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Forum: GPU Computing 2013-06-07, 07:00
Replies: 177
Views: 28,866
Posted By prime7989
Post GeneferCUDA is a base-2 Pepin's test as far as I...

GeneferCUDA is a base-2 Pepin's test as far as I can ascertain(please correct if I am wrong, please). To allow for Fermat number testing with the GTX-TITAN we can make it base 3 or 5 deterministic...
Forum: GPU Computing 2013-05-29, 03:15
Replies: 2,832
Views: 393,132
Posted By prime7989
Post LL on Mersenne, Fermat numbers and Pepin's test

Hi Owftheevil,Manpowre
My recomended mod to the threads in invocation of the kernel does not give the right results. It for example says M110503 is composite instead of prime. So i would suggest...
Forum: GPU Computing 2013-05-28, 20:48
Replies: 2,832
Views: 393,132
Posted By prime7989
Post For Gtx Titan in the Makefile change the option to nvcc to sm_30

For Gtx Titan in the Makefile change the option to nvcc to sm_30 instead of using sm_13 or sm_35 tell me if you get similar timings to me?
Al
Forum: GPU Computing 2013-05-28, 09:02
Replies: 2,832
Views: 393,132
Posted By prime7989
Talking which GPU do you get these timings on? On a gtx...

which GPU do you get these timings on?
On a gtx titan with the same exponent as yours for a LL with fft len=3072K
i get timings of 3.8636ms/per iteration and ETA time for all as 66:26 hrs
I...
Forum: GPU Computing 2013-05-23, 11:44
Replies: 2,832
Views: 393,132
Posted By prime7989
Smile Do you have a linux version of the source code...

Do you have a linux version of the source code versions 2.03 and 2.05 alfa?
I could give it a try for the fermat numbers. I will have to ask you questions on the forum on the mod points.
Forum: GPU Computing 2013-05-23, 07:38
Replies: 2,832
Views: 393,132
Posted By prime7989
Smile Dear Manpowre, Can you tell me the url of...

Dear Manpowre,
Can you tell me the url of your latest incarnation of CudaLucas that works on the gtx titan?
Also if you can do this:
Try modifying your code to also run Lucas-Lehmer tests on...
Forum: GPU Computing 2013-04-01, 03:43
Replies: 177
Views: 28,866
Posted By prime7989
Wink 2^p-1

Dear Batalov,axn,
Ofcourse looking at the code i know my just previous post was incomplete.
What i meant was the following mods to geneferCUDA:
1) Specify the base p-PRP as a #define macro or...
Forum: GPU Computing 2013-03-31, 04:36
Replies: 177
Views: 28,866
Posted By prime7989
Smile c=-1?

Dear axn,
How about c=-1 that is change the code in geneferCuda from so that c=-1 i.e
Input from: b^m+1 to b^m-1
prime7989
Forum: GPU Computing 2013-03-17, 09:28
Replies: 177
Views: 28,866
Posted By prime7989
Smile Extend GeneferCUDA pseudo-primality checks

Thank you axn,
I would also like to make the change to GeneferCUDA,cu such that the input instead of:
n=b^N+1
is as follows: n=b^N+c where c is an non-zero integer such that |c|<Log(n).
Thank...
Forum: GPU Computing 2013-03-17, 04:54
Replies: 177
Views: 28,866
Posted By prime7989
Thumbs up Dear axn, I dislike reading code. So please...

Dear axn,
I dislike reading code. So please which variable did you change to make it 3-PRP
in GeneferCUDA.cu, please? If you could give me the line number of the code of function and var, I...
Forum: GPU Computing 2012-10-12, 02:20
Replies: 177
Views: 28,866
Posted By prime7989
Is genefercuda correct

I tried genefercuda for a gtx680 nvidia GPU on a AMD FX8120 cpu and 32 gb ram for
Fermat number F19 which is known composite with b=2 and N=524288=2^19
and the program prints out that it is...
Forum: GPU Computing 2012-09-01, 22:52
Replies: 2,832
Views: 393,132
Posted By prime7989
Dear Luigi, Perhaps optimization might be a...

Dear Luigi,
Perhaps optimization might be a better choice of words. However since the GTX680 has only 2GIGB or RAM and the GTX660Ti max 3GB so the exponent of 2 i.e 2^n is as you say limited to...
Forum: GPU Computing 2012-09-01, 17:19
Replies: 2,832
Views: 393,132
Posted By prime7989
Faster Algorithms

Hi,msft,Luigi,Dubslow,
The goal is to find faster and faster mathematically correct deterministic algorithms for fermat and Mersennne numbers and other types of numbers so the existing software...
Forum: GPU Computing 2012-09-01, 16:39
Replies: 2,832
Views: 393,132
Posted By prime7989
Smile Hi, msft, genefer.c is a probabilistic test...

Hi, msft,
genefer.c is a probabilistic test and not deterministic.
Do you know of any Pepins of LLV type deterministic software?
Forum: GPU Computing 2012-09-01, 05:13
Replies: 2,832
Views: 393,132
Posted By prime7989
Smile Dear Dubslow, SS is just the implementation...

Dear Dubslow,
SS is just the implementation of the FFT for modulus of forms 2^m+1 where m=2^n
Please do not worry about the SS and if you can , can you do implement what I suggested without SS...
Forum: GPU Computing 2012-09-01, 03:37
Replies: 2,832
Views: 393,132
Posted By prime7989
Thumbs up How to modify CUDALucas slightly

How and where in code can one modify CUDALucas sources to accept fermat numbers
with Fn=2^2^n+1 and x[0]=5.0 with everything else being the same as the original CUDALucas?
Change input: from 2^p-1...
Forum: Miscellaneous Math 2012-07-10, 01:53
Replies: 2
Views: 959
Posted By prime7989
Smile Mersenne Psuedo Primes

Mp=2^p-1 where p=11 is a Mersenne pseudo prime using FLT with base a=11.
Does anyone know of any other Mersenne pseudo primes?
Thank you,
Allan Menezes
Showing results 1 to 17 of 17

 
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