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Old 2009-07-06, 10:57   #1
panic
 
Jul 2009
Southport, UK

3 Posts
Default I think it's gonna be a long, long time

Hey guys,

It's my first time on the forum, and i'm glad to be part of GIMPS I've been going for about 2 weeks and I used to a few years back aswell.

I've very recently (about 5 minutes ago) got a Pentium III @ 500MHz doing LL (100) "first-time" tests, and although already having a vague knowledge of how incredibly long it takes to do them, I was shocked to be told that it would take 626 days!

I don't know whether it's worth the time and effort to let it carry on working, since it said that the exponent might be re-assigned after a year anyway. Any advice?

Cheers
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Old 2009-07-06, 12:18   #2
Uncwilly
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My advice is to change the work type for that machine to TF-LMH.

Trial Factoring assignments are much shorter in duration. And those in the higher ranges (commonly known as LMH) are even faster and more well suited to your machine.
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Old 2009-07-06, 12:33   #3
cheesehead
 
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Quote:
Originally Posted by panic View Post
I was shocked to be told that it would take 626 days!

I don't know whether it's worth the time and effort to let it carry on working, since it said that the exponent might be re-assigned after a year anyway. Any advice?
Be sure to send in regular progress reports. Exponents likely to be reassigned are those showing no recent progress.
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Old 2009-07-06, 13:14   #4
Uncwilly
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Quote:
Originally Posted by cheesehead View Post
Be sure to send in regular progress reports. Exponents likely to be reassigned are those showing no recent progress.
And perform a back-up of the directory about once a month.

Also, a double check would be faster, as it is a smaller number.
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Old 2009-07-06, 13:29   #5
panic
 
Jul 2009
Southport, UK

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Quote:
Originally Posted by Uncwilly View Post
My advice is to change the work type for that machine to TF-LMH.

Trial Factoring assignments are much shorter in duration. And those in the higher ranges (commonly known as LMH) are even faster and more well suited to your machine.
Ah yeah thanks, i'm not prepared to wait nearly 2 years for a result! A lot of Elton John to listen to if I let it carry on!

Cheers
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Old 2009-07-06, 15:27   #6
pegaso56
 
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Oct 2006
Rosario, Argentina

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Default old PIII

Hi. May be a good idea to change to Linux, use mprime instead of prime95 in order to optimize cpu resources, and if you have enough memory you could try doing p-1.
Regards, Carlos
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Old 2009-07-06, 20:31   #7
panic
 
Jul 2009
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Quote:
Originally Posted by pegaso56 View Post
Hi. May be a good idea to change to Linux, use mprime instead of prime95 in order to optimize cpu resources, and if you have enough memory you could try doing p-1.
Regards, Carlos
Coincidentally I already was using linux 32-bit mprime with nothing else running I've now assigned P-1 factoring.

Cheers
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Old 2009-07-07, 03:35   #8
jasong
 
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I forget how much power those P3s use, but purely from an electrical cost perspective you might do pretty well with the P3. There was someone a good while back who put a bunch of P3 stuff together, about a kilowatt of power draw, I think. That person did really well from a total cost perspective and it might still be true for P3s.

You can do whatever you want, I'm just killing time with this post. :)
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Old 2009-07-07, 16:50   #9
henryzz
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Quote:
Originally Posted by jasong View Post
I forget how much power those P3s use, but purely from an electrical cost perspective you might do pretty well with the P3. There was someone a good while back who put a bunch of P3 stuff together, about a kilowatt of power draw, I think. That person did really well from a total cost perspective and it might still be true for P3s.

You can do whatever you want, I'm just killing time with this post. :)
i would be surprised if a kilowatt-worth of p3s would outdo one cheap Q6600
plus a Q6600 would use maybe a quarter of the power and possibly cost less than getting a lot of p3 parts together
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Old 2009-09-11, 05:11   #10
Reed_Young
 
Sep 2009
New Mexico

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Default A kilowatt worth of P3's is very interesting

Quote:
Originally Posted by jasong View Post
I forget how much power those P3s use, but purely from an electrical cost perspective you might do pretty well with the P3. There was someone a good while back who put a bunch of P3 stuff together, about a kilowatt of power draw, I think. That person did really well from a total cost perspective and it might still be true for P3s.

You can do whatever you want, I'm just killing time with this post. :)
Combined with another suggestion I read earlier today, booting Linux without a hard drive using NFS and PXE, I can believe somebody got enough P3 processors to do more with a kilowatt than with one bleeding-edge standalone system that also requires one kilowatt. If you can find that story about the P3s I'd read it.

Reed Young
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