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F@H and Raid Array "?"

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Old June 3rd, 2007, 09:57 PM
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Question F@H and Raid Array "?"
File/Web Server
Specs:

Seasonic 330 watts
ASUS P3B-F
Celeron 1.1ghz OC'd 1.4ghz F@H Stable
512MBs of PC133 Sdram
Nvidia Vanta AGP
One 10GB Fujitsu hard-drive *O/S Drive*
HighPoint RocketRAID 1740
Four Seagate Barracuda ST3500630AS 500GB in Raid 5
One NIC card
Standard 24x Cd-rom *<--- LOL>

Loaded with CentOS 4.4

ROCKETRAID 1740 SPECS

I got some new toys to play with.

a Rocket raid 1740 and four seagate 500GB

About three weeks ago, I did a OS reload going from windows to linux. The last 2 and half weeks I've been breaking in my 2 TB File/Web server.

Now I want this machine back in action folding 2 cure.

But I'm hesitant of doing it because I don't think the raid card comes with a hardware XOR. It taxes the processor 25% average and spikes to 40% once in awhile when its writing to disks.

Is it safe to try to fold on the machine.

I would hate for it to drop the array with 168GBs data.
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Old June 4th, 2007, 04:57 AM
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Yeah you could fold, of course you could... But I doubt it'd get much done. My Tualatin Celery at 1.6GHz and virtually no load ever averages ~55ppd usually, so depending on use you could be seeing as low as 35ppd.

Up to you though...
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Old June 4th, 2007, 04:25 PM
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I don't think you understand what I am asking.
I know I can fold on it. It takes about an average 3 days to complete a standard WU. It was even folding before I did an OS reload.

All I am asking will the raid card drop the array because it couldn't interrupt the processor for parity generation?

I know it shouldn't but there have been reports that said this card will drop an array when the system is at full load.

I really don't care about the ppd I just want more machines to fold 2 cure!

Also when it idles it averages 2-5% probably because of the X window systems.


Still Should I try?
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Old June 4th, 2007, 05:14 PM
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Oh, I see. That's a lot harder to answer...

Well, there is the option in the console client config that lets you specify how much CPU time it should use - you could always set it just to use 95% as a maximum or something.

But, basically, I don't think there's any way that question can be answered for sure. F@H is CPU bound, not I/O bound so that should help the card get interrupts, and it is run at lowest priority... But I think the only way is to try it and see.

How much stuff is on those massive drives? Is it possible to still back it all up?
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