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Forum: Software 2022-05-25, 12:32
Replies: 589
Views: 44,016
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: 2,436
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: 2,210
Views: 216,244
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: 2,210
Views: 216,244
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: 2,210
Views: 216,244
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: 136,036
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: 111
Views: 13,552
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: 111
Views: 13,552
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: 111
Views: 13,552
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: 136,036
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: 136,036
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: 136,036
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: 136,036
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: 61,550
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: 1,308
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: 61,550
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: 723
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: 14,856
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: 535
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: 1,182
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.
Forum: Hardware 2022-03-04, 08:35
Replies: 11
Views: 1,182
Posted By henryzz
What was the power usage like for AVX-512 vs...

What was the power usage like for AVX-512 vs FMA3? I suspect that FMA3 may be more efficient on your system(and many others). Was the same frequency held for the AVX-512 benchmark?
Forum: Hardware 2022-02-28, 19:32
Replies: 139
Views: 19,746
Posted By henryzz
Have seen voltage decrease in a UK home by 5v as...

Have seen voltage decrease in a UK home by 5v as an electric heater turned on(admittedly a 1kw power draw).
Forum: Linux 2022-02-14, 16:18
Replies: 3
Views: 1,228
Posted By henryzz
It depends on local electricity costs. For many...

It depends on local electricity costs. For many using cloud compute half way across the world is far cheaper. It is a bit more expensive for many others.
Forum: Factoring 2022-02-06, 17:34
Replies: 487
Views: 74,418
Posted By henryzz
How many digits does a quartic add to the...

How many digits does a quartic add to the factorization at this size? I assume less than 55 digits (56 more would allow a sextic).
Forum: FactorDB 2022-02-04, 09:48
Replies: 549
Views: 101,873
Posted By henryzz
Now seem to be factors of 10^88+x Also an...

Now seem to be factors of 10^88+x


Also an issue is:
http://factordb.com/index.php?id=1100000002882233683
http://factordb.com/index.php?id=1100000002882233457...
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