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Forum: Conjectures 'R Us 2021-11-11, 14:03
Replies: 484
Views: 72,287
Posted By Jean Penné
Sierpinski odd n's testing

Hi,

K=9267 is now tested up to n = 13,500,823 ; no prime found...
I am continuing with this input file sent to me by Gary.
Regards,
Jean
Forum: Software 2021-06-25, 15:15
Replies: 16
Views: 1,524
Posted By Jean Penné
Plus LLR version 4.0.0 released.

Hi All,

I uploaded today the version 4.0.0 of the LLR program.
You can find it now on my personal site :

http://jpenne.free.fr/

The 32bit Windows and Linux compressed binaries are available...
Forum: GPU Computing 2021-05-02, 15:26
Replies: 375
Views: 55,291
Posted By Jean Penné
llrCUDA version 3.8.4 is released!

Hi All,

This GPU version of the LLR program has the same features as the previous 3.8.3, but I think that the updates made from it deserve to change the version number.
Here are some of these...
Forum: Software 2021-05-02, 14:51
Replies: 60
Views: 17,825
Posted By Jean Penné
I am sorry, George, but I am seeing your post...

I am sorry, George, but I am seeing your post only to-day!
I thank you for this info. and shall take it into account as soon as possible.

Best Regards,
Jean
Forum: Software 2021-05-02, 14:39
Replies: 0
Views: 727
Posted By Jean Penné
llrCUDA version 3.8.4 is released!

Hi All,

This GPU version of the LLR program has the same features as the previous 3.8.3, but I think that the updates made from it deserve to change the version number.
Here are some of these...
Forum: Conjectures 'R Us 2021-04-24, 19:10
Replies: 484
Views: 72,287
Posted By Jean Penné
Sierpinski odd n's testing

Hi,

K=9267 is now tested up to n = 13,206,223 ; no prime found...
I am continuing with this input file sent to me by Gary.
Regards,
Jean
Forum: Software 2021-03-19, 20:29
Replies: 13
Views: 2,095
Posted By Jean Penné
I was wrong in this post : The test is all but...

I was wrong in this post :
The test is all but optimal, because it is done in generic modular reduction mode!
That is to say : this version of llrCUDA is not presently suited to test 2^n+c numbers...
Forum: Software 2021-03-12, 20:26
Replies: 13
Views: 2,095
Posted By Jean Penné
You are Fermat testing a base two and k == 1...

You are Fermat testing a base two and k == 1 number ; so, unfortunately, it is optimal for this present version of the program, but this speed depends on the GPU card you are using...
Indeed, your...
Forum: GPU Computing 2021-03-10, 20:35
Replies: 375
Views: 55,291
Posted By Jean Penné
llrCUDA version 3.8.3 Build 3 is released!

Hi All,

When a too large round off error was encountered, the test was restarted from the beginning in "cufft only" mode, which was very penalizing about elapsed time.
I fixed that in this new...
Forum: Software 2021-03-10, 20:32
Replies: 13
Views: 2,095
Posted By Jean Penné
llrCUDA version 3.8.3 Build 3 is released!

Hi All,

When a too large round off error was encountered, the test was restarted from the beginning in "cufft only" mode, which was very penalizing about elapsed time.
I fixed that in this new...
Forum: Data 2021-02-24, 09:51
Replies: 576
Views: 108,918
Posted By Jean Penné
Thank you for this detail! Jean

Thank you for this detail!

Jean
Forum: Data 2021-02-24, 09:16
Replies: 576
Views: 108,918
Posted By Jean Penné
Congrats for this nice result!

Many congrats, Paul!

Jean

P.S. : How did you do the PRP test before the certification using Primo ?
Forum: GPU Computing 2021-02-16, 06:00
Replies: 375
Views: 55,291
Posted By Jean Penné
I know that, Paul, but it will require some...

