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Forum: Factoring 2022-06-12, 10:44
Replies: 20
Views: 985
Posted By henryzz
I misread your posts and thought that example was...

I misread your posts and thought that example was on the original definition.
Based on your revised definition:
3^2*p^2*q^2*r^2
3^2*p^2*q^8
3^2*p^26
All terminate with a length 1 cycle. The...
Forum: Factoring 2022-06-11, 20:33
Replies: 20
Views: 985
Posted By henryzz
Many cases seem to provably terminate. Many...

Many cases seem to provably terminate. Many cycles are also provable.



There is a fairly obvious cycle that occurs for all primes > 2. (p -> 2*p -> 8*p -> p)


@Villiam 75 goes to 450 not...
Forum: GPU Computing 2022-06-07, 15:21
Replies: 7
Views: 510
Posted By henryzz
Would it possible to power the gpu using a...

Would it possible to power the gpu using a separate power supply? A second power supply can be used if you use something like...
Forum: Software 2022-06-05, 12:48
Replies: 6
Views: 675
Posted By henryzz
Congrats on getting this to compile. I have tried...

Congrats on getting this to compile. I have tried 2-3 times and failed. Is there any chance you could write up exactly how you did it so that others can do it in the future?






If you...
Forum: Factoring 2022-05-30, 08:22
Replies: 29
Views: 33,799
Posted By henryzz
Based on the output I am 90% sure that is Yafu...

Based on the output I am 90% sure that is Yafu output.
The scaling is also off what I would expect which suggests that parameters are suboptimal to me.
Forum: Software 2022-05-25, 12:32
Replies: 613
Views: 49,471
Posted By henryzz
If multiple factors are found you will just get a...

If multiple factors are found you will just get a composite factor found which is probably trivially factored.
Forum: GpuOwl 2022-04-25, 13:20
Replies: 34
Views: 2,797
Posted By henryzz
According to...

According to https://www.anandtech.com/show/15978/micron-spills-on-gddr6x-pam4-signaling-for-higher-rates-coming-to-nvidias-rtx-3090 GDDR6X would actually be better named GQDR6X. Maybe the quad data...
Forum: Msieve 2022-04-12, 13:06
Replies: 2,217
Views: 221,162
Posted By henryzz
No. This would be a nice way of doing it although...

No. This would be a nice way of doing it although it requires knowing the set of numbers to factorise prior to starting.


The method currently available to the forum involves using the normal...
Forum: Msieve 2022-04-12, 10:03
Replies: 2,217
Views: 221,162
Posted By henryzz
I was more envisoning using the cado siever and...

I was more envisoning using the cado siever and running it as a forum project as I believe it would be more robust to the odd parameterisations that this would generate. For example putting 4x^8 +...
Forum: Msieve 2022-04-11, 19:40
Replies: 2,217
Views: 221,162
Posted By henryzz
Are there any slightly larger candidates with the...

Are there any slightly larger candidates with the same algebraic polynomials that would be best as snfs? I wonder whether there is any sense in attempting a nfs factory approach to factoring them.
...
Forum: Factoring 2022-04-10, 07:46
Replies: 1,015
Views: 139,415
Posted By henryzz
Factoring...

Factoring 1528152860898312226820507829734311038694803153043007 ^ 5 - 1 has reduced the proof for 13^4 to 2500 to a third of its previous size(15.6M stat_rec vs 46.4M stat_rec).
Currently have 7/15...
Forum: NFS@Home 2022-04-06, 13:18
Replies: 118
Views: 14,651
Posted By henryzz
Exactly edit: By default it does. I think...

Exactly


edit: By default it does. I think it now aims to not care. You could even have two algebraic I think.
Forum: NFS@Home 2022-04-06, 10:19
Replies: 118
Views: 14,651
Posted By henryzz
I have edited my post to add the SNFS...

