GPU & CPU in use?

Questions and Answers : Macintosh : GPU & CPU in use?

Author	Message
Machina Send message Joined: 19 Feb 11 Posts: 2 Credit: 348,288 RAC: 42	Message 1301115 - Posted: 2 Nov 2012, 1:22:03 UTC
	10.6.8 / MacPro / NVIDIA GeForce 8800 GT (512) / Seti@home only As I understand it, a single Boinc project will either run on the GPU or the CPU but not both. As stated above, I am only running Seti but it seems that both are in use. Prefs are set to use 100% of all the CPUs (which it is) but the WUs are completing MUCH faster than before I upgraded to the CUDA card. BOINC recognizes the GPUs and when I view properties for Seti in the manager, it states that GPU work is deferred for various hours but not for CPU work. The NVIDIA card heats up during crunching, which makes me wonder if I am using both or is the GPU even in use at all? Thanks for the help.
	ID: 1301115 ·

arkayn Volunteer tester Send message Joined: 14 May 99 Posts: 3089 Credit: 40,389,781 RAC: 66,211	Message 1301136 - Posted: 2 Nov 2012, 2:53:25 UTC
	Since you are running stock apps and there is no stock GPU app for OSX, you are definitely not using it. Currently there are a couple of projects that do have CUDA apps for OSX. Collatz and Primegrid that I know of for sure. ____________
	ID: 1301136 ·

Machina Send message Joined: 19 Feb 11 Posts: 2 Credit: 348,288 RAC: 42	Message 1301206 - Posted: 2 Nov 2012, 7:55:42 UTC - in response to Message 1301136.
	Somehow I missed that information. I won't worry then. Thank you for your help.
	ID: 1301206 ·

BilBg Send message Joined: 27 May 07 Posts: 2023 Credit: 3,037,300 RAC: 6,298	Message 1301873 - Posted: 4 Nov 2012, 0:03:56 UTC - in response to Message 1301115.
	As I understand it, a single Boinc project will either run on the GPU or the CPU but not both. Wrong - any project will use all devices it have app for (unless you set the opposite): http://setiathome.berkeley.edu/prefs.php?subset=project (Try to run SETI@home or Einstein@Home or ... on Windows computer which have both NVIDIA and ATI GPUs - the tasks/apps will/may run on CPU + 2 GPUs simultaneously (every device with its own task)) The (stock) apps available now at/for SETI@home: http://setiathome.berkeley.edu/apps.php Your tasks are for CPU: http://setiathome.berkeley.edu/results.php?hostid=5821300&offset=0&show_names=0&state=2&appid= (if they were for GPU they would have in the name NVIDIA or cuda or ATI or opencl http://setiathome.berkeley.edu/workunit.php?wuid=1103407304 http://setiathome.berkeley.edu/results.php?hostid=5948046&offset=0&show_names=0&state=3&appid= http://setiathome.berkeley.edu/results.php?hostid=4832843&offset=0&show_names=0&state=2&appid= ) Since you have: Intel(R) Xeon(R) CPU 5150 @ 2.66GHz Number of processors 4 ... you have to see 4 CPU tasks running (CPU tasks do not use GPU at all and GPU can't make them run faster) ____________ - ALF - "Find out what you don't do well ..... then don't do it!" :)
	ID: 1301873 ·

eteela Send message Joined: 27 Aug 12 Posts: 16 Credit: 1,111,885 RAC: 3,374	Message 1303909 - Posted: 9 Nov 2012, 8:21:34 UTC - in response to Message 1301115. Last modified: 9 Nov 2012, 8:26:33 UTC
	I havn't seen anyone yet reporting that they got SETI running on a mac gpu, yet. So instead I loaded, Einstein@home works well on my AMD GPU (1600 RAC) Einstein only uses .5% of one CPU core to keep the GPU happy. I run SETI on my CPU's 4 cores (4900 RAC last month), Optimized seti app from http://www.arkayn.us/forum/index.php?action=tpmod;dl=cat4 iMac (mid 2011) i5-2400S CPU @ 2.50GHz (mid 2011) AMD Radeon HD 6750M 57c/135f 2000rpm fans-nice and quiet while using all 4 cores 100% kinda hard to tell how much of GPU is being used on the mac (anyone got any suggestions?)
	ID: 1303909 ·

Questions and Answers : Macintosh : GPU & CPU in use?