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FGRP application v 1.07 (OPENCL) feedback thread |
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FGRP application v 1.07 (OPENCL) feedback thread
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Author | Message |
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Richard Haselgrove Send message Joined: 10 Dec 05 Posts: 450 Credit: 5,409,572 RAC: 0 |
A few observations about the Gamma-ray pulsar search #2 v1.07 (FGRPopencl-nvidia) app performance, See message 112492 (earlier in this thread) for a visual demonstration of that, and Bikeman's reply for an explanation. I wouldn't worry about RAC at a beta project like this - it's a work-in-progress. |
Alez Send message Joined: 8 Apr 13 Posts: 7 Credit: 4,335,055 RAC: 0 |
Recently all the tasks for this app on this computer https://albert.phys.uwm.edu/show_host_detail.php?hostid=6867 have started error-ing after @ 2 sec with an Exit status 11 (0xb). Previously had no problems running. Has anything changed on your side or is the error code reflecting something that has changed on my side ? Have tried resetting the project but again it just throws errors. Everything was fine up until 13/6/13 by which time I had completed a few 100 units, but haven’t managed a single successful unit since. Any ideas I can try ? |
Holmis Send message Joined: 4 Jan 05 Posts: 104 Credit: 2,104,736 RAC: 0 |
Did you changed anything on your machine around the time the problems started? Updated the graphics driver? Overheating? |
Alez Send message Joined: 8 Apr 13 Posts: 7 Credit: 4,335,055 RAC: 0 |
No, nothing changed my side as far as I'm aware. I believe that signal 11 errors are usually memory related ( unlikely as the card in question runs primegrid and gpugrid no problem ), problem with 64bit system running 32 bit apps ( have checked 32 bit libs are still installed ) or bad work units. Am I missing anything obvious ? |
Karlik Send message Joined: 6 Apr 06 Posts: 1 Credit: 100,179 RAC: 0 |
I'm not sure if it is a bug but I can see: http://albert.phys.uwm.edu/workunit.php?wuid=405509 The WUs on opencl-nvidia are validated together and my WU (CPU) is marked as invalid. It might be that my computer sent wrong answer but it is the only invalid WU in albert (on eintein I did't have invalid WUs too as I remember). |
Jacob Klein Send message Joined: 6 Nov 11 Posts: 16 Credit: 2,938,967 RAC: 0 |
I think I received my first task of this type: Gamma-ray pulsar search #2 hsgamma_FGRP2 version: 1.07 I have 3 GPUs: GTX 660 Ti, GTX 460, GTS 240. I have GPU Exclusions such that the Albert tasks can only run on the GTS 240. That being said, I'm noticing VERY LOW GPU utilization on my GTS 240, for this app. It fluctuates between 4% and 10%, and that's all. Even if that is the only task being processed, it never gets more than 10% GPU utilization. It does use a full CPU core while processing. Is this low GPU utilization on this GTS 240... expected behavior for this app? Thanks, Jacob |