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Search: Posts Made By: Zhangrc
Forum: Software 2022-06-30, 11:45
Replies: 8
Views: 312
Posted By Zhangrc
I've seen SUMOUT errors occur when running ECM on...

I've seen SUMOUT errors occur when running ECM on very small exponents and cofactors. (M1277 for example)
I'm not trying to reproduce the error (I have more PRPs to do), and it seems that these...
Forum: GpuOwl 2022-06-24, 14:45
Replies: 2,772
Views: 381,733
Posted By Zhangrc
Why does GPUowl do some iterations beyond the exponent?

20220624 14:38:50 Tesla T4-0 113032481 113030000 81f68225_______ 6390
20220624 14:39:06 Tesla T4-0 113032481 CC 113032481 / 113032481, 6ccf666_________
20220624 14:39:11 Tesla T4-0 113032481 OK...
Forum: Cloud Computing 2022-06-15, 02:34
Replies: 1,224
Views: 158,258
Posted By Zhangrc
There might be ways around this. Run ./mprime...

There might be ways around this.
Run ./mprime -m, wait a little more than 5 minutes, then start the worker.
Forum: Cloud Computing 2022-06-14, 14:36
Replies: 1,224
Views: 158,258
Posted By Zhangrc
I guess it has something to do with mprime...

I guess it has something to do with mprime itself.
Running GPUowl on GPUs does not result in the same problem.
Just running Python scripts does not result in stopping either.

import time
...
Forum: Cloud Computing 2022-06-14, 05:37
Replies: 1,224
Views: 158,258
Posted By Zhangrc
It's true. I've seen it stopping dozens of times,...

It's true. I've seen it stopping dozens of times, and I only use 2 separate accounts on separate browsers. Luckily it does not affect GPU instances by now, which yields most of the cycles.
By the...
Forum: GpuOwl 2022-06-13, 11:56
Replies: 2,772
Views: 381,733
Posted By Zhangrc
I don't think that's necessary. Could I disable...

I don't think that's necessary. Could I disable it by command settings?
I mean, I only intent to disable validation, not the proof itself.
If it's impossible, I might be forced to use a smaller...
Forum: GpuOwl 2022-06-12, 13:32
Replies: 2,772
Views: 381,733
Posted By Zhangrc
Why does proof initialization take so long?

On Google Colab, Tesla T4:


rm: cannot remove 'memlock-0': No such file or directory
20220612 13:20:23 GpuOwl VERSION v7.2-91-g9c22195
20220612 13:20:23 GpuOwl VERSION v7.2-91-g9c22195...
Forum: Cunningham Tables 2022-06-11, 11:04
Replies: 7
Views: 8,972
Posted By Zhangrc
I guess 160 digits (about 2^530). Might be larger...

I guess 160 digits (about 2^530). Might be larger than the factor of M1061.
(Seems that we haven't found a Mersenne prime factor larger than 2^500 yet)
Forum: Software 2022-06-05, 15:09
Replies: 614
Views: 50,365
Posted By Zhangrc
Congratulations! 145.823 bits. It will be a top...

Congratulations! 145.823 bits.
It will be a top 50 Mersenne P-1 factor! (Actually #31)

Sorry it's composite
1687527225171984824447 × 46756201253116844724239
Forum: Software 2022-06-04, 03:05
Replies: 614
Views: 50,365
Posted By Zhangrc
You are simply wasting time. You could try...

You are simply wasting time.
You could try small exponents such as Mersenne cofactors first (at 13M), then LL double checks as PRP (at 64M), then PRP double check with proof at 82M(even if your...
Forum: Miscellaneous Math 2022-05-26, 03:02
Replies: 576
Views: 72,009
Posted By Zhangrc
You are speaking nonsense. 1. I haven't had a...

You are speaking nonsense.
1. I haven't had a Geforce 3060.
2. I've never thought of signing my name on all of 108.3M exponents.
3. It's not because of the front-wave crowds, instead, It's because...
Forum: Software 2022-05-02, 10:28
Replies: 227
Sticky: Prime95 30.7
Views: 33,099
Posted By Zhangrc
Maybe all-complex FFT with AVX-512 instruction...

