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Search: Posts Made By: henryzz
Forum: Hardware 2021-12-02, 21:46
Replies: 175
Views: 36,539
Posted By henryzz
Can't help feeling that there is a lot of old...

Can't help feeling that there is a lot of old tech in there.
A53 (2012)
DDR3 (2007)
802.11g wifi (2003)
Bluetooth 4.0 (2010)
Forum: Factoring 2021-11-28, 04:43
Replies: 101
Views: 7,944
Posted By henryzz
May have discovered the issue. I think I need to...

May have discovered the issue. I think I need to update CGBN
edit: confirmed
Forum: Factoring 2021-11-27, 22:05
Replies: 101
Views: 7,944
Posted By henryzz
Just tried to upgrade my version of this as I was...

Just tried to upgrade my version of this as I was on a fairly old version and certain numbers were crashing.

Compiling has failed with the following error:

/bin/bash ./libtool --tag=CC...
Forum: Cunningham Tables 2021-11-23, 11:38
Replies: 317
Views: 45,372
Posted By henryzz
Is the plan to do this matrix on a CPU or to pass...

Is the plan to do this matrix on a CPU or to pass it off to a GPU? I get the impression frin https://mersenneforum.org/showthread.php?t=27042 that a GPU would do it far faster although it would need...
Forum: Hardware 2021-11-23, 11:35
Replies: 8
Views: 342
Posted By henryzz
Even with a form of AVX512 are 1st gen Phi cards...

Even with a form of AVX512 are 1st gen Phi cards worth worrying about now? Wouldn't a single modern cpu (Zen 3?) match it in efficiency?
Forum: Information & Answers 2021-11-15, 08:46
Replies: 19
Views: 1,464
Posted By henryzz
Didn't you have a form that could be proved for...

Didn't you have a form that could be proved for all of -1/+1/+5 that could be sieved using polysieve?
Forum: CADO-NFS 2021-11-12, 07:36
Replies: 18
Views: 970
Posted By henryzz
Do you have a spare power supply?

Do you have a spare power supply?
Forum: Cunningham Tables 2021-11-09, 23:33
Replies: 317
Views: 45,372
Posted By henryzz
That's weird. My system takes 185s with 3e7 and...

That's weird. My system takes 185s with 3e7 and 322s without bkthresh1

./las -poly 3_748plus.poly -q0 100000000 -A 30 -nq 20 -lim0 500000000 -lim1 300000000 -lpb0 33 -lpb1 34 -mfb0 66 -mfb1 98...
Forum: Cunningham Tables 2021-11-09, 14:52
Replies: 317
Views: 45,372
Posted By henryzz
Too high -bkthresh certainly will slow it down. I...

Too high -bkthresh certainly will slow it down. I think you want a fairly equal amount of work before and after the threshold. What values have you tried? Finding a good value may be difficult with...
Forum: Cunningham Tables 2021-11-09, 09:00
Replies: 317
Views: 45,372
Posted By henryzz
My experience is that you can save a fair bit of...

My experience is that you can save a fair bit of memory using -bkthresh1 without affecting speed significantly. I think I even saw a very small speedup with the right value.



Found my post...
Forum: Software 2021-11-01, 07:41
Replies: 32
Views: 1,608
Posted By henryzz
Yes Linux on a modern machine. Wine emulates a...

Yes Linux on a modern machine. Wine emulates a Windows environment for progrmas on Linux. While they do update it for modern programs it runs old programs very well as that is when it was developed....
Forum: Software 2021-10-29, 16:03
Replies: 16
Views: 1,518
Posted By henryzz
I don't think so. If you can compile gwnum (which...

I don't think so. If you can compile gwnum (which you use in pfgw) then you are closer to building it than most.
Forum: Software 2021-10-29, 06:29
Replies: 32
Views: 1,608
Posted By henryzz
Have you tried running any of these on Linux?...

Have you tried running any of these on Linux? Wine can sometimes run old windows programs better than windows itself.
Forum: FactorDB 2021-10-28, 14:02
Replies: 26
Views: 3,659
Posted By henryzz
That's close although I would like just the text....

That's close although I would like just the text. The text is probably extractable.
Forum: Cunningham Tables 2021-10-26, 17:55
Replies: 317
Views: 45,372
Posted By henryzz
Adjust strategy 2 has a tendency towards...

Adjust strategy 2 has a tendency towards selecting regions that need more memory at lower q.
Forum: Software 2021-10-26, 10:27
Replies: 598
Views: 87,301
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: 512
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: 26
Views: 3,659
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: 32
Views: 1,608
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: 48
Views: 4,878
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: 1,414
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: 1,414
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: 5,108
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: 5,108
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: 5,108
Posted By henryzz
What polynomial degree are you using? 5?

What polynomial degree are you using? 5?
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