Forum: Software
2020-12-19, 01:44
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Replies: 46
Views: 8,870
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Forum: Software
2020-12-19, 00:02
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Replies: 46
Views: 8,870
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Forum: Software
2020-12-18, 23:59
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Replies: 46
Views: 8,870
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Forum: Software
2020-12-18, 15:47
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Replies: 46
Views: 8,870
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Forum: Software
2020-12-18, 02:48
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Replies: 46
Views: 8,870
Ok testing here at the Xeons i notice with LLR...
Ok testing here at the Xeons i notice with LLR that if an exponent has a problem that it probably is doing something else then slowing it down. Now that's ok if 1 exponent has a problem that for this...
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Forum: Lounge
2020-12-10, 00:40
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Replies: 1,039
Views: 62,769
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Forum: Riesel Prime Search
2020-12-04, 19:17
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Replies: 68
Views: 18,647
Congrats on that one!
Way further away than...
Congrats on that one!
Way further away than i had guessed!!
It had so many primes below 3.14M.
If we do math from there then it's 6.8M which is factor 2 and 11+M is really far away again....
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Forum: Riesel Prime Search
2020-11-30, 20:45
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Replies: 399
Views: 55,048
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Forum: Lounge
2020-11-30, 19:42
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Replies: 1,039
Views: 62,769
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Forum: Lounge
2020-11-30, 18:15
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Replies: 1,039
Views: 62,769
Money well spent. It's possible some years ago...
Money well spent. It's possible some years ago they suddenly saw so called 'debris' or junk in space actively move - hidden military satellites - designed to sabotage other satellites. With this you...
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Forum: Riesel Prime Search
2020-11-27, 10:02
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Replies: 399
Views: 55,048
Kar, c'est bon!
You can be sure i will...
Kar, c'est bon!
You can be sure i will report it if there is a new one above n=1569 :)
Please note for the few who might not know: testspeed of LLR with larger k's is a lot slower than small...
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Forum: Riesel Prime Search
2020-11-27, 02:25
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Replies: 399
Views: 55,048
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Forum: Riesel Prime Search
2020-11-27, 01:33
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Replies: 399
Views: 55,048
Given: k * 2^n - 1
The risk you run with...
Given: k * 2^n - 1
The risk you run with low-weights is that you do not find a prime at all,
because when the number of bits of the exponent n increases, the testing time goes exponentially up...
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Forum: Software
2020-11-24, 01:19
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Replies: 46
Views: 8,870
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Forum: Software
2020-11-24, 01:14
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Replies: 46
Views: 8,870
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Forum: Software
2020-11-23, 15:29
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Replies: 46
Views: 8,870
Good Morning!
On a NUMA system i notice a...
Good Morning!
On a NUMA system i notice a huge performance issue with LLR.
let's first explain the simple problem.
Probably we all know what numa systems are. memory at other sockets (or...
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Forum: Riesel Prime Search
2020-11-21, 19:40
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Replies: 93
Views: 27,275
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Forum: Probability & Probabilistic Number Theory
2020-11-21, 17:14
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Replies: 0
Views: 1,470
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Forum: Riesel Prime Search
2020-11-21, 15:08
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Replies: 68
Views: 18,647
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Forum: Riesel Prime Search
2020-11-21, 15:02
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Replies: 1,001
Views: 116,505
Too bad you didn't find anything k=89 * 2^n - 1...
Too bad you didn't find anything k=89 * 2^n - 1 until 4M.
Taking over k=89 then. will search it then from 4M to 6M (or maybe 7M) and then release it again probably will let you know when i release...
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Forum: Software
2020-11-05, 23:35
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Replies: 46
Views: 8,870
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Forum: Software
2020-10-12, 15:32
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Replies: 46
Views: 8,870
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Forum: Programming
2020-07-22, 15:22
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Replies: 14
Views: 4,687
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Forum: Programming
2020-07-22, 06:30
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Replies: 14
Views: 4,687
64x64 integer multiplication GCC
Good Morning!
Looking for way of multiplying fast in GCC 64x 64 bits unsigned 64 bits integers and obtaining both highres as well as lowres result.
Was busy reviving CUDA sieving code i wrote...
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Forum: Wagstaff PRP Search
2020-07-13, 21:01
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Replies: 190
Views: 42,205
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