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Search: Posts Made By: henryzz
Forum: Software 2021-10-26, 10:27
Replies: 588
Views: 84,468
Posted By henryzz
Have you tried multiple instances of mtsieve?

Have you tried multiple instances of mtsieve?
Forum: Linux 2021-10-25, 15:21
Replies: 7
Views: 196
Posted By henryzz
Or in a text editor such as Notepad++ replace ",...

Or in a text editor such as Notepad++ replace ", " with "(100k)\n"
Forum: FactorDB 2021-10-24, 19:25
Replies: 25
Views: 2,673
Posted By henryzz
@firejuggler Do you know the url format to query...

@firejuggler Do you know the url format to query a number and get its factors in text form?
Forum: Software 2021-10-21, 08:06
Replies: 22
Views: 584
Posted By henryzz
Might be worth checking if any of these pcs need...

Might be worth checking if any of these pcs need a dedusting before stress testing them. Some would also recommend replacing the thermal compound if the pcs have been idle for a few years.
Forum: Prime Gap Searches 2021-10-20, 10:19
Replies: 39
Views: 3,417
Posted By henryzz
You may be aware of this already but mpz_class...

You may be aware of this already but mpz_class (the c++ bindings for gmp) is quite a bit less clunky than mpz_t although some functions require mpz_t (which can be easily extracted from mpz_class).
Forum: Homework Help 2021-10-20, 10:00
Replies: 14
Views: 923
Posted By henryzz
Thanks for the updated link. This version made it...

Thanks for the updated link. This version made it clearer that while they have generalized Prest
and Zimmermann's extension to Montgomery's method, it isn't an improvement to the asymptotic...
Forum: Homework Help 2021-10-19, 15:51
Replies: 14
Views: 923
Posted By henryzz
This looks like an interesting paper that seems...

This looks like an interesting paper that seems to generate some potentially useable non-linear polynomials for some small examples. Is there any code anyway that implements some of these ideas? I...
Forum: Factoring 2021-10-19, 12:48
Replies: 60
Views: 4,421
Posted By henryzz
What is the difference between limiting...

What is the difference between limiting cofactorization using lambda and mfb? Are these bounds applied at different stages? It looks to me like the lambda limits are used when the exact size of the...
Forum: Factoring 2021-10-18, 22:12
Replies: 60
Views: 4,421
Posted By henryzz
Switching degree may change the best side to...

Switching degree may change the best side to sieve on as well. Increasing the degree reduces the size of the norms on the rational side and increases those on the algebraic. For a large deg5 job...
Forum: Factoring 2021-10-18, 16:45
Replies: 60
Views: 4,421
Posted By henryzz
What polynomial degree are you using? 5?

What polynomial degree are you using? 5?
Forum: Software 2021-10-17, 13:28
Replies: 7
Views: 326
Posted By henryzz
Might be wrong but I think it will run an llr...

Might be wrong but I think it will run an llr test after a prp result
Forum: YAFU 2021-09-30, 22:56
Replies: 15
Views: 1,474
Posted By henryzz
It is probably a 5 minute fix

It is probably a 5 minute fix
Forum: YAFU 2021-09-26, 20:09
Replies: 291
Views: 21,240
Posted By henryzz
Written for an older version but...

Written for an older version but https://mersenneforum.org/showthread.php?t=23087 should be useful. Any differences to this probably should be added (in an appendix if they don't affect Ubuntu).
Forum: Linux 2021-09-21, 18:05
Replies: 7
Views: 692
Posted By henryzz
Thank you. That does look much easier to fiddle...

Thank you. That does look much easier to fiddle with. Most of my contact with python has been through editting existing scripts on this forum(sometimes heavily). This has lead to a fairly narrow...
Forum: Linux 2021-09-21, 08:36
Replies: 7
Views: 692
Posted By henryzz
Thank you. This works with very low memory...

Thank you. This works with very low memory usage(not even 1GB).

The only issue is that it outputs in a different format:
[('comp1', count1), ('comp2',count2)]while the previous method outputs:...
Forum: Linux 2021-09-20, 17:36
Replies: 7
Views: 692
Posted By henryzz
I have used those options(and forgot about them...

I have used those options(and forgot about them when writing the post). This reduces the memory usage down to the buffer + the file size. It slows it down significantly though.


The number of...
Forum: Linux 2021-09-20, 15:17
Replies: 7
Views: 692
Posted By henryzz
Low memory line counting in huge files

I have been running a program that outputs a line to a file every time it encounters a composite. Many of these lines are duplicated and I am interested in targeting the composites that are...
Forum: GPU Computing 2021-09-20, 12:19
Replies: 8
Views: 843
Posted By henryzz
The one you linked mentioned FP64 support at...

The one you linked mentioned FP64 support at least in the xe-hp variant. I would imagine that we will see 1/32 speed or similar dp support in the consumer variant as well for code compatibility.
Forum: Msieve 2021-09-19, 08:02
Replies: 66
Sticky: Msieve GPU LA
Views: 4,783
Posted By henryzz
I looked through the code a few years ago and...

I looked through the code a few years ago and found no issues. Lasieve4 is also fine although it is limited to 96 bit mfba/r.
Forum: Software 2021-09-09, 14:19
Replies: 7
Views: 534
Posted By henryzz
This would be a nice feature but far from...

This would be a nice feature but far from necessary as there are workarounds. If I recall correctly the code implementing this sort of thing is a mess in PFGW and rogue has avoided playing with it...
Forum: Factoring 2021-09-09, 14:06
Replies: 965
Views: 115,328
Posted By henryzz
I have finally had time to think further on this...

I have finally had time to think further on this and have a few more questions:

Am I correct in thinking that 5 being a Fermat prime made it easier to determine the optimal way of finding all the...
Forum: Hardware 2021-09-05, 21:00
Replies: 12
Views: 891
Posted By henryzz
I was under the impression that power usage was...

I was under the impression that power usage was O(f * V^2) of cause higher frequency requires higher voltage(perhaps giving O(f^3) in some ranges of f).
Forum: Factoring 2021-09-01, 21:11
Replies: 96
Views: 5,676
Posted By henryzz
My guess is that your gcc version may be too old....

My guess is that your gcc version may be too old. I would try the most recent version you can get your hands on. The easiest way may be to update your OS into a version that isn't end of life.
Forum: Factoring 2021-09-01, 09:28
Replies: 10
Views: 413
Posted By henryzz
That will affect efficiency not cause it to...

That will affect efficiency not cause it to crash.



Two ideas:

Can the ggnfs siever understand lss? At best it will ignore it I think.

We have had issues in the past with compilers...
Forum: Factoring 2021-08-29, 14:29
Replies: 15
Views: 1,392
Posted By henryzz
c169 1/8: 1 = 120118613191929471309914301089279...

c169 1/8: 1 = 120118613191929471309914301089279 (33 digits) * c137

c274 1/8: 2 = 510031915039841133936511192966368943 (36 digits) * c238

c99 1/8: 7 = 3671595612167512594604024710268314567 (37...
Showing results 1 to 25 of 1000

 
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