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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:10.0pt'>Hello,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>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. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>First, some basic info regarding the environment:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>User’s System: Dell Precision T7810<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Video Card: Nvidia Quadro K620<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>OS: RHEL 6.6<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Kernel: 2.6.32-573.22.1.el6.x86_64<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Driver - el repo (361.42): kmod-nvidia.x86-64 nvidia-x11-drv.x86_64 nvidia-detect.x86_64<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>Driver - Nvidia.com: </span><span style='font-size:9.0pt;font-family:"Trebuchet MS","sans-serif";color:black;background:white'>NVIDIA-Linux-x86_64-361.42.run<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Trebuchet MS","sans-serif";color:black;background:white'>Nouveau driver - blacklisted in /etc/modprobe.d/blacklist.conf<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>I’ll try to be descriptive of the situation without being long-winded:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>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. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>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?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>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.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Evan<o:p></o:p></p></div><P>WILLIAMS INTERNATIONAL THE POWER OF VISION<br></P>
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