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Forum: Factoring 2021-10-18, 16:45
Replies: 53
Views: 3,912
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: 6
Views: 210
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: 1,410
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: 20,335
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: 630
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: 630
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: 630
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: 630
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: 788
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: 60
Sticky: Msieve GPU LA
Views: 4,246
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: 510
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: 114,896
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: 839
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: 92
Views: 5,098
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: 372
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: 1,327
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...
Forum: Factoring 2021-08-29, 07:08
Replies: 92
Views: 5,098
Posted By henryzz
Reducing S_BITS_PER_CALL has fixed it for me....

Reducing S_BITS_PER_CALL has fixed it for me. Thank you 😀
Forum: Factoring 2021-08-28, 22:40
Replies: 92
Views: 5,098
Posted By henryzz
The same thing. If I run less curves at...

The same thing.


If I run less curves at once it works. Possibly just that my gpu is pathetic (750 Ti):
echo "(2^499-1)/20959" | ./ecm -gpu -cgbn -sigma 3:1000 20000
GMP-ECM 7.0.5-dev...
Forum: Factoring 2021-08-28, 21:55
Replies: 92
Views: 5,098
Posted By henryzz
With Wraith's patch(with the header fixed) I now...

With Wraith's patch(with the header fixed) I now get:
echo "(2^499-1)/20959" | ./ecm -gpu -cgbn -gpucurves 3584 -sigma 3:1000 2000
GMP-ECM 7.0.5-dev [configured with GMP 6.2.99, --enable-asm-redc,...
Forum: GPU Computing 2021-08-28, 16:51
Replies: 375
Views: 53,756
Posted By henryzz
I have a more recent version of CUDA than you...

I have a more recent version of CUDA than you linked in(11.4 rather than 8). As such I tried to recompile. I got the following error:
/usr/local/cuda/bin/nvcc -g -O3 -I/usr/local/cuda/include -I....
Forum: Factoring 2021-08-28, 16:27
Replies: 92
Views: 5,098
Posted By henryzz
There still seems to be cudaDeviceSynchronize...

There still seems to be cudaDeviceSynchronize issues although I get it at a very different line number.



echo "(2^499-1)/20959" | ./ecm -gpu -cgbn -gpucurves 3584 -sigma 3:1000 20000
GMP-ECM...
Forum: Factoring 2021-08-25, 11:59
Replies: 92
Views: 5,098
Posted By henryzz
This is an impressive speedup. I assume there is...

This is an impressive speedup. I assume there is no chance of stage 2 being ported to run on CUDA? GPU memory was too small back when the old GPU code was written. I suspect that may still be the...
Forum: Conjectures 'R Us 2021-08-16, 22:00
Replies: 404
Views: 71,563
Posted By henryzz
What's the minimum effective n for BOINC for base...

What's the minimum effective n for BOINC for base 3? Presumably, we should be targeting getting it to that point so that future work can be done there. E.g. No point in getting it to 50k if BOINC...
Forum: Conjectures 'R Us 2021-08-15, 11:04
Replies: 993
Views: 122,039
Posted By henryzz
Also how base 1030 when it looks like base 2?

Also how base 1030 when it looks like base 2?
Forum: Prime Gap Searches 2021-08-12, 12:56
Replies: 261
Sticky: Prime Gap News
Views: 65,452
Posted By henryzz
I have just submitted my first 30 merit gap:...

I have just submitted my first 30 merit gap: 90240 30.742 47193529 * 2999#/2303070 -50488 to +39752
This knocks two gaps off...
Showing results 1 to 25 of 1000

 
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