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WilhelmGGW
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Super Crunch

Sought: Retail computer that will crunch LOTS of work units cost effectively. Any ideas about that?

I'm needing to buy a new computer and I'd like it to be one that will do great things for this project. But I need it to be reasonably priced and energy efficient as well.

So far, the best I've seen is Dell's Linux unit. Anything better out there that you know of? Thanks in advance.
[Jun 24, 2008 1:20:41 PM]   Link   Report threatening or abusive post: please login first  Go to top 
JmBoullier
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Re: Super Crunch

If it has a Quad 6600 inside you should be happy. But beware of the CPU scalable feature which is set by default to reduce the speed of the CPU when idle in some (all?) Linux installations, even for desktops.
Since Boinc is running at the lowest priority it does not force the CPU to run full speed if it is the only active task in the PC. You have to set this feature to the performance mode for getting Boinc to give its best.

Otherwise you might experience various disappointments:
- less returned WUs than you would expect if you leave your machine running "idle" during long periods
- overclaiming credits for those "slow WUs" if the benchmark has run full speed while you were using your PC
- underclaiming credits for WUs that have been processed "full speed" while you used your PC, if the benchmark had been run during an idle period.

I don't know how many Linux users are aware of this feature and of its effects on Boinc.

That being said if you really want to save some energy when you don't use your machine you may leave it as it is and you will still be crunching 4 WUs at once. smile

Cheers. Jean.
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[Jun 24, 2008 3:11:08 PM]   Link   Report threatening or abusive post: please login first  Go to top 
WilhelmGGW
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Re: Super Crunch

What about some " mini supercomputer" sort of box? One that might have multiple processor chips in the same box?

It seems such a waste to have only four processes running at the same time -- on a quad chip -- when the software is apparently designed for up to 16!

Does someone build a box with multiple quads, so you can do much more work without having to buy all the superfluous, redundant components -- like hard drive, motherboard, case, etc?
[Jun 24, 2008 4:05:02 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Super Crunch

Up to 16? The software will scale up to as many processors as you have (assuming you have enough memory). The statistics show computers with 96 processors.

If you have money to burn, look into blade computing. You can build your own supercomputer!
[Jun 24, 2008 4:14:02 PM]   Link   Report threatening or abusive post: please login first  Go to top 
ultimaThule
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Re: Super Crunch

What about some " mini supercomputer" sort of box? One that might have multiple processor chips in the same box?

It seems such a waste to have only four processes running at the same time -- on a quad chip -- when the software is apparently designed for up to 16!

Does someone build a box with multiple quads, so you can do much more work without having to buy all the superfluous, redundant components -- like hard drive, motherboard, case, etc?

Some stuff.....



Pentium 4 (about 3GHz, not sure):

0:000:13:25:48 686 1
0:000:13:10:44 739 1
0:001:15:28:44 2,173 3
0:001:06:14:26 1,730 3
0:001:01:42:16 1,558 3
0:002:13:19:08 3,596 5
0:000:14:38:03 935 1
0:000:19:06:21 1,253 2
0:003:16:50:50 5,133 9
0:000:09:07:19 486 1


Pentium 4 (3GHz with HT)

0:000:20:19:44 954 2
0:001:13:08:34 1,852 3
0:001:07:33:28 1,526 2
0:000:14:26:22 723 1
0:002:09:39:28 2,873 3
0:001:04:53:01 1,306 2
0:002:12:21:19 2,950 4
0:000:09:58:55 430 1
0:002:12:42:26 2,722 4
0:001:08:28:26 1,396 2


Xeon (2,2 GHz with HT)

0:001:18:32:24 1,628 2
0:001:06:53:28 1,364 2
0:002:00:26:05 1,566 3
0:000:17:33:42 597 1
0:001:19:46:12 1,439 3
0:003:21:53:39 3,739 5
0:004:02:51:27 3,573 5
0:001:15:05:21 1,250 2
0:004:02:05:11 2,980 4
0:000:15:01:48 564 1


Xeon (3,2 GHz with HT)

0:001:10:46:56 2,161 3
0:002:17:06:30 3,741 5
0:001:04:53:42 1,664 3
0:002:05:01:14 2,461 3
0:002:18:03:11 4,001 6
0:000:23:09:36 1,248 2
0:002:21:25:35 3,725 5
0:001:00:02:20 1,286 2
0:001:05:41:52 1,777 3


Two Xeon (2,8 GHz with HT)

0:002:22:09:49 3,344 4
0:004:00:10:04 4,467 7
0:004:06:40:55 4,765 7
0:001:04:31:48 1,270 2
0:004:03:47:04 4,527 6
0:006:20:54:56 8,025 12
0:003:17:41:26 3,938 5
0:002:18:29:35 3,238 5
0:002:20:29:43 2,973 5
0:001:08:45:42 1,807 3


Eight Xeon on two socket (1,8 GHz)

0:007:10:22:33 15,716 24
0:005:05:20:33 10,809 18
0:003:04:04:44 6,505 12


Some polka 8)
http://www.youtube.com/watch?v=xbWnlvV65kw


Accumulated Points: 8,279,508
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[Edit 2 times, last edit by ultimaThule at Jun 24, 2008 7:09:45 PM]
[Jun 24, 2008 6:34:12 PM]   Link   Report threatening or abusive post: please login first  Go to top 
ultimaThule
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Re: Super Crunch

Some more stuff....

Gosh how drunk I was yesterday, it can be recognize from that I start to listen polka, I do not know why it happens biggrin


So, here is couple of images from computer that was running with one processor (2,2 Xeon) and then I added another, so it is running with two 2,2 Xeon right now..

Average:
http://i30.tinypic.com/fyki7o.jpg

Total:
http://i31.tinypic.com/hwhau1.jpg



Accumulated Points: 8,307,286
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[Edit 1 times, last edit by ultimaThule at Jun 25, 2008 6:51:34 AM]
[Jun 25, 2008 6:43:59 AM]   Link   Report threatening or abusive post: please login first  Go to top 
WilhelmGGW
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Re: Super Crunch

JmBoullier, thanks for the important tip about how to set up a new Linux machine to get the most out of running this project.

Can you tell me? Is there a thread on the boards here -- or information somewhere else -- with specific, detailed instructions on how to do what you mentioned, and other tips for crunching with Linux if there are any? I have looked, but not found anything.

Thanks for your help, one and all. I ordered the Dell Ubuntu machine last night.
[Jun 26, 2008 11:33:02 AM]   Link   Report threatening or abusive post: please login first  Go to top 
WilhelmGGW
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Re: Super Crunch

My search has ended. I purchased the Ubuntu machine from Dell and have been VERY PLEASED!

With both sides of the dual core Pentium crunching away at full throttle, it cranks out a ton of work!

And I got the system delivered! [including shipping and taxes] for only $307.05!

A great and cost-effective way to add to my production here! And it also gives me a first real chance to have hands-on experience with a non-Windows operating system. So far, I'm thoroughly enjoying the experience!
[Jul 4, 2008 2:36:51 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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