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-   -   Choose your own K and work on finding a top-5000 prime! (https://www.mersenneforum.org/showthread.php?t=4963)

VBCurtis 2020-03-29 16:05

If you run LLR single-threaded at those tiny n-values, you'll get much better production. LLR doesn't multi-thread well when FFT size is smaller than 128K * # of threads.

I'd wait until about n=2 million to bother trying 2 threaded operation.

storm5510 2020-03-30 13:26

[QUOTE=VBCurtis;541242]If you run LLR single-threaded at those tiny n-values, you'll get much better production. LLR doesn't multi-thread well when FFT size is smaller than 128K * # of threads.

I'd wait until about n=2 million to bother trying 2 threaded operation.[/QUOTE]

Running three threads on each did not work out very well. Doing so produced enough heat to cause the CPU to throttle back when the temperature went beyond 85°C. My older i5 might benefit by reducing it to one thread per instance.

n < 2-million. In theory, I could run four instances on this i7. However, I will keep it at two, single thread each.

Many thanks! :smile:

storm5510 2020-04-04 13:27

[U]I am going to lump these here as a group[/U]:

[I]k[/I] = 98475, Released.
[I]k[/I] = 22783, Released.

[I]k[/I] = 10019, Active. Testing to >= 1e6.
[I]k[/I] = 317605. Active, Testing to >= 1e6.

I will not be posing anything additional in the forums on this subject. Any updates I have will be in [B]kar_bon's[/B] [I]Wiki[/I] database [U]only[/U]. The active [I]k's[/I] above were taken from there. No reservations on either. There are enough unreserved there with low [I]n[/I] values to last a long time.

VBCurtis 2020-04-04 16:15

[QUOTE=storm5510;541751][U]I am going to lump these here as a group[/U]:

[I]k[/I] = 98475, Released.
[I]k[/I] = 22783, Released.
[/QUOTE]
How far did you test these?

storm5510 2020-04-04 23:22

[QUOTE=VBCurtis;541767]How far did you test these?[/QUOTE]

98475 to [I]n[/I] = 770,000.
22783 to [I]n[/I] = 855,000.

I was frustrated with the progress on a single thread. This was before I started experimenting with multiple instances on multiple machines. I know I did not sieve them deep enough. Probably < 750e9. Everything I sieve now is a single large batch to 15e11. I may go back and pick these up again and take them to [I]n[/I] >= 1e6.

Dylan14 2020-04-06 20:13

update on k's
 
k = 50171 is at n = 2.055 M, no primes found, continuing. Will likely continue beyond 2.5 M, so if yoyo can sieve up a file for me (up to say, n = 10 M), that would be nice.
k = 17849 - I don't have an update here as the machine running this is over at school and I'm not there due to the virus situation.

pepi37 2020-04-06 20:23

[QUOTE=Dylan14;541968]k = 50171 is at n = 2.055 M, no primes found, continuing. Will likely continue beyond 2.5 M, so if yoyo can sieve up a file for me (up to say, n = 10 M), that would be nice.
k = 17849 - I don't have an update here as the machine running this is over at school and I'm not there due to the virus situation.[/QUOTE]

50171 will be sent this weekend 😊

Dylan14 2020-05-07 18:22

update on k’s
 
k = 17849 is at n = 1.524 M, no primes found, continuing...
k = 50171 no change, machine that runs this k is being serviced, so no progress has been made.

storm5510 2020-05-25 00:27

[I]k[/I] = 22783 was tested to [I]n[/I] = 1e6 ending on 2020-04-28.
[I]k[/I] = 98475 is a future project which will also be ran to [I]n[/I] = 1e6, or above.


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