Swapping GPUs
22 Apr 2016 14:15:44 UTC
Topic 198584
(moderation:
Question, because I don't want to mess up any work units.
Can I suspend one of my crunchers, shut it down, and change to a different GPU (still Nvidia) without corrupting in progress work units? Or should I set no new tasks and let it run out of work?
Thinking of taking out a 750 and installing a 960 or 970.
Thanks in advance.
Phil
I thought I was wrong once, but I was mistaken.
Swapping GPUs
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I have swapped Nvidia models and it has picked up where it was with the work units. SHOULD work OK.
RE: Question, because I
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I too have done that successfully before but never on a unit in progress, I let the workunit in progress finish then shutdown the pc and installed the new gpu and it took right off crunching the units.
RE: I have swapped Nvidia
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Me too, I've swapped 600-, 700- and 900-series cards in the middle of progress and tasks will continue smoothly from the last checkpoint.
RE: I have swapped Nvidia
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I run non-identical Nvidia cards on two machines. (a 980 with a 750Ti on one, a 660 with a 750 on another).
When I reboot the machines, I believe I have noticed that in-process tasks are not necessarily resumed by the same card which ran them previously. But such mismatched restarts routinely complete successfully.
Nevertheless, I think that running the cache dry, setting the requested queue depth to very, very, little, and reporting all work before making a major change is a good practice. In the longer ago times I've had more than one problem which had the consequence of boinc racing through my queue, trashing every waiting WU before I could intervene.
Good input from all of you,
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Good input from all of you, but it's a moot point for now. I have a thread over in problems and bugs. That 980 is not playing nice at all. Or rather, the software is not playing nice with the 980.
Linux is turning out to be problematic with a 980. I'm sure it will work, I just need to find the solution.
Looking at the statistics page I see that 980s are ranked near the top using Linux, so SOMEONE has it figured out. I'm just not the guru that I want to be :-)
Phil
I thought I was wrong once, but I was mistaken.
After installing a Nvidia 750
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After installing a Nvidia 750 TI OC on my Windows 10 PC, I finally installed a graphic card on my main Linux box, a 2008 vintage SUN workstation with an Opteron 1210 at 1.8 GHZ. It is a Sapphire HD 7770 and on my first attempt with a driver downloaded from AMD I failed to install. The PC would no longer boot, and I had to start again from installing SuSE 42.1. This time I dared to download the driver from SuSE and the system booted easily.. It is now running SETI@home GPU tasks, but I shall download Einstein@home GPU tasks and see how they compare with those done on the Window 10 PC with its much faster A10-6700 at 3.7 GHZ and 24 GB of RAM, while the SUN has only 8 GB.
Tullio