NomNomNomNom...

Insane amount of pc power there Mr Biffa, i'm allready tidying up my cell for when you come a calling....am fresh out of major funds to compete with that array, your going to have a ball building that lot sah! :D
 
I still can't get over 140-160K PPD for under 600W, that is amazing, and frustrating that I'm pulling more that that and only getting 40-50K!
 
I see what you mean on efficiency, my rig pulls 270w at the wall and will produce a maximum of 13k ppd so that makes an SR-2 around 700% more efficient
 
*sends a prayer up to the lottery gods*

Give me a million quid and trust me, I am kitting out an entire room with air-con and super foldy rigs! :D

As for the GPUs getting in the way of Bigadv, have you tried forcing CPU affinity to specific cores? You should be able to do it through Task Manager if the client doesn't offer an option. Should be less interference if the GPU3 clients can't physically encroach on the remaining cores.
 
I'm pulling under 150w for 15k at the minute - loving the 912pts units
Not sure the efficiency stacks up when you inc. cost - but thoses bonus points make a massive differance.
Anyone know how long they will be around for?
 
SiriusB said:
*sends a prayer up to the lottery gods*

Give me a million quid and trust me, I am kitting out an entire room with air-con and super foldy rigs! :D

As for the GPUs getting in the way of Bigadv, have you tried forcing CPU affinity to specific cores? You should be able to do it through Task Manager if the client doesn't offer an option. Should be less interference if the GPU3 clients can't physically encroach on the remaining cores.
Click to expand...

I already do that on weebeastie. But for 4 GPU's I'm assigning 1 real core and one HT core on the i7 970 which drops its performance down to a i7 920 level.

So around 35-38K PPD for the i7 970 on bigadv and 13.5-14K per GPU = around 90K PPD, theoretically I might get 120K PPD with it like that, but I'd rather get 160K PPD

ToxicTBag said:
Insane amount of pc power there Mr Biffa, i'm allready tidying up my cell for when you come a calling....am fresh out of major funds to compete with that array, your going to have a ball building that lot sah! :D
Click to expand...

Heh, not with what I know you are planning on buying.. are they £399 or £450+?

shadowscotland said:
I'm pulling under 150w for 15k at the minute - loving the 912pts units
Not sure the efficiency stacks up when you inc. cost - but thoses bonus points make a massive differance.
Anyone know how long they will be around for?
Click to expand...

To show you how much multi-gpu/cpu folding affects the performance I get 14K on 912 and 925 pointers on the GTX470's on weebeastie.

Not sure on the bonus points but A3 SMP WU's get them and bigadv get them so I think there will always be some :)

I might not get that, it depends on WU but I'm sure as hell gonna give it a try :D
 
Last edited:
Is that a oc'ed 470 - Ouch!
I was getting 13k but realised FahCore_15 was running in the sandbox - Doh!
Getting over 15.5K (51sec a step) now on my 460 (850/1700) - cpu is idle or CADing

The 460 uses 50w more at load that my passive 8500gt did at idle!

50w for 15k is about the best I can acheive, as the pc is on all day for 'her' facebook and email duties :D
 
Last edited:
I've got a 460 in my home machine, OC'ed to 900 core (from 675), and currently the i7 920 is running a 2685 bigadv.

GTX460 - 15,670 PPD @ 51s/frame

Compare to weebeastie, where there are 4 GTX470's overclocked to 700 Core (originally 608) but the CPU is a 970 running a non bigadv A3

GTX470 - 13,800 - 14,000 PPD @ 47-48s/frame

Yes it all adds up to impressive performance, but I needed a hex core i7 to get the 4 GTX470's to work anywhere near their proper performance envelope.
 
Its a combination of things, this might be part of it from one of the Pande Group, its about the 480 but applies to the 470 and 465 as well.

ihaque said:
I haven't actually done any analysis into this question, so I can't say for sure, but it's important to know that there's a lot more different between the GTX 480 and GTX 460 than just 480 vs 336 shaders.

