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Search: Posts Made By: Zhangrc
Forum: PrimeNet 2022-01-27, 15:16
Replies: 25
Views: 1,317
Posted By Zhangrc
(GPU72 recommend level + 4) or 2^80 (for smaller...

(GPU72 recommend level + 4) or 2^80 (for smaller exponents), whichever is higher?
(Apply for NF results only; F with new factors should be given credit, from starting bit level to the largest factor...
Forum: Data 2022-01-27, 04:48
Replies: 1,170
Views: 142,690
Posted By Zhangrc
13.2M done! Will work on 10.5M. :bounce:

13.2M done!
Will work on 10.5M. :bounce:
Forum: PrimeNet 2022-01-26, 15:20
Replies: 2,435
Views: 273,015
Posted By Zhangrc
Minus (Let us laugh for a while (and archive it at...

(Let us laugh for a while (and archive it at https://archive.org too) before fixing it?:bounce wave:
But still there is a way. It really makes sense giving no credit for any NF result above...
Forum: PrimeNet 2022-01-26, 15:11
Replies: 25
Views: 1,317
Posted By Zhangrc
TF from 2^80 to 2^1024 yields over 93%...

TF from 2^80 to 2^1024 yields over 93% probability of finding a factor.
If they weren't done by quantum computers...
We could have 100 more P-PRP results with this much computing power.
Forum: PrimeNet 2022-01-26, 12:32
Replies: 2,435
Views: 273,015
Posted By Zhangrc
https://www.mersenne.org/primenet/ Today's...

https://www.mersenne.org/primenet/
Today's actual TFLOP/sec:...
Forum: PrimeNet 2022-01-26, 02:46
Replies: 154
Views: 22,677
Posted By Zhangrc
I'm doing several of them (77 to 78). Maybe I...

I'm doing several of them (77 to 78).
Maybe I should unreserve them, but the lowest untested is 107.1M, so I still have time to go.
Forum: Software 2022-01-22, 01:40
Replies: 351
Views: 17,453
Posted By Zhangrc
Maybe 31.0 will be ready for those:cool:

Maybe 31.0 will be ready for those:cool:
Forum: Software 2022-01-21, 07:03
Replies: 351
Views: 17,453
Posted By Zhangrc
Maybe ... 30.8 is pre-beta, and 30.9 is beta?

Maybe ... 30.8 is pre-beta, and 30.9 is beta?
Forum: mersenne.ca 2022-01-21, 02:48
Replies: 806
Sticky: mersenne.ca
Views: 104,720
Posted By Zhangrc
Thank you, James! ...

Thank you, James!
https://www.mersenne.ca/exponent/13291111
Forum: Software 2022-01-21, 01:51
Replies: 351
Views: 17,453
Posted By Zhangrc
But on my machine, it does have performance...

But on my machine, it does have performance impact (because switching needs to go through extra computations, which is shown by the CPU usage of the "system" process)
Usually it switches once every...
Forum: mersenne.ca 2022-01-20, 07:05
Replies: 806
Sticky: mersenne.ca
Views: 104,720
Posted By Zhangrc
Suggestion: Show "MISSED FACTOR!" in P-1...

Suggestion:
Show "MISSED FACTOR!" in P-1 results too, as in https://www.mersenne.ca/exponent/1014197 (shown in TF).
Some are not really "MISSED FACTORs", because P-1 can be run on the cofactor. But...
Forum: Data 2022-01-19, 01:50
Replies: 3,512
Views: 324,470
Posted By Zhangrc
Maybe some of them are actually PRP but reserved...

Maybe some of them are actually PRP but reserved as P-1? Getting P-1 assignments is much easier because there's no assignment rules.
Forum: Data 2022-01-18, 08:21
Replies: 1,170
Views: 142,690
Posted By Zhangrc
Lowest undone by Prime95 is 108.3M (not 108.2M),...

Lowest undone by Prime95 is 108.3M (not 108.2M), and still 27 factors to go.
(again, feel free to delete it once corrected)
Forum: Software 2022-01-15, 05:11
Replies: 351
Views: 17,453
Posted By Zhangrc
See some of my previous posts for more...

