Help needed to factor Bernoulli(200)!

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Greg
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Message 856 - Posted: 8 May 2012, 5:08:50 UTC

Barry Mazur and William Stein wish to include the factors of the numerator of the 200th Bernoulli number in their upcoming book, and you can help! This is a large GNFS factorization, but NFS@Home has the ability to sieve it in 2-3 months. Therefore, I am placing 2,1019- on hold for a bit. If you have the memory for it please use the lasievef application help factor B200, and let's complete it as quickly as possible!

Speedy51
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Message 859 - Posted: 12 May 2012, 10:42:07 UTC

How much ram dose each task roughly require?

Caesar
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Message 860 - Posted: 12 May 2012, 15:32:22 UTC - in response to Message 859.

will these tasks come through in the normal way or do we need to do something different ?

Greg
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Message 861 - Posted: 12 May 2012, 22:50:11 UTC - in response to Message 859.

lasievee tasks require about 500 MB each. lasievef and lasieve5f tasks require about 1GB each.

Yes, just get and submit work the usual way.

Speedy51
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Message 865 - Posted: 15 May 2012, 8:08:57 UTC - in response to Message 861.

lasievee tasks require about 500 MB each. lasievef and lasieve5f tasks require about 1GB each.

Thankyou for the clarification
I thought by the following
If you have the memory for it please use the lasievef application help factor B200
B200 had special memory requirements.

Profile Mankka*
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Message 866 - Posted: 17 May 2012, 7:13:48 UTC

I hope that our team have been able to help you out a bit, but the credits stills sucks for VERY demanding wu's ;)

Profile Mankka*
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Message 868 - Posted: 17 May 2012, 11:35:09 UTC
Last modified: 17 May 2012, 11:35:59 UTC

Actually not Bob, then I wouldn't crunch these ones, I'm doing this for the interest in the project & to help out =).
...sorry a bit off the topic.

Profile Carlos Pinho [TSBTs Pirate]
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Message 869 - Posted: 23 May 2012, 15:59:55 UTC

So what's the progress on B200?

Profile Carlos Pinho [TSBTs Pirate]
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Message 871 - Posted: 24 May 2012, 16:35:34 UTC - in response to Message 870.

Learn how to check NFS@Home daily stats and interpret my comment.

Caesar
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Message 874 - Posted: 26 May 2012, 8:54:37 UTC - in response to Message 873.

My system has plenty of memory so I don't mind doing these all the time if that is possible.

Profile Carlos Pinho [TSBTs Pirate]
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Message 875 - Posted: 26 May 2012, 9:54:25 UTC - in response to Message 874.

My system has plenty of memory so I don't mind doing these all the time if that is possible.


You need at least 5 GB.

Greg
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Message 876 - Posted: 27 May 2012, 1:05:45 UTC - in response to Message 874.

If you have sufficient memory, then you can to into NFS@Home preferences on the website, click on Edit NFS@Home preferences, and disable the lasievee application. This will mean that you will only receive the large-memory workunits that are worth more credit.

Caesar
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Message 878 - Posted: 27 May 2012, 15:02:39 UTC - in response to Message 876.

Many thanks will give that a try..........

Caesar
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Message 918 - Posted: 27 Jun 2012, 12:59:33 UTC - in response to Message 878.

Is this project complete now ?

Greg
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Message 920 - Posted: 28 Jun 2012, 6:11:41 UTC

The sieving is done, so NFS@Home is done with the number. But the linear algebra must now be performed to complete the factorization. That will likely take 2 months or longer.

Caesar
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Message 923 - Posted: 28 Jun 2012, 10:57:46 UTC

Will this mean more Work Units for us to process ?

Profile Carlos Pinho [TSBTs Pirate]
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Message 924 - Posted: 28 Jun 2012, 14:22:07 UTC - in response to Message 923.

Will this mean more Work Units for us to process ?


Only if filtering phase fails.

Greg, pay attention to spammers in the forum. In this thread you have two: yoluck and harley depp.

Message boards : News : Help needed to factor Bernoulli(200)!


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