Help needed to factor Bernoulli(200)!
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Help needed to factor Bernoulli(200)!
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Send message Joined: 26 Jun 08 Posts: 645 Credit: 474,979,488 RAC: 208,175        |
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! |
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Send message Joined: 16 Oct 09 Posts: 46 Credit: 833,166 RAC: 0      
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How much ram dose each task roughly require? |
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Send message Joined: 16 Apr 12 Posts: 6 Credit: 143,957 RAC: 0  
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will these tasks come through in the normal way or do we need to do something different ? |
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Send message Joined: 26 Jun 08 Posts: 645 Credit: 474,979,488 RAC: 208,175 |
lasievee tasks require about 500 MB each. lasievef and lasieve5f tasks require about 1GB each. Yes, just get and submit work the usual way. |
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Send message Joined: 16 Oct 09 Posts: 46 Credit: 833,166 RAC: 0
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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 B200B200 had special memory requirements. |
 Mankka*Send message Joined: 6 Aug 10 Posts: 2 Credit: 3,041,467 RAC: 0   
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I hope that our team have been able to help you out a bit, but the credits stills sucks for VERY demanding wu's ;) |
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Mankka* Send message Joined: 6 Aug 10 Posts: 2 Credit: 3,041,467 RAC: 0
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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. |
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Gigacruncher [TSBTs Pirate] Send message Joined: 26 Sep 09 Posts: 218 Credit: 22,841,893 RAC: 1    |
So what's the progress on B200? |
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Gigacruncher [TSBTs Pirate] Send message Joined: 26 Sep 09 Posts: 218 Credit: 22,841,893 RAC: 1 |
Learn how to check NFS@Home daily stats and interpret my comment. |
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Send message Joined: 16 Apr 12 Posts: 6 Credit: 143,957 RAC: 0
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My system has plenty of memory so I don't mind doing these all the time if that is possible. |
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Gigacruncher [TSBTs Pirate] Send message Joined: 26 Sep 09 Posts: 218 Credit: 22,841,893 RAC: 1 |
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. |
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Send message Joined: 26 Jun 08 Posts: 645 Credit: 474,979,488 RAC: 208,175 |
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. |
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Send message Joined: 16 Apr 12 Posts: 6 Credit: 143,957 RAC: 0
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Many thanks will give that a try.......... |
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Send message Joined: 16 Apr 12 Posts: 6 Credit: 143,957 RAC: 0
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Is this project complete now ? |
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Send message Joined: 26 Jun 08 Posts: 645 Credit: 474,979,488 RAC: 208,175 |
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. |
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Send message Joined: 16 Apr 12 Posts: 6 Credit: 143,957 RAC: 0
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Will this mean more Work Units for us to process ? |
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Gigacruncher [TSBTs Pirate] Send message Joined: 26 Sep 09 Posts: 218 Credit: 22,841,893 RAC: 1 |
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. |