See some of my previous posts for more information.
This CPU is AMD R7 4800H, which has 8 cores and 16 threads. Prime95 is set to run 1 worker at core 2,3,4,5 (not hyperthreaded). However, it seems...
Forum: Software 2022-01-15, 00:59
Replies: 351
Views: 17,453
Posted By Zhangrc
v30.8 stage 2 thread switching

Stage 2 switches between threads constantly during stage 2, unlike PRP or LL where no switching happens.
That might be why the "system" and "program manager" steal my CPU cycles.
Forum: Software 2022-01-14, 12:03
Replies: 351
Views: 17,453
Posted By Zhangrc
This happens occasionally. Sometimes it's there...

This happens occasionally. Sometimes it's there but sometimes it's not.
I think switching to Linux can address the problem, but it's difficult to run my mfaktc on Linux.
And for wine ... Prime95...
Forum: Homework Help 2022-01-12, 10:29
Replies: 1
Views: 499
Posted By Zhangrc
May I suggest math stack exchange? ...

May I suggest math stack exchange?
https://math.stackexchange.com/
Forum: Data 2022-01-11, 15:08
Replies: 1,170
Views: 142,690
Posted By Zhangrc
13.2M seems so smooth, today I factored 4...

13.2M seems so smooth, today I factored 4 exponents with 5 factors.
May I take another range, about 40 unfactored? Better be smaller.
@petrw1 you can recommend one:bow:
It seemed that you want to...
Forum: Lone Mersenne Hunters 2022-01-11, 03:07
Replies: 2,040
Views: 283,779
Posted By Zhangrc
M13215599 has a composite factor:...

M13215599 has a composite factor: 156983032676499216249507946592486467212604643431265282431 (186.679 bits) = 32454152674998424032372319 (84.747 bits) * 4837070751732600558995351425249 (101.932 bits).
Forum: Software 2022-01-10, 10:09
Replies: 178
Sticky: Prime95 30.7
Views: 19,042
Posted By Zhangrc
Yes, but millions of GHZ-days have already been...

Yes, but millions of GHZ-days have already been spent on that exponent with no factor found. the smallest factor might be at least 2^300.
Maybe no default number?
(Happy to see another Chinese user...
Forum: Software 2022-01-10, 05:49
Replies: 351
Views: 17,453
Posted By Zhangrc
"System" process stole my CPU cycles during the...

"System" process stole my CPU cycles during the beginning of stage 2.


[Jan 10 13:04] Switching to FMA3 FFT length 768K, Pass1=768, Pass2=1K, clm=1, 4 threads
[Jan 10 13:04] Setting affinity to...
Forum: Software 2022-01-09, 06:24
Replies: 351
Views: 17,453
Posted By Zhangrc
When allocating too much memory, stage 2 init...

When allocating too much memory, stage 2 init just crashes instead of showing "memory allocation error, try again using less memory".
when I restarted Prime95, it shows:

[Jan 9 14:24] Worker...
Forum: Software 2022-01-08, 01:40
Replies: 351
Views: 17,453
Posted By Zhangrc
B2 should be re-calculated too. I suggest using...

B2 should be re-calculated too. I suggest using the same method as Pminus1 uses.
This problem occurs in stage 1, indicating that older versions like 30.7 might face the same problem.
Forum: Software 2022-01-07, 07:41
Replies: 351
Views: 17,453
Posted By Zhangrc
There are more strange things [Jan 7 15:11]...

There are more strange things

[Jan 7 15:11] M13238273 stage 2 at B2=30080820 [15.96%]. Time: 42.249 sec.
[Jan 7 15:11] M13238273 stage 2 at B2=42747180 [22.69%]. Time: 40.301 sec.
......

...
Forum: Software 2022-01-07, 06:49
Replies: 351
Views: 17,453
Posted By Zhangrc
[Jan 7 14:36] Worker starting [Jan 7 14:36]...

[Jan 7 14:36] Worker starting
[Jan 7 14:36] Setting affinity to run worker on CPU core #2
[Jan 7 14:36] Optimal P-1 factoring of M13238273 using up to 12595MB of memory.
[Jan 7 14:36] Assuming no...
Showing results 1 to 25 of 208

 
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