COLLATZ

Post by **aardvark** » Tue Aug 11, 2009 3:22 pm

Jockmacmad2

Thanks for your feedback.

I had forgotten NVIDIA's old gem of effectively "speed stepping" to conserve power. But I am checking the clocks with GPU-Z and NVIDIA monitoring tool, and no change in clock speed showing.

I will look further into this just to prove to myself that clocks are not affected.

What had kicked this off was that I had notice a gain of maybe 5-10 % in my GPUGRID WU's when the GPU's had full use of the CPU's. This would more or less cover the credits lost by not running the WCG WU's. But there is a significant saving in power used by the CPU.....

Nightlord · Post by **Nightlord** » Wed Aug 12, 2009 12:22 am

Yes, you can use Riva Tuner to force the clocks (and fans for that matter), but you also need to tell Riva that you are using a driver that is OK.

http://www.overclock.net/nvidia/423880- ... cking.html

Don't forget to set load on boot and one thing in the above article misses out is that to make sure you don't enter the driver version in Hex (little button marked 0xD/0xA when editing the registry)!

I'm still not convinced that it works, the clocks on my GTX260 under XP still seems skittish on Seti, while Collatz appears off-line, and for the life of me I can't run GPUGrid any more.

Nightlord · Post by **Nightlord** » Wed Aug 12, 2009 7:28 am

Sorry for replying to my own post.....

It definitely is still down clocking even after following the above procedure. Came into the office this morning and the GTX260 is running at 400MHz while crunching Seti

No news on Collatz, ho hum.

Post by **aardvark** » Wed Aug 12, 2009 6:47 pm

and for the life of me I can't run GPUGrid any more.

.

There appears to be an on going problem with some gtx 260's not running the new cuda 2.2 WU's. This is not something that I have experienced myself. Although my other machine with an 8800GT was failing all WU's until I reverted to the 185.16 driver (or there abouts

). The only problem the 8800GT has now is my eldest taking over for his on-line activities

I used Riva Tuner quite a bit in the past. It was usefull for switching on the "redundant" cores on my 7600GT. I know there are redundant cores on the GTX260 as it is effectively a crippled GTX280, but I think they are hardware disabled as opposed to software in the video card BIOS. Something else for me to dig into. It would be nice if they could be switched on

Post by **jockmacmad2** » Wed Aug 12, 2009 7:45 pm

Is your 260 a 192 or 216 shader model?

Mine is a 192 and GPUGrid is a no no.

Post by **aardvark** » Wed Aug 12, 2009 8:54 pm

216 shaders. XFX GTX260's factory clocked to 680 MHz core & 1466 MHz on the shaders.

Nightlord · Post by **Nightlord** » Wed Aug 12, 2009 11:03 pm

I've just dropped back to 185.85 drivers on the GTX260. It means I won't get the Cuda 2.3 speedup, but it should mean the clocks are a bit more stable. If that's right, it's a trade off between underclocking, or loosing speed.

Collatz is back, I might try it on that too

Post by **jockmacmad2** » Mon Aug 17, 2009 7:48 pm

The number with the most steps so far is 2,361,183,863,442,119,416,993 with 2,059 steps which has been confimed by the server. The two individuals who found the above number are Top Viking and Merlyn. Congrats!

steve · Post by **steve** » Mon Aug 17, 2009 10:11 pm

jockmacmad2 wrote:
The number with the most steps so far is 2,361,183,863,442,119,416,993 with 2,059 steps which has been confimed by the server. The two individuals who found the above number are Top Viking and Merlyn. Congrats!

WHAT!

I'm Famous or is it Infamous?

Nightlord · Post by **Nightlord** » Wed Sep 09, 2009 12:00 am

Changing tack a little, I guess those who are crunching it are aware that Collatz is down.

Any rumours about when it may be back? My GTX260 will run dry overnight

steve · Post by **steve** » Wed Sep 09, 2009 2:12 am

MYsql Database corrupted may be down for sometime

Post by **aardvark** » Wed Sep 09, 2009 6:16 pm

Any rumours about when it may be back? My GTX260 will run dry overnight

Milkyway CUDA runs superb on the GTX260. Gives me a better return than GPUGRID. I would say about 38k on my pair of 260's a opposed to 32k for GPUGRID.

Nightlord · Post by **Nightlord** » Wed Sep 09, 2009 8:12 pm

Collatz home page

September 9, 12:31 CST
The database has been moved back to the original server due to numerous connection issues. Hopefully, it is back in business for good this time.

Lock and load.....

8)

Post by **Megacruncher** » Wed Sep 09, 2009 11:20 pm

Collatz seems to working okay except they aren't exporting Stats yet. Once they are some of us (such as me

) can expect a nice wee boost!

I've found the return to be similar to GPUGrid with the main advantage being that GPUGrid WUs seem to be awful prone to errors on all but my newest 260.

Nightlord · Post by **Nightlord** » Fri Sep 18, 2009 11:11 am

Overnight Collatz has upgraded to a new app that requires CUDA 2.3. It is also much faster hence they have reduced the credits awarded to existing WU's. My GTX260 was only earning around 60 credits per hour this morning:shock:

See the dramatic effect here: My Collatz in Temujin's stats

You should abort any pre-exisitng WU's. They will be re-issued on the new app.

The thread in the Collatz forum is over 100 posts long already and that's in less than a day!

http://boinc.thesonntags.com/collatz/fo ... .php?id=68

The new app running CUDA 2.3 requires upgraded drivers, minimum 190.38. I'm downloading 190.62 now, but also I'm worried. Last time I tried that on GPU Grid I encountered the Nvidia downclock bug and couldn't fix it.

