Thursday, October 29, 2015

LibGL Error. Unable to load driver

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

libGL error: unable to load driver:
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

Tuesday, October 27, 2015

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

Saturday, October 3, 2015

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