Overflow or -9s on CUDA32

Message boards : Number crunching : Overflow or -9s on CUDA32
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile Dead4life Project Donor

Send message
Joined: 22 Jun 04
Posts: 5
Credit: 6,490,182
RAC: 2,755
United Kingdom
Message 2001908 - Posted: 10 Jul 2019, 10:08:07 UTC

My only active cruncher seems to have decided to only crunch CUDA32 on GPU, where it used to (nearly exclusively) run CUDA42 tasks, as they were a touch faster than CUDA50 (higher flops). I've just looked at a batch of CUDA32s and they all seem to be -9, but they're counting as valid even against CPU tasks on other hosts that have reported normally.

Is there any way to stop my machine crunching CUDA32s?
ID: 2001908 · Report as offensive
rob smith Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer moderator
Volunteer tester

Send message
Joined: 7 Mar 03
Posts: 17896
Credit: 408,240,501
RAC: 36,263
United Kingdom
Message 2001953 - Posted: 10 Jul 2019, 15:41:47 UTC

Have you just changed anything on that computer (e.g. graphics driver, RAM etc)?
Otherwise, periodically BOINC will try other applications to make sure you have the "best" application (and a grade one pain that is too).
The only way to actually stop this from happening is to move onto the "optimised" applications, but then you become responsible for making sure you update the application if there is a major update (and there isn't one on the horizon just now). The easiest way fo running the optimised applications is to use the installer, there are a number of places where this can be found, "lunatics" & "mikes web" are two that come to mind (sorry I can't give you links just now, but if you google "seti lunatics download" they will be very near the top of the list. Download and run the installer, select the CPU application you need (I would guess that the Intel AVX app would be the one to go for), then select the nvidia applications, and choose the one you want, you may also want to choose to do the "AstroPulse" tasks so select those applications for both the CPU and GPU.

After using the installer let things run for a short time, keeping a close eye on the results, it is possible to choose a CPU application that will only deliver garbage, in which case try one of the higher "sssex" versions.
Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?
ID: 2001953 · Report as offensive
Profile Tom M
Volunteer tester

Send message
Joined: 28 Nov 02
Posts: 3756
Credit: 224,233,993
RAC: 364,913
United States
Message 2002383 - Posted: 13 Jul 2019, 12:30:13 UTC - in response to Message 2001908.  

My only active cruncher seems to have decided to only crunch CUDA32 on GPU, where it used to (nearly exclusively) run CUDA42 tasks, as they were a touch faster than CUDA50 (higher flops). I've just looked at a batch of CUDA32s and they all seem to be -9, but they're counting as valid even against CPU tasks on other hosts that have reported normally.

Is there any way to stop my machine crunching CUDA32s?


I don't see an OpenCL driver on your Windows box. I am told that you need that to run SOG gpu type tasks? You might try downloading a Nvidia driver directly from Nvidia and installing it. Usually it is a good idea to stop Boinc while you are doing so. And re-boot after the driver upgrade.

Windows drivers from Microsoft often do not have everything we need to properly crunch gpu tasks.

Tom
A proud member of the OFA (Old Farts Association)
"Over the hill? WHAT Hill? I don't REMEMBER any hill...." (from a bumper sticker I bought at a truck stop).
ID: 2002383 · Report as offensive
rob smith Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer moderator
Volunteer tester

Send message
Joined: 7 Mar 03
Posts: 17896
Credit: 408,240,501
RAC: 36,263
United Kingdom
Message 2002401 - Posted: 13 Jul 2019, 15:42:23 UTC - in response to Message 2002383.  

Tom - yet again you do not answer the question. The OP is talking about CUDA applications on an "old" processor, so OpenCL and SoG are totally irrelevant.
Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?
ID: 2002401 · Report as offensive

Message boards : Number crunching : Overflow or -9s on CUDA32


 
©2019 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.