The internal organization of the GTX 480 (GF100) is actually as 15 cores, each containing 2 16-wide computational units ("CUDA cores" are a marketing name - they are not real cores, as they don't compute independently). The GTX 460 (GF104) has 7 cores, each with 3 16-wide units (48 CUDA cores). GF104 also has twice the number of special-function units (to evaluate exponentials, trigonometric functions, etc.). Perhaps the most relevant change, though, is that GF104 is able to use more of its execution hardware at the same time (e.g., both the shaders and special function units), because it is superscalar - it can run more than one instruction at the same time from each thread (http://www.anandtech.com/show/3809/nvidias-geforce-gtx-460-the-200-king/2).

My suspicion (and again, I haven't done the testing to test these guesses) is that there are a few things behind GTX 460 being more efficient than expected:
  • Fewer SMs may make it easier to load-balance the GPU
  • More special function hardware may increase throughput in a few parts of the code
  • Superscalar execution provides an efficiency boost in per-shader terms.
Click to expand...

So yes I think the 460 may be more efficient at folding than the 470, certainly the increased core speed would help a lot with some WU's

But I also think its down to the inefficiencies of the GPU3 applications e.g. Core_15, they need a lot of the attention of the rest of the system, esp CPU interrupts, so when you have 3 or 4 cards in there they could actually be fighting against each other a bit :eek:

When I was building weebeastie I had a funny experience of if I increased the overclock on the cards some of them would just throttle back. I managed to find a good balance of voltage and overclock so that weebeastie has been stable wiith reliable output, but without a bluescreen or GPU crash or anomalie for a few weeks now. Thats the main thing, that I know I can get a reliable 90K out of it day in day out without it overheating or crashing. (it does do other things)
 
Have watched, listened and read a lot since i joined the team.

But given that i have whinged a lot about electric which is not as bad as i thought - think it was just my way of letting off steam i think its a good time to sit back for a day or two to take stock.

Number 1 for me will allways be seti and while i have been doing a bit of other stuff to keep the ambient temps at an acceptable level have allways hankered to get into folding but.....You all may find this hard to believe but while i am far from stoopid i am guilty from time to time of not being able to see passed the end of my own nose - i'm no cyrano de bergerac its more of a mental block.

I have enjoyed the learning curve more than anything and its that very thing that puts me off folding it looks a darn site more of a challenge than seti, yes sure i can install and run the cpu or gpu app but then there's this big adv and dedicated cores, multiple instances etc etc etc.
Now i know you have allways been quick to offer help Mr Biffa but i would like something more like a few hours when yourself or anyone that may have the time could talk me through from step 1 etc.

On the new gtx580 front sure i was poised with my finger on the button at 2pm then common sense kicked in, within 2-3 minutes i had found every one of them £15-£20 cheaper. So given that i'm usually impulsive with my purchases i was pleased with the self control at least.

Anyways i digress. am going to switch off all 3 rigs untill the weekend. Will use the spare time to think and plan, try to work out what is and is not cost effective and what will give me the best output.
I would very much appreciate the help in setting up folding once and for all to master this multiple instances and venture into big adv, if it turns whats left of my brain into spaghetti hoops then i accept the challenge.

There are those who would disagree but it's science first for me then comes the learning and then and only then maybe a bit of competition and friendly stomping.

Its gone very quiet with no machines crunching. :eek:
 
Damn blast and blitherations!!.. one supplier sends the wrong fans.. (120 instead of 140) the next sends the wrong cpu blocks (AMD instead of Intel fitting). How hard can it be!?
 
That's a royal pain. There's nothing worse than thinking you're ready to get building and realising you can't.
Idiots.
 
Sorry to hear the bad news Biffa, gives you time to put up some pics ;). Couldn't post in here any earlier because I got a 48 hour ban for dropping the price of an item I was selling after 23 hours and 43 minutes instead of waiting the required 24 hours :rolleyes:
 
Ooh thats happened to me :( you naught bumper you :D

I'll do some piccies tonight, I was doing accounts all night last night. Mind you I might be cream crackered tonight so I won't promise anything, can't even catch up on the weebeastie build log. (Think I have need to go and retake some pics of the final setup)

Anyhoo.. hopefully they will have the 1366 ones in stock. Supposed to be the dogs danglies as far as blocks go. :D
 
You must log in or register to reply here.
Back
Top Bottom