PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise
1) Message boards : Generalized Fermat Prime Search : Getting CPU Work when only GFN-CUDA selected (Message 53616)
Posted 3185 days ago by Profile [SG-2W]AmorphProject donor
I think there is a bug in GFN workunit distribution. I am wondering why my PC is running Genefer workunits on CPU and GPU. On preferences page I just had GFN short tasks CUDA and PPS LLR CPU/CUDA selected.
The next problem I have with these GFN workunits: When Boinc pauses a GFN CPU workunit it doesnt get paused and the newly started task is running but gets 0% CPU.
2) Message boards : Generalized Fermat Prime Search : World Record ?? genfer long task (Message 51404)
Posted 3237 days ago by Profile [SG-2W]AmorphProject donor
My first, big GFN Workunit is finished, but now I hope there is no problem with validating these results. Otherwise a week of crunching would be wasted. http://www.primegrid.com/workunit.php?wuid=253623372 I am wondering why this result doesn't get validated
3) Message boards : Generalized Fermat Prime Search : GeneferCUDA for BOINC beta testing (Message 48890)
Posted 3271 days ago by Profile [SG-2W]AmorphProject donor
At the moment GFN is running stable on my GPU. Memory Clock set to 1700 MHz down from 1950 MHz. Next I will try to set the clock back up step by step, let's see how far I can go.
4) Message boards : Generalized Fermat Prime Search : GeneferCUDA for BOINC beta testing (Message 48822)
Posted 3272 days ago by Profile [SG-2W]AmorphProject donor

Yes! (forgive my excitement, but it is nice to have the 192-bit GTX 460 in the game as this might get us closer to the memory errors found on the GTX 550 Ti and other cards like it) Also, just to verify, yours is a GTX 460 with 192-bit bus and 1GB of video RAM (not the 768mb version), correct?

Getting some work to complete with no real adjustments to the card may happen (I was getting about 50% completing normally on the default clocks with superclocked 550). Keep your clocks as you had them for core and shader. Also, keep the default block size set at 7. Drop your memory clock significantly and see if that corrects things. On the GTX 550's, we dropped to 1700 clock with no errors and some have been able to gradually increase the memory clock up to 2100. I don't think it is a fixed clock level, however, but more likely a ratio of timings with whatever is going on with the rest of the card (e.g., core and shader clocks, memory load, etc.).

Also, if you are interested, I am sure that Mike would love the opportunity to see one of these 192-bit 1GB version 2 GTX 460 cards under some of his testing applications that we have been trying out on the GTX 550's.


unfortunately I made a mistake with the 192-bit bus. It's really 256-bit there was just a site that stated it was 192-bit.
5) Message boards : Generalized Fermat Prime Search : GeneferCUDA for BOINC beta testing (Message 48806)
Posted 3272 days ago by Profile [SG-2W]AmorphProject donor

Your card is overclocked considerably (above the stock 1350 shader clock--manual OC or factory OC is not different). Three problems are the most likely, and I'd approach solutions to those in this order:

1) Heat...if you are running over 80C on the card, get it lower than that. Increase the GPU fan if you can, but often this won't help much if the conditions are the room or computer case that are creating the heating problem. Try opening up the case and see where your temps are at (or a window if you are in the northern hemisphere to let a little winter in).

2) If not heat, the higher shader clocks may just be enough to cause errors (not all GTX 460--or any other card series for that matter--are created equal). Try dropping shaders by 54MHz increments (from 1620, which is what your 1622 is really running at--i.e., try it at 1566...then 1512, etc. until it is stable).

3) drop your memory clocks some. This is the fix for the GTX 550 Ti, but some of the 1GB 460 cards are a second version with 192-bit memory bus that may have the same error. If your 460 is one of these, try this fix first.



1.) Temp is ~60°C at 99% Load. I don't think this is too hot.
2.) Clocks are the Stocksettings for this Card (MSI N460GTX Hawk) and I never had a problem with these.
3.) It seems like my Card has a 192-bit memory interface.

I just got a new bunch of workunits and the first one is finished. I didn't change anything on the GPU just set the blocksize setting to 6, results in a .6 usage of one core but its finished.

Edit: blocksize setting back to 0 = error after 10 minutes
6) Message boards : Generalized Fermat Prime Search : GeneferCUDA for BOINC beta testing (Message 48772)
Posted 3272 days ago by Profile [SG-2W]AmorphProject donor
no, no and no

all Wu crashed randomly about 2 to 3 minutes after start.
Right now I'm testing the blocksize setting. With a setting of 9 the actual WU is running about 13 minutes, but the interface lag is very hard.
7) Message boards : Generalized Fermat Prime Search : GeneferCUDA for BOINC beta testing (Message 48766)
Posted 3272 days ago by Profile [SG-2W]AmorphProject donor
<core_client_version>6.12.34</core_client_version>
<![CDATA[
<message>
Die Umgebung stimmt nicht. (0xa) - exit code 10 (0xa)
</message>
<stderr_txt>
GeneferCUDA-boinc 1.06 (CUDA3.2) based on GeneferCUDA 1.049 and Genefer 2.2.1
Copyright (C) 2001-2003, Yves Gallot (v1.3)
Copyright (C) 2009-2011, Mark Rodenkirch, David Underbakke (v2.2.1)
Copyright (C) 2010-2012, Shoichiro Yamada (CUDA)
Portions of this software written by Michael Goetz 2011-2012 (BOINC)
A program for finding large probable generalized Fermat primes.


Command line: projects/www.primegrid.com/primegrid_genefer_1.06_windows_intelx86__cuda32_13.exe -boinc -q hidden --device 0

Priority change succeeded.
GPU=GeForce GTX 460
Global memory=1073741824 Shared memory/block=49152 Registers/block=32768 Warp size=32
Max threads/block=1024
Max thread dim=1024 1024 64
Max grid=65535 65535 65535
CC=2.1
Clock=1622 MHz
# of MP=7
No project preference specified; using SHIFT=7

maxErr during b^N initialization = 0.0000 (0.198 seconds).

Testing b^262144+1...

maxErr exceeded for 609980^262144+1, 0.5000 > 0.4500
20:12:38 (14924): called boinc_finish

</stderr_txt>
]]>
8) Message boards : Generalized Fermat Prime Search : GeneferCUDA for BOINC beta testing (Message 48764)
Posted 3272 days ago by Profile [SG-2W]AmorphProject donor
Just tested GFN on my GPU and all WU are erroring out.

Output file genefer_262144_20027_1_0 for task genefer_262144_20027_1 absent ...
9) Message boards : Number crunching : The Year of the Dragon Challenge (Message 48226)
Posted 3277 days ago by Profile [SG-2W]AmorphProject donor
Ok that is quite a number. I'm already back in to help.
10) Message boards : Number crunching : The Year of the Dragon Challenge (Message 48207)
Posted 3277 days ago by Profile [SG-2W]AmorphProject donor
Leading edge is at n=1.463M.


What does this mean in Workunits left for that goal? approximately


Next 10 posts
[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2021 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 4.17, 4.21, 4.27
Generated 20 Jan 2021 | 8:23:11 UTC