[elrepo] Nvidia Driver Performance: El Repo vs. NVidia's .run file

[EBradley at williams-int.com]

Hello,

 

I've just recently begun using the Nvidia drivers from el repo installed
via yum as opposed to the manually installed .run packages downloaded
from Nvidia.com for our engineering workstations running RHEL 6. While I
love the fact that the el repo drivers do not need to be reinstalled
after every kernel upgrade, one of my users has just shown me a valid
case in which the performance of the el repo Nvidia drivers is different
from the .run package. 

 

First, some basic info regarding the environment:

 

 

User's System:  Dell Precision T7810

Video Card:  Nvidia Quadro K620

OS: RHEL 6.6

Kernel:  2.6.32-573.22.1.el6.x86_64

Driver - el repo (361.42): kmod-nvidia.x86-64 nvidia-x11-drv.x86_64
nvidia-detect.x86_64

Driver - Nvidia.com: NVIDIA-Linux-x86_64-361.42.run

Nouveau driver - blacklisted in /etc/modprobe.d/blacklist.conf

 

 

I'll try to be descriptive of the situation without being long-winded:

 

When viewing the results of an analysis in Ansys Mechanical with the el
repo driver, a part is displayed and can be manipulated at will when
viewing the general results. If, however, the user selects one of the
'Total Deformation' selections within the results tree, the part
disappears from the Mechanical window. Conversely, when the el repo
drivers are uninstalled and the Nvidia.com driver is installed from the
.run package, the Total Deformation part is displayed as expected,
showing the regions of varying color gradients depicting the areas of
more/less deformation over the surface of the part. I was able to
reproduce this behavior on my test machine, a Dell Precision T5500 with
an Nvidia Quadro K600. 

 

I certainly don't want to come off like I'm blaming the el repo driver
or anything. Rather, I'm interested to know if anyone has experienced
anything similar (I've checked the previous year of posts and will keep
working backward) and also if there's something I may have missed or
misconfigured when installing the drivers via el repo/yum vs. manually
installing the .run package. Basically, did I goof or is there a valid
difference between the el repo drivers and the .run package from
Nvidia.com?

 

Thanks in advance, and I am happy to provide more detail/logs/answer
questions/etc. And my apologies for any legal jargon that is appended to
this message, it is automatically-generated and outside of my control.

 

 

Evan

WILLIAMS INTERNATIONAL                                  THE POWER OF VISION     

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