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Forum: Software 2022-12-06, 03:34
Replies: 821
Views: 127,257
Posted By Citrix
@Rogue I can get the program to work but it...

@Rogue

I can get the program to work but it is extremely slow without the Legendre tables.

Couple of other questions/thoughts

1. I get the following error with the CPU code as well...
Forum: Software 2022-12-04, 22:05
Replies: 821
Views: 127,257
Posted By Citrix
I get with new srsieve2cl.exe -i...

I get with new


srsieve2cl.exe -i sr_2.abcd -W2 -p 10000000000000 -P 11000000000000 -Ofactors.txt -osr_2_new.abcd -M1000 -l10000 -w1000 -G12
srsieve2cl v1.6.5, a program to find factors of...
Forum: Software 2022-12-04, 20:51
Replies: 821
Views: 127,257
Posted By Citrix
I am getting the following error. What settings...

I am getting the following error. What settings do I need to change?


srsieve2cl.exe -i sr_2.abcd -W4 -p 10000000000000 -P 11000000000000 -Ofactors.txt -osr_2_new.abcd -G12 -M100000 -l1000
...
Forum: Number Theory Discussion Group 2022-10-22, 07:13
Replies: 54
Views: 13,771
Posted By Citrix
You can use mtsieve to sieve k*b^n+c and sieve 2...

You can use mtsieve to sieve k*b^n+c and sieve 2 to d-1 and then from d+1 to max.
Forum: Software 2022-10-07, 03:34
Replies: 15
Views: 1,792
Posted By Citrix
Thanks. I have been using Version 3.8.23. :smile:

Thanks. I have been using Version 3.8.23. :smile:
Forum: Software 2022-10-05, 21:50
Replies: 15
Views: 1,792
Posted By Citrix
Do we know which versions are affected by this...

Do we know which versions are affected by this bug? 3.x?
Thanks.
Forum: GPU Computing 2022-05-30, 07:57
Replies: 41
Views: 33,826
Posted By Citrix
Does anyone have a compiled windows version for...

Does anyone have a compiled windows version for the latest code? Thanks.
Forum: GPU Computing 2021-12-25, 11:26
Replies: 41
Views: 33,826
Posted By Citrix
I appreciate your efforts. I am looking to work...

I appreciate your efforts. I am looking to work on larger 32 bit bases and not larger 64 bit exponents.
For example, the current program cannot handle factoring 10000001^999431+-1
I just wanted to...
Forum: GPU Computing 2021-12-19, 03:42
Replies: 41
Views: 33,826
Posted By Citrix
Can you compile a generalized version that can...

Can you compile a generalized version that can work for any base (positive or negative) with no limits on the size of the base (<32 bits). If it does not calculate the remainders (Legendre/Jacobi...
Forum: Software 2021-11-07, 03:11
Replies: 821
Views: 127,257
Posted By Citrix
It was under a different license before. Maybe...

It was under a different license before.
Maybe this would be helpful:-
https://github.com/curtisseizert/CUDASieve
Forum: Software 2021-10-27, 03:02
Replies: 821
Views: 127,257
Posted By Citrix
The license prevents us from changing the code....

The license prevents us from changing the code. You could write a faster Sieve of Eratosthenes if you let a few composites slip through.



You can get 60MP/sec for 4 cores.
Forum: Software 2021-10-26, 04:46
Replies: 821
Views: 127,257
Posted By Citrix
The "Sieve of Eratosthenes" code becomes a bottle...

The "Sieve of Eratosthenes" code becomes a bottle neck around 10-15 Mp/sec.
Forum: Software 2021-06-28, 04:21
Replies: 482
Views: 84,310
Posted By Citrix
If doing P-1 work on (k^p-1)/(k-1) or...

If doing P-1 work on (k^p-1)/(k-1) or (k^p+1)/(k+1) with p prime
Does Prime95 automatically includes p in the B1 stage?


Thanks
Forum: Forum Feedback 2021-06-26, 17:55
Replies: 33
Views: 6,030
Posted By Citrix
Can we change back to the old font?

Can we change back to the old font?
Forum: Puzzles 2021-06-06, 05:55
Replies: 20
Views: 5,715
Posted By Citrix
In worst case scenario this can be solved in ~...

In worst case scenario this can be solved in ~ N^2 tries.

The faster practical solution (not sure if this is allowed) is to create a hash table and assign each unique letter a number.
Set the...
Forum: Software 2021-01-11, 01:35
Replies: 821
Views: 127,257
Posted By Citrix
I am getting a speed of 4kp/sec for 11 sequences...

I am getting a speed of 4kp/sec for 11 sequences from n=1M to 20M. Sr2sieve and srsieve2 are both significantly faster. Is this what is expected?
Forum: Puzzles 2021-01-05, 07:03
Replies: 13
Views: 3,800
Posted By Citrix
Sum of n consecutive numbers==> (n / 2) *(first...

Sum of n consecutive numbers==>
(n / 2) *(first number + last number) = sum

Last number=first number +n-1

n*(2*first number +n-1)-2*sum=0
first number =f

n^2+(2*f-1)*n-2*sum=0
This is a...
Forum: And now for something completely different 2020-12-22, 02:18
Replies: 8
Views: 1,778
Posted By Citrix
https://harvey563.tripod.com/ These are...

https://harvey563.tripod.com/

These are called Generalized HyperCulllen/Woodall.
Forum: Software 2020-12-03, 04:52
Replies: 4
Views: 2,094
Posted By Citrix
srsieve can handle multiple base 10 sequences at...

srsieve can handle multiple base 10 sequences at once.

eg)
srsieve.exe --pfgw --nmin 1 --nmax 10000 --pmin 1 --pmax 10000 --factors "3*10^n+1" "2*10^n-1"
Forum: Puzzles 2020-10-23, 06:41
Replies: 31
Views: 7,256
Posted By Citrix
Cannot say about the origin. The badge could...

Cannot say about the origin. The badge could belong to a group, trade organization etc. It could just be for decorative purposes.

Oil lamp = Service
Lightning bolt= Illumination
Statue of...
Forum: Puzzles 2020-10-02, 05:47
Replies: 34
Views: 9,986
Posted By Citrix
Possible hint if I understand the question...

Possible hint if I understand the question correctly (I agree that the language is not very clear).


Hint:...
Forum: Software 2020-09-24, 05:31
Replies: 134
Views: 42,629
Posted By Citrix
I tried to replace mulmod by powmod to avoid...

I tried to replace mulmod by powmod to avoid unnecessary multiplication. I get an error during run time. Any idea why the calculations are not being done correctly?


void ...
Forum: Software 2020-09-24, 03:45
Replies: 134
Views: 42,629
Posted By Citrix
Robert, I think you are correct. I came to the...

Robert, I think you are correct. I came to the same conclusion when reviewing the code. Though for sr1sieve there would not be any need to calculate b^d (mod p) for particular d values as there is no...
Forum: Software 2020-09-21, 17:26
Replies: 134
Views: 42,629
Posted By Citrix
I am looking at BestQ code uint32_t ...

I am looking at BestQ code



uint32_t GenericSubsequenceHelper::RateQ(uint32_t Q, uint32_t s)
{
uint32_t baby, giant, work;

ChooseSteps(&baby, &giant, Q, s);
Forum: Software 2020-08-22, 03:48
Replies: 134
Views: 42,629
Posted By Citrix
I modified sr1sieve to read any Q from command...

I modified sr1sieve to read any Q from command line and got significant benefit for low weight series. I am trying to combine the benefit with your faster FPU/AVX code.

The problem modifying...
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