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Forum: Soap Box 2022-11-30, 11:45
Replies: 2
Views: 31
Posted By henryzz
Sea levels are rising

The global sea level is currently rising by around 3.7 mm per year according to https://en.wikipedia.org/wiki/Sea_level#Change

I recently had the crazy idea that we could potentially store enough...
Forum: Cunningham Tables 2022-11-28, 10:41
Replies: 66
Views: 23,624
Posted By henryzz
What proportion of users would be lost due to...

What proportion of users would be lost due to raising memory limits? Maybe it is time to create a new queue with larger limits. I suspect you could afford to lose a sizeable proportion as higher...
Forum: YAFU 2022-11-27, 00:22
Replies: 90
Views: 3,493
Posted By henryzz
I have manage to compile on another system...

I have manage to compile on another system avoiding this issue so it is something system dependent. Not a clue what is causing this.


Typically for linux copying across the binary wasn't a...
Forum: YAFU 2022-11-26, 16:35
Replies: 90
Views: 3,493
Posted By henryzz
That was deliberate. I plan to use the binary for...

That was deliberate. I plan to use the binary for just SIQS. Msieve was yet another dependency to include. The list has grown quite long. I will try to add NFS=1 which will require msieve


...
Forum: YAFU 2022-11-26, 12:40
Replies: 90
Views: 3,493
Posted By henryzz
Getting the error: make: *** No rule to make...

Getting the error:
make: *** No rule to make target `arith/arith.o', needed by `yafu'. Stop.


When trying to compile with:
make yafu NFS=0 USE_SSE41=1 USE_AVX2=1 USE_BMI2=1 SKYLAKEX=1

...
Forum: Cunningham Tables 2022-11-22, 12:32
Replies: 42
Views: 4,322
Posted By henryzz
I believe he is well aware of this list. ...

I believe he is well aware of this list.






A very quick google suggested that RSA 768(232 digits), RSA-240 and RSA-250 have all been factored with more digits than this.
Forum: Puzzles 2022-11-07, 16:32
Replies: 6
Views: 779
Posted By henryzz
Paterson primes

I have just watched Numberphile's video on a class of primes that a school friend of 3Blue1Brown came up with.

https://www.youtube.com/watch?v=jhObLT1Lrfo

This friend noticed that if you take...
Forum: Factoring 2022-10-27, 13:02
Replies: 1,027
Views: 153,191
Posted By henryzz
Thank you, Pascal, for posting this. I will use...

Thank you, Pascal, for posting this. I will use this to help my work on taking most of the proof tree to 2500(and identifying the bits that this is difficult for). I also hope to post lists of...
Forum: Factoring 2022-10-26, 08:21
Replies: 1,027
Views: 153,191
Posted By henryzz
Does anyone have an automated way of checking for...

Does anyone have an automated way of checking for OPN factors from the factordb?
Forum: YAFU 2022-10-21, 19:29
Replies: 82
Views: 7,446
Posted By henryzz
Thanks for the hint. I think it is something to...

Thanks for the hint.
I think it is something to do with montgomery_mul.h being referenced from multiple places. It seems to be in both strategy.o and liblasieve.a.
Forum: YAFU 2022-10-21, 18:00
Replies: 82
Views: 7,446
Posted By henryzz
I am struggling to get the code I have to...

I am struggling to get the code I have to compile. I am getting many multiple definition errors for functions like asm_zero, asm_copy etc.

The strange thing is that I am getting these errors on...
Forum: YAFU 2022-10-21, 14:22
Replies: 82
Views: 7,446
Posted By henryzz
The f and g versions probably don't have many of...

The f and g versions probably don't have many of the ggnfs modifications although there have been working versions of the f siever around in the past. The f version allows composite special q and...
Forum: YAFU 2022-10-14, 10:21
Replies: 82
Views: 7,446
Posted By henryzz
On a side note to this: Ben is rewriting much...

On a side note to this:
Ben is rewriting much of the asm code as it is. How much more difficult would it be to create a version that would support I>16 compared with the work he is currently doing?...
Forum: Cunningham Tables 2022-10-03, 10:01
Replies: 42
Views: 4,322
Posted By henryzz
Sounds like your next research project. The CPU...

Sounds like your next research project.
The CPU version of msieve sounds like it would be fine for this study although it would be worth considering how the distribution parameters vary with...
Forum: Software 2022-10-02, 11:49
Replies: 769
Views: 82,403
Posted By henryzz
Replace dir with ls I typically store all...

Replace dir with ls

I typically store all my data on the windows drives from wsl2.
Forum: Hardware 2022-09-30, 14:48
Replies: 21
Views: 95,986
Posted By henryzz
Am I correct in thinking that microcoded...

Am I correct in thinking that microcoded instructions can be improved by updates? If so would it be worth you communicating with AMD about the potential for an improved version of vpcompressd?

I...
Forum: Msieve 2022-09-27, 13:46
Replies: 8
Views: 1,792
Posted By henryzz
I think...

I think https://stackoverflow.com/questions/35688925/what-does-the-abi-compile-yes-option-of-cuda-ptxas-do-which-costs-registers explains this.




I think --abi-compile no is the modern...
Forum: Hardware 2022-09-27, 13:20
Replies: 20
Views: 3,159
Posted By henryzz
The really interesting cpus will be the ones with...

The really interesting cpus will be the ones with 3D cache when they come out. Rumors online seem to suggest early next year might be a timeframe for these(annoucement at CES which is Jan 5-8)
Forum: GPU Computing 2022-09-23, 10:35
Replies: 28
Views: 2,344
Posted By henryzz
MCM is inevitable and has been for some time....

MCM is inevitable and has been for some time. They just needed the cost/reward to hit a critical point. We appear to be reaching that point.
It was dabbled with many years ago with Core 2 Quads...
Forum: Factoring 2022-09-22, 12:46
Replies: 219
Views: 35,771
Posted By henryzz
lasieve5 contains ecm/p-1 code that no one uses....

lasieve5 contains ecm/p-1 code that no one uses. It is only activated with a parameter file present. The format for this parameter file is pretty hard to understand and there is no documentation....
Forum: Factoring 2022-08-08, 16:16
Replies: 25
Views: 2,625
Posted By henryzz
Interesting. I have modified bur's pari gp code...

Interesting. I have modified bur's pari gp code to support the new form and to detect loops(not the length)

tau(n) = {
t = 1;
f = factor(n);
for(i = 1, matsize(f)[1],
t *= f[i,2]+1
);
...
Forum: NFS@Home 2022-07-15, 11:53
Replies: 5
Views: 555
Posted By henryzz
Are there any possible compensations that can be...

Are there any possible compensations that can be done for a polynomial like this? Would composite special qs including one or more of the rare small primes(plus a larger prime?) be a possible option?
Forum: Factoring 2022-06-12, 10:44
Replies: 25
Views: 2,625
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: 25
Views: 2,625
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: 1,582
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...
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