How to Display OpenSM Logs

This is a interesting video from Mellanox on How to Display OpenSM Logs from Mellanox Academy

LibGL Error. Unable to load driver swrast_dri.so

If you encounter the error when you run applications, says MATLAB

libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast

You need to install mesa-libGLU*.x86_64 and mesa-libGLU*.i686

yum install  mesa-libGLU*.i686 mesa-libGLU*.x86_64

kipmi0 taking excessive CPU resources

This article kipmi0 problem provides a good explanation of kipmi0 problem. But it did not work on me. Instead, this modification of kipmid parameters

# echo 50 > /sys/module/ipmi_si/parameters/kipmid_max_busy_us

This keep the kipmi0 to 5% of the CPU

MAUI secondary client lost connection to primary MAUI host

If you are using Secondary Submission Node for torque and wish to use MAUI as a scheduler,  you may encounter the error  

ERROR:    lost connection to server
ERROR:    cannot request service (status)

The solution is quite simple, make sure the the time are the same. This is the most common cause of lost connection.

Related Information:

1. Bad UID for job execution MSG=ruserok failed validating user1 from ServerNode while configuring Submission Node in Torque

How To Tune Your Linux Server Using mlnx_tune Tool

This is a wonderful video from Mellanox

  

How To Tune Your Linux Server Using mlnx_tune Tool from Mellanox Technologies on Vimeo.