/Edit

If upgrading from 185.xx etc, you need to reset the project to force download of a new cudart.dll.

It's running, I'll keep an eye on the downclocking.

/Edit #2
Holy crunchathon batman! The first WU completed with 785 credit for a little under 30 minutes wall time, that means 43k per day!

Still running at stock clock speed too....no downclocking yet

Post by **ianmbaker2** » Fri Sep 18, 2009 10:26 pm

I've just recently (this week) started running Collatz. The reduction in credit I saw when I got in from work was frightening till I tried the new app for it. I was surprised that it ran OK on my 9800GT, as MWGPU tells me it isn't CUDA 2.3 compatible. Collatz is giving me 500+ credits for 35 mins on each WU. That's worth about 18k a day for me.

I can see a shortage of WUs on this project when word gets out!

Ian

Post by **aardvark** » Sat Sep 19, 2009 12:23 am

Its sweet.....546 credits for 19 minutes work, So two cards X 42138 credits per day, Thats doubled my ouyput

Post by **Megacruncher** » Tue Oct 06, 2009 6:41 pm

The Collatz Bonanza continues!
I've averaged 166K per day over the last week for Collatz! On NVidia & ATI alike it is superb.

Post by **aardvark** » Thu Oct 08, 2009 12:30 am

I'm getting about a 30% fail on Collatz work units (CUDA 2.3), most fail within first minute or two, but some fail when almost completed. Has anybody else got this issue ?
Could be a driver issue, I'm using the latest NVIDIA drivers.

Post by **aardvark** » Thu Oct 08, 2009 5:46 pm

I had a look on the Collatz forum, one suggested fix was a "reset" of the project, So I tried that and now its "jist like a boucht een". Not one failure since reset, and heaps of pending credits to come

Post by **Megacruncher** » Thu Oct 08, 2009 11:13 pm

Excellent. Resetting is always a good thing to try first- so much quicker and less risky than upgrading your drivers or client!

Post by **aardvark** » Mon Oct 12, 2009 7:01 pm

Looks like the Collatz server is down, first noticed about ten minutes ago. Hope it comes back up soon

Post by **Megacruncher** » Mon Oct 12, 2009 7:20 pm

Looks like the Collatz server is down, first noticed about ten minutes ago. Hope it comes back up soon

I certainly hope so - Collatz is our biggest project just now, providing 85% of our current credit!

Post by **aardvark** » Mon Oct 12, 2009 8:26 pm

Back up again. Perhaps it was a service period ?

Post by **Reeltime** » Tue Oct 13, 2009 12:40 pm

I got a problem with Collatz on one of my machines. Or should I say I have a problem with drivers. Keep getting the message that I need to upgrade my driver on the NVIDIA card. Only problem being that NVIDIA do not suport Windoze 2000. Anyone know hw to get round this, because at the moment, nothing will run on that computer GPU wise

Post by **aardvark** » Tue Oct 13, 2009 8:59 pm

Looks like a change of OS is needed

You could always try Linux, or see if anybody has an old copy of XP etc that they no longer use.
Other than that I can't think of anything that would work. Windows 7 is on sale to students for Â£30, so if you know any students that may be able to help. All that is needed is a registered Uni' email address.

Post by **Reeltime** » Wed Oct 14, 2009 5:24 am

might try linux, is ubuntu the best/simplest system to install? 32 or 64? Grr. I hate being new to things lol

Post by **Megacruncher** » Wed Oct 14, 2009 8:47 am

NVidia don't officially have CUDA drivers for W2K but I always found that the WXP 32 bit ones worked fine in my, only recently retired, W2K cruncher.

Post by **Reeltime** » Wed Oct 14, 2009 7:07 pm

Megacruncher wrote:NVidia don't officially have CUDA drivers for W2K but I always found that the WXP 32 bit ones worked fine in my, only recently retired, W2K cruncher.

Thank you, managed to find an XP driver that worked, back crunching Collatz again :)

Post by **rowpie** » Fri Nov 20, 2009 7:38 pm

is this project up or down right now? trying to get some CUDA love going on here after getting peeved with gpu grid and i cant see the web site.

Post by **ianmbaker2** » Fri Nov 20, 2009 7:41 pm

Yep, Collatz has crashed and burned. I don't think it could stand the strain of all the ex-MW crunchers hitting it for tasks for their ATI cards.

Ian

Post by **aardvark** » Sun Nov 22, 2009 2:11 am

Collatz now back online, here come the credits

Post by **Megacruncher** » Sun Nov 22, 2009 11:00 am

The problems with Collatz were a triple whammy of basic instability, too many Milkyway refugees & their chief server-kicker going on holiday for 2 weeks.

He came back just as I was resigned to switching the nVidias to Seti and having the ATIs idle.

The credits are a trickle rether than a torrent so far but hopefully we will get a few million from it later today.

PinkPenguin · Post by **PinkPenguin** » Sun Jan 10, 2010 6:16 pm

There go my first CUDA WUs on a MAC OS X system thanks to the guys on Collatz

Not that I'll be impressing anybody it's only a 9600M GT and it basically means I have to reduce the CPU unit's to one at a time so as not to fry the keyboard...

Anchula-Mark · Post by **Anchula-Mark** » Tue Jun 22, 2010 5:46 pm

Collatz is back up but you need a boinc restart

The power is back on, and the network is now up as well. For the next week or so, Collatz will be testing an alternate Internet provider. That means that the IP address has changed so you will need to restart your BOINC client in order to upload your results and get more work. I would appreciate any feedback as to how well the new connection is working or not working, whichever the case may be.

The Scottish Boinc Team

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