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Old 2018-03-10, 21:03   #34
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Quote:
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I am planning to use pmfs, since it is a fairly small range. One of the things on my to do list is to download gfndsieve and pfgw and to see how well I can get them to scale on my system. gfndsieve is multi-threaded (thanks Mark!). Is pfgw muti-threaded?

Luigi, would it be possible to add a y/n column to the table in your downloads page to indicate if each program is multi-threaded or not?
pfgw is not multi-threaded, but llr is. The problem with small numbers like these is that the PRP test is so fast per candidate that splitting it across cores is not worth it. This is why gfndsieve has the -T option. When using that option it will split the output file into multiple output files with a certain number of n per file. In you case you have 8000 n. If you want to split the work across 8 cores (post sieving), use -T1000 and you get 8 files.
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Old 2018-03-11, 17:57   #35
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Yep.
Done

I reserve the last section: N=19001-19999 and k=50000-100000
Sieve completed yesterday.

I can't recall whether either AthGFN64, proth or geneFer are multithreaded or not, as no one seem to have used them for years.
I have to take a holiday's week for a medical check-up, I will test them when I am back after Feb. 19th. If you have clues post them here and I will eventually update the software table.

Last fiddled with by ET_ on 2018-03-11 at 18:02
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Old 2018-03-11, 19:04   #36
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Done

I reserve the last section: N=19001-19999 and k=50000-100000
Sieve completed yesterday.

I can't recall whether either AthGFN64, proth or geneFer are multithreaded or not, as no one seem to have used them for years.
I have to take a holiday's week for a medical check-up, I will test them when I am back after Feb. 19th. If you have clues post them here and I will eventually update the software table.
I know that proth is not. There is no reason to continue using it. I don't think that the others are either.
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Old 2018-03-12, 01:42   #37
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Taking 32001-32999 50000-100000. I estimate that it will about 4 days on a single core.
Done. One xGFN factor found.

68365*2^32258+1 is a Factor of xGF(32256,8,5)!!!!
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Old 2018-03-13, 11:06   #38
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Mark I have issues feeding a gfndsieve abcd file to pfgw...
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Old 2018-03-13, 12:55   #39
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Mark I have issues feeding a gfndsieve abcd file to pfgw...
Please explain. I have had zero issues.
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Old 2018-03-15, 14:07   #40
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I can take the combo range n = 22,000 - 29,999 for k = 50,000 - 100,000 for a "Factoring" check. Should take just a couple of days once my system frees up next week.

I completed this range. No new factors of classic Fermat numbers found.
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Old 2018-03-15, 15:31   #41
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I completed this range. No new factors of classic Fermat numbers found.
Did you use pmfs or gfndsieve + pfgw?
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Old 2018-03-15, 19:27   #42
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I have attached the latest code. The biggest thing is that this will use wget (which you need to install/download if you don't have it) to pull the current pages from the FermatSearch website. You need to pass an argument (any value will do) to flist to get it to pull the latest instead of using the files in the attached zip file.

The list of gaps now provides a status update if the gap reserved. All gaps are reserved (yay), although Luigi will check Fabrice's status on those old ranges.
Attached Files
File Type: 7z flist.7z (85.4 KB, 42 views)
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Old 2018-03-15, 23:48   #43
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Did you use pmfs or gfndsieve + pfgw?
I used pmfs.
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Old 2018-03-18, 19:07   #44
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Please explain. I have had zero issues.
I was probably in a hurry and did something wrong. The system is working ok right now, sorry for the mess.
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