Optimised apps

[kashi]

Interesting that there is now an optimised SSE4.2 app. Core i7 owners may be pleased that Cluster Physik/Gipsel is thinking of them.

Now that the 108 cr/hr limit has been removed I wish he would release a 32-bit Windows or preferably a Linux GPU app. My quad may have melted but my HD3850 could still shine.

[Rocoll]

Interesting that there is now an optimised SSE4.2 app. Core i7 owners may be pleased that Cluster Physik/Gipsel is thinking of them.

I tried the SSE4.2 app on my i7 with no perceivable change to the completion times over the SSE4.1
It's the first time I've seen a SSE4.2 optimised app so they may still be getting used to using it.

[kashi]

I was wondering how much difference there would be.
It seems it sometimes varies according to operating systems/compilers used and perhaps even the skill of the optimiser. I remember with the original Linux 64 optimised apps by petros the SSE4.1 was a fair bit slower than the SSE3, but for the optimised Windows apps by Cluster Physik/Gipsel the SSE4.1 was the faster one.

Still it is good to have the extra instructions available, even if they are not used much yet. The potential is still there for the future.

[fubared]

ATI  38xx/48xx owners:

get in while its hot! I can do 4 WUs in 45s a2 12cr a piece on a lowly 3850/256. Yep 1cr/s

[Tixx]

Noice!!

wish i had some ati cards at the mo'!
ive always been nvidia unfortunatly heh

on the same note, seti gpu cruchin pays crap! hahaha

[Furlozza]

Tixx.... check it out and you'll see it because the lowest cr is given, that is usually your wingman's score and he used a non-modified app

:hbang:

However..... the Astropulse with mod app is a very nice payer, if and when you get jobs that is.

[Tixx]

actually yeah ive seen them pop up every now and then.
indeed they pay well, but they dont crunch on gpu, and take upto 30hrs to crunch away heh

[Furlozza]

That's without the modified app.


1137286634    4059139    28 Jan 2009 10:17:47 UTC    31 Jan 2009 8:48:08 UTC    Over    Success    Done    211,263.90    779.86    772.71
1148803370    4719913    4 Feb 2009 1:28:38 UTC    4 Feb 2009 6:03:42 UTC    Over    Client error    Aborted by user     0.00     0.00    ---
1149258051    3761023    4 Feb 2009 6:03:47 UTC    16 Feb 2009 7:34:39 UTC    Over    Success    Done    416,873.70    772.71    772.71
1165165762    4568089    16 Feb 2009 7:34:50 UTC    17 Feb 2009 10:32:58 UTC    Over    Success    Done    35,762.88            769.79    772.71

Guess which one is mine and which one was done with a normal app on an AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ [x86 Family 15 Model 75 Stepping 2] or Intel(R) Core(TM)2 Extreme CPU Q6800 @ 2.93GHz [x86 Family 6 Model 15 Stepping 11] OR mine *grin* Intel(R) Core(TM)2 Duo CPU E6850 @ 3.00GHz [x86 Family 6 Model 15 Stepping 11]

[Tixx]

Sorry guys, but in order to have some semblance of cross project parity in this (at the request of other projects), we had to reduce credit again. New WUs should now be generating around 6.1 credit for stripes 79, 82 and 86, and around 9.2 credit for stripes 20 and 21. Other projects have been getting requests from their users to increase credit to match ours from their users, because they felt they couldn't compete -- and this is exactly the situation we'd like to avoid. 

looks like my credit will be spiraling down from 108c/h to probably around 70~

need to get my hands on some ati's :)

[yoda]

At the previous rate of around 12 per WU it was already getting "uneconomical" to run Milkyway on my 64bit Linux quads.  At 6.1 it's not looking good when compared to other projects with 64bit apps (like ABC, Cosmology and PrimeGrid). 

Still good value on the 32bit Windows boxes though!

[Wang Solutions]

More credit changes
February 18, 2009
I think the drop to 6/9 credits was a bit much (for now), so I've upped the credits to 8/12 credits for stripes 79/82/86/20/21. I'm really gonna let this sit for awhile (promise) and see how things pan out, unless something drastic happens.

[Furlozza]

Looks like installing the SSE4.1 app on iGnatious may be a good move.... at least to see if the credits/hr rise and maybe a windows one back onto TheGnat...... hhhhhhhmmmmm what one was it????

[Furlozza]

Well, installing modified app for V0.19 for XP (SSE3) (32 bit) has resulted in a rather steady cr rate of 8.33 per job, which has taken from 5 to 7.5 mins........ giving a return of between 66.64 to 99.96 given that the other core is working on either CPDN or WCG.

Am waiting to see what happens with the new app in iGnatious as am running down the old 'uns, which are paying *shudder* 6.14 crs for about 15-17 mins work (admittedly at 85% power due to...... ) So, will be interesting when I install the appropriate app (SSE 4.1 I think). They should be done by the time I wake up (and ABC would hopefully have rewarded me with another 1000 cr WU *grin* Hey... one can hope can't one??)

EDIT: Of course... then I gets a Seti AP that will pay 750 crs for 12-13 hrs work ..... maybe even less or 60 crs min per hr 

[Cruncher Pete]

From Mylkyway News Archive:

The server won't be awarding credits to applications with a version number less than 0.16. If you're not receiving credit for your optimized application then you probably need to update it to a more recent version. There are links to valid optimized applications in our code discussion and number crunching forums. If any valid applications are having problems with this, please let me know.

[Wang Solutions]

Am waiting to see what happens with the new app in iGnatious as am running down the old 'uns,

No need to run these down. The new app will process both the new and the old WUs fine (back to version 0.16) so you just need to stop BOINC, install the new app and XML file, restart BOINC and hey presto the WUs will resume from their checkpoint and continue, but just a lot faster. biggrin