GPU task uses 100% of one core

Author	Message
microchip Send message Joined: 25 Feb 09 Posts: 82 Credit: 15,824,247 RAC: 0	Message 51107 - Posted: 18 Sep 2011, 16:09:46 UTC Hi, I'm using a GeForce GT 440 and while checking things up on my Linux cruncher (using "top"), I noticed that whenever a GPU task from MW is running, it consumes 100% of one of my cores. Question is, how to stop this high CPU usage, if possible? Thanks ID: 51107 · Rating: 0 · rate: / Reply Quote

Matt Arsenault Volunteer moderator Project developer Project tester Project scientist Send message Joined: 8 May 10 Posts: 576 Credit: 15,979,383 RAC: 0	Message 51198 - Posted: 23 Sep 2011, 21:27:58 UTC - in response to Message 51107. High CPU usage should happen for a short burst at the end. If it's consistent during the task, I vaguely remember hearing that some recent Nvidia driver versions had high OpenCL CPU usage. ID: 51198 · Rating: 0 · rate: / Reply Quote

arkayn Send message Joined: 14 Feb 09 Posts: 999 Credit: 74,932,619 RAC: 0	Message 51200 - Posted: 23 Sep 2011, 23:31:52 UTC He is running a 280.xx driver, so that is probably the cause. If possible, try going back to a 266.xx version and see if that drops the CPU usage. ID: 51200 · Rating: 0 · rate: / Reply Quote

microchip Send message Joined: 25 Feb 09 Posts: 82 Credit: 15,824,247 RAC: 0	Message 51222 - Posted: 25 Sep 2011, 10:45:31 UTC Last modified: 25 Sep 2011, 10:53:49 UTC Hi, Thanks for answers. From where do I get the 266.xx driver? I looked around on NV's site, but it only offers the latest one [EDIT] Never mind, I found the archive http://www.nvidia.com/object/linux_display_archive.html However, my card is only supported since driver version 270.41.06 http://www.nvidia.com/object/linux-display-ia32-270.41.06-driver.html So I can't try the 266.xx series ID: 51222 · Rating: 0 · rate: / Reply Quote