Maybe all-complex FFT with AVX-512 instruction set is faster.
FFT uses complex numbers, if we compute a complex number directly instead of computing the real and imaginary part respectively, we...
Forum: Information & Answers 2022-04-28, 08:47
Replies: 4
Views: 606
Posted By Zhangrc
I've never encountered it until yesterday. When...

I've never encountered it until yesterday. When Gerbitz checking failed, I was frightened. My exponent, M109529873, was 96% done. So I decided to finish it anyway, instead of starting from scratch....
Forum: PrimeNet 2022-04-26, 02:32
Replies: 137
Views: 45,489
Posted By Zhangrc
It needs patience. It might take years for him to...

It needs patience. It might take years for him to find another cloud computing service.
By the way, why don't you set your account to get smallest exponents and put your computer to work at current...
Forum: Software 2022-04-24, 12:31
Replies: 614
Views: 50,365
Posted By Zhangrc
30.8 uses a larger FFT in stage 2. ...

30.8 uses a larger FFT in stage 2.



That's George's decision. He is so talented, don't put extra pressure on him and he'll give us a surprise!
Maybe it will be 30.9b1, because George said that...
Forum: GpuOwl 2022-04-23, 04:28
Replies: 34
Views: 2,885
Posted By Zhangrc
Why is CUDALucas using a larger FFT but...

Why is CUDALucas using a larger FFT but considerably faster than GPUowl?
Forum: Software 2022-04-20, 00:19
Replies: 614
Views: 50,365
Posted By Zhangrc
It's not a bug, instead, that's what P-1 is...

It's not a bug, instead, that's what P-1 is expected to yield.
take M67 for example:

2^67-1=
193707721 (k=2^2*3^3*5*2677)
*761838257287 (k=3^2*29*2551*8539)

So, you know, P-1 will find both...
Forum: Data 2022-04-18, 03:45
Replies: 149
Views: 11,793
Posted By Zhangrc
Does this project involve TF? I saw some...

Does this project involve TF?
I saw some exponents at 38.1M with TF done to 2^71, and it would be fairly easy to TF all of them to 2^73.
May I reserve that range for TF?
Forum: Data 2022-04-16, 02:52
Replies: 1,401
Views: 185,100
Posted By Zhangrc
Last one! I bet that factor will be found in...

Last one!
I bet that factor will be found in minutes:bounce wave:
Forum: Data 2022-04-15, 14:03
Replies: 1,401
Views: 185,100
Posted By Zhangrc
This project will complete in several hours…… ...

This project will complete in several hours……
Only 5 factors left, and tomorrow morning it will be done.
Congratulations!
Forum: Data 2022-04-10, 02:42
Replies: 1,401
Views: 185,100
Posted By Zhangrc
And 108.9M too, it needs only 2 more factors! ...

And 108.9M too, it needs only 2 more factors!
But it should be done anyway before the project finishes.
Forum: PrimeNet 2022-04-09, 14:57
Replies: 2,487
Views: 308,002
Posted By Zhangrc
One year ago, PrimeNet stopped releasing first...

One year ago, PrimeNet stopped releasing first time LL tests.
I think it's now time to stop giving credit to first time LL results (DC should not be affected).
Forum: Software 2022-04-09, 02:10
Replies: 614
Views: 50,365
Posted By Zhangrc
@George: Could you allow "Minutes between disk...

@George:
Could you allow "Minutes between disk saves" be adjusted to less than 10?
I have several colab instances which terminate randomly and the time is limited. However, I see no restrictions on...
Forum: PrimeNet 2022-04-02, 03:50
Replies: 2,487
Views: 308,002
Posted By Zhangrc
You have to get them manually. Put the lines to...

You have to get them manually. Put the lines to worktodo.txt and let Prime95 automatically reserve them.
Forum: Software 2022-03-30, 23:51
Replies: 614
Views: 50,365
Posted By Zhangrc
At least you completed stage 1. Usually I...

At least you completed stage 1.
Usually I couldn't finish stage 1 due to SUMOUT ERRORS.
Anyway, I'm not trying to reproduce it this time. I'm switching P-1 to PRP.
Showing results 1 to 25 of 261

 
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