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TAS-member thread for April 2009: Rosetta, Milkyway and SHA Collision

Page 2 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.
Originally posted by: caferace
Just a reminder for those of you perhaps new to crunching Milky Way. The optimized (and authorized 🙂) apps are sooo much more efficient than the stock apps. Even more so if you have an ATI HD38xx or HD48xx GPU. When crunching with the GPU BOINC will happily crunch another CPU-bound project simultaneously, so it's the best of both worlds.

get 'em here: http://www.zslip.com

-jim

Any quick installation hints? Please?
 
Originally posted by: petrusbroder
Originally posted by: caferace
Just a reminder for those of you perhaps new to crunching Milky Way. The optimized (and authorized 🙂) apps are sooo much more efficient than the stock apps. Even more so if you have an ATI HD38xx or HD48xx GPU. When crunching with the GPU BOINC will happily crunch another CPU-bound project simultaneously, so it's the best of both worlds.

get 'em here: http://www.zslip.com

-jim

Any quick installation hints? Please?
For CPU or GPU? GPU is slightly more complicated, but the simplest approach is to uninstall ALL old drivers and then install the ATI 8.12 drivers (for all cards <HD4890) and follow the next part post-reboot:

1) Run CPUID to determine max supported tech of CPU and the proper file to download
2) Get proper file from zslip.com, and unzip
3) Shut down BOINC completely
4) Place unzipped files from zslip into projects/milkyway folder. For a BOINC 6.4.7 install on Windows XP, this would be here: C:\Documents and Settings\username\Application Data\BOINC\projects\milkyway.cs.rpi.edu_milkyway as an example
5) Restart BOINC

Note that right now, WU's can sometimes be hard to get. So, Milkyway is a pretty good project to run in conjunction with another.

If you're running a GPU right now, you may need to mash the update button more often to keep it fed. 🙂 In addition, screen response with a GPU can be slow in it's stock config. The app_info.xml file is editable and has some switches that can make things better. I can dig up that info if anyone has an issue, and it's also in the project forum somewhere.

Lastly, currently the project will only allow 6 WU's per core download. So a GPU box will be much happier in a quad with the larger resulting cache.

I suspect that in the next few days the GPU split will (hopefully) be fully up and running.

-jim

 
Originally posted by: caferace
Originally posted by: Philippart
do the gpu apps work on a HD3650 too? I have two of them ready to crunch!
Not currently. Only the HD38xx and HD48xx cards.

That being said, I bought an HD3850 for ~$75 incl. shipping last month and it's capable of ~20k+ ppd if it can get enough WU's. The project is shortly to split into separate CPU/GPU work queues (and scoring) which is intended to make sure everyone has enough to crunch.

see: http://milkyway.cs.rpi.edu/milkyway_gpu/index.php

-jim

20k or 2k? 20k for a $75 card seems outrageously high. It takes a lot of quads to get 20k ppd on any project.
 
Originally posted by: Alyx
Originally posted by: caferace
Originally posted by: Philippart
do the gpu apps work on a HD3650 too? I have two of them ready to crunch!
Not currently. Only the HD38xx and HD48xx cards.

That being said, I bought an HD3850 for ~$75 incl. shipping last month and it's capable of ~20k+ ppd if it can get enough WU's. The project is shortly to split into separate CPU/GPU work queues (and scoring) which is intended to make sure everyone has enough to crunch.

see: http://milkyway.cs.rpi.edu/milkyway_gpu/index.php

-jim

20k or 2k? 20k for a $75 card seems outrageously high. It takes a lot of quads to get 20k ppd on any project.
Double precision calculations are shifting the ppd paradigm...

two-zero kay.

With an E4500 stock-clocked box, the WU (with the highly optimized app) takes ~30 minutes.

With a HD3850 crunching three WU's in parallel?

Running Milkyway@home ATI GPU application version 0.19e by Gipsel
CPU: Intel(R) Core(TM)2 Duo CPU E4500 @ 2.20GHz (2 cores/threads) 2.19997 GHz (732ms)

CAL Runtime: 1.3.145
Found 1 CAL device

Device 0: ATI Radeon HD 3800 (RV670) 512 MB local RAM (remote 28 MB cached + 512 MB uncached)
GPU core clock: 669 MHz, memory clock: 700 MHz
320 shader units organized in 4 SIMDs with 16 VLIW units (5-issue), wavefront size 64 threads
supporting double precision

2 WUs already running on GPU 0
Starting WU on GPU 0

main integral, 160 iterations
predicted runtime per iteration is 408 ms (33.3333 ms are allowed), dividing each iteration in 13 parts borders of the domains at 0 123 246 369 492 615 738 861 984 1107 1230 1353 1476 1600
Calculated about 3.70012e+012 floatingpoint ops on GPU, 6.34181e+007 on FPU. Approximate GPU time 86.4375 seconds.

cut number 0, 40 iterations
predicted runtime per iteration is 51 ms (33.3333 ms are allowed), dividing each iteration in 2 parts borders of the domains at 0 200 400
Calculated about 1.15629e+011 floatingpoint ops on GPU, 5.38792e+006 on FPU. Approximate GPU time 2.92188 seconds.
Calculated about 2.61588e+009 floatingpoint ops on FPU (stars).

WU completed.
CPU time: 20.125 seconds, GPU time: 89.3594 seconds, wall clock time: 269.571 seconds, CPU frequency: 2.19997 GHz

-jim
 
10 000 041 cobblestones reached!

Way to go, Everbody!!!!!

Edit: Too much month left over at the end of the crunch. WCG is next closest to 10M.
 
I'm going out of town for the weekend and won't have Internet access, but I'll post the 21-day stats when I get back (probably Sunday evening).
 
My points at Free-DC for WCG are much lower than my points at the WCG website. Is this normal? Is anyone else having this problem -- or is it just me?

😕
 
No, that is normal - Free-DC covers "BOINC"-cobblestones (which are numericly lower than ... ) WCG has their own way of givin´g credits, and that is based on their Non-Boinc client.
 
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