I know that, Paul, but it will require some conversions...
Thanks!
Jean
Forum: Software 2021-02-15, 20:09
Replies: 13
Views: 2,095
Posted By Jean Penné
llrCUDA version 3.8.3 Build 2 is released!

Hi All,

While Fermat testing k*b^n+c large numbers with c<0, and Gerbicz error checking activated, the final computation of the residue used a call to the invg() function in the giants.c code....
Forum: GPU Computing 2021-02-15, 20:07
Replies: 375
Views: 55,291
Posted By Jean Penné
llrCUDA version 3.8.3 Build 2 is released!

Hi All,

While Fermat testing k*b^n+c large numbers with c<0, and Gerbicz error checking activated, the final computation of the residue used a call to the invg() function in the giants.c code....
Forum: Software 2021-02-13, 07:18
Replies: 13
Views: 2,095
Posted By Jean Penné
I cannot presently build this program on windows,...

I cannot presently build this program on windows, but it is open source and any developper on a Windows 64 platform would be welcome.

Best Regards,
Jean
Forum: Software 2021-02-12, 20:30
Replies: 13
Views: 2,095
Posted By Jean Penné
llrCUDA version 3.8.3 is released!

Hi All,

I released now a new GPU version of the LLR program on my personal page : jpenne.free.fr

No much new feature, but some improvements related to reliability and speed.
- By default, all...
Forum: GPU Computing 2021-02-12, 20:26
Replies: 375
Views: 55,291
Posted By Jean Penné
llrCUDA version 3.8.3 is released!

Hi All,

I released now a new GPU version of the LLR program on my personal page : jpenne.free.fr

No much new feature, but some improvements related to reliability and speed.
- By default, all...
Forum: Conjectures 'R Us 2021-01-25, 09:09
Replies: 484
Views: 72,287
Posted By Jean Penné
Sierpinski odd n's testing

Hi,

K=9267 is now tested up to n = 13,002,247 ; no prime found...
I am continuing with this input file sent to me by Gary.
Regards,
Jean
Forum: Software 2020-11-02, 20:39
Replies: 60
Views: 17,825
Posted By Jean Penné
Switching to 3.8.24 build 3

Hi,

Jeff Gilchrist warned me about an issue in LLR 3.8.24 build 2 :

The default options for the Fermat PRP testing are :
Gerbicz error checking (-oErrorChecking=1) and
Random shift on...
Forum: Conjectures 'R Us 2020-10-25, 10:34
Replies: 484
Views: 72,287
Posted By Jean Penné
Sierpinski odd n's testing

Hi,

K=9267 is now tested up to n = 12,810,415 ; no prime found...
I am continuing with this input file sent to me by Gary.
Regards,
Jean
Forum: Conjectures 'R Us 2020-07-26, 06:02
Replies: 484
Views: 72,287
Posted By Jean Penné
Sierpinski odd n's testing

Hi,

K=9267 is now tested up to n = 12,600,343 ; no prime found...
I am continuing with this input file sent to me by Gary.
Regards,
Jean
Forum: Software 2020-07-11, 05:50
Replies: 60
Views: 17,825
Posted By Jean Penné
Ok, but I was a bit in a hurry, being now abroad...

Ok, but I was a bit in a hurry, being now abroad for two weeks in Britany...

Regards,
Jean
Forum: Software 2020-07-10, 15:21
Replies: 60
Views: 17,825
Posted By Jean Penné
I think you have better to do "make allclean"...

I think you have better to do "make allclean" and then, "make" in order to recompile the gwnum C files on your sytem, but I am not sure it will be sufficient...
Forum: Software 2020-07-09, 20:18
Replies: 60
Views: 17,825
Posted By Jean Penné
Switching to 3.8.24 build 2

Hi,

For two reasons I had to slightly modify the Llr.c code, and also the source directory :

1) In the Gerbicz code for Proth numbers testing, I add +1 to the final residue of a negative...
Showing results 1 to 25 of 581

 
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