specify the cpu type you want and Compute nodes.

Connection refused

When you try to connect to Baobab using ssh or sftp, if you see the message:

Connection refused

it may happens because you tried to connect many time with wrong credentials and your ip adress was blacklisted. Your ip will be unblocked automatically after 15minutes.

Your Baobab password is your ISIS password and we don’t manage it. If you forgot your password or you want to check if it is correct, you may use the following service provided by the CAD (helpdesk):

mdp.unige.ch

Cannot change locale (UTF-8)

If you have this message when connecting from a mac terminal:

-bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory

You can solve the issue by following the steps #1 here

Do not forget to close all the open terminal on your mac and relaunch.