Typical Problems and Solutions

Problem : SSH login

Description :

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA1 host key has just been changed.
The fingerprint for the RSA1 key sent by the remote host is
2b:f3:76:d4:26:82:b5:c6:59:e6:93:e9:dd:d8:b1:75.
Please contact your system administrator.
Add correct host key in /home/udo/.ssh/known_hosts to get rid of this message.
Offending key in /home/udo/.ssh/known_hosts:245 
RSA1 host key for n180 has changed and you have requested strict checking.
Host key verification failed.

Solution :

Solution is written in the problem (see  line "Offending key ..." ) i.e. edit file  ~/.ssh/known_hosts 
and remove line number 245.

Problem : Missing Libraries

Description :

Any complains about Intel libraries.

Solution :

Please  modify your .bashrc  file on a compute node  adding the following lines 
[use command "n01" to login]:

export SMPD_OPTION_NO_DYNAMIC_HOSTS=1
export OMP_NUM_THREADS=1
source /etc/profile.d/ifortvars_intel64.sh
source /opt/intel/Compiler/11.1/072/mkl/tools/environment/mklvarsem64t.sh