I have edited my post to add the SNFS difficulty(yes SNFS 204) and change lss: 0 to lss: 1. We definitely want to sieve on the rational side.
Forum: NFS@Home 2022-04-06, 09:12
Replies: 118
Views: 14,651
Posted By henryzz
QUEUED AS 152__007_5m1 SNFS for OPN...

QUEUED AS 152__007_5m1

SNFS for OPN candidate 1528152860898312226820507829734311038694803153043007 ^ 5 - 1
ECMed 4200+ curves at 26e7



# SNFS difficulty is 204.737 which is approximately...
Forum: Factoring 2022-04-05, 04:18
Replies: 1,015
Views: 139,415
Posted By henryzz
Sounds like the sieve region should be altered to...

Sounds like the sieve region should be altered to 40M-100M. This reduces the estimated relations to 204M. This is still on the high side but I have read large quartics have a higher dup rate.
Forum: Factoring 2022-04-03, 20:44
Replies: 1,015
Views: 139,415
Posted By henryzz
Have done some test sieving for this number with...

Have done some test sieving for this number with 14e. lpbr/a combinations of 31/31, 31/30 and 30/30 provide 4180, 3274 and 2252 relations respectively (test sieve at q=70M). Speed is very similar....
Forum: Factoring 2022-03-30, 19:31
Replies: 1,015
Views: 139,415
Posted By henryzz
How much ECM should be done on this candidate...

How much ECM should be done on this candidate given it will be a quartic?
Have run 1280 curves at B1=80000000, B2=288621393076 assisted by my GPU. This plus other smaller work leaves it at 1.5x t45...
Forum: Factoring 2022-03-29, 09:50
Replies: 1,015
Views: 139,415
Posted By henryzz
Does anyone have an ECM status for...

Does anyone have an ECM status for 1528152860898312226820507829734311038694803153043007^5-1?

This would shorten the proof for 13 quite a bit. 1528152860898312226820507829734311038694803153043007...
Forum: GPU Computing 2022-03-26, 09:41
Replies: 381
Views: 62,737
Posted By henryzz
That seems to compile and run. I am not sure I...

That seems to compile and run. I am not sure I triggered those codepaths though.
Forum: GpuOwl 2022-03-25, 09:43
Replies: 33
Views: 1,484
Posted By henryzz
I have CUDA working flawlessly. When I got CUDA...

I have CUDA working flawlessly. When I got CUDA working I tried and failed to get OpenCL working. That was very early days for WSL2 GPU acceleration though(Windows preview).
Forum: GPU Computing 2022-03-23, 22:49
Replies: 381
Views: 62,737
Posted By henryzz
The error in post #376 still exists. Once I...

The error in post #376 still exists. Once I avoided that(not sure if I correctly did) it compiles and runs.


I think Q is probably wrongly typed. Taking the absolute value of an unsigned integer...
Forum: YAFU 2022-03-22, 09:24
Replies: 16
Views: 853
Posted By henryzz
Not aware of this being available. For numbers...

Not aware of this being available. For numbers that could vaguely benefit from this cado probably isn't a bad option.
Forum: Factoring 2022-03-17, 09:37
Replies: 143
Views: 15,870
Posted By henryzz
If thats the case then a kernal benchmark would...

If thats the case then a kernal benchmark would be useful that identifies the fastest kernels for each card. I currently have a version with all the possible kernals added upto 300 digits or so.
Forum: GPU Computing 2022-03-10, 18:54
Replies: 4
Views: 635
Posted By henryzz
https://forums.tomshardware.com/threads/making-use...

https://forums.tomshardware.com/threads/making-use-of-a-discrete-gpu-card-tesla-k20.3566716/ indicates that it may be SLI although it does question whether it will work.
Forum: Hardware 2022-03-05, 17:09
Replies: 11
Views: 1,317
Posted By henryzz
Assuming TDP is maxed turning off AVX 512 quite...

Assuming TDP is maxed turning off AVX 512 quite possibly would be more efficient then. Although if both run at the same clock speed throughout then they may not be TDP limited.
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