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Search: Posts Made By: diep
Forum: Software 2020-11-24, 01:19
Replies: 35
Views: 4,586
Posted By diep
Ah yes -c much better than the mask as easier to...

Ah yes -c much better than the mask as easier to read.
Forum: Software 2020-11-24, 01:14
Replies: 35
Views: 4,586
Posted By diep
Now that is interesting! That solves the...

Now that is interesting!

That solves the problem right away!!

<PRE>
nohup taskset -c 0x00000003f /home/diep/89/sllr64 &
</PRE>
And then hope it works :)
Forum: Software 2020-11-23, 15:29
Replies: 35
Views: 4,586
Posted By diep
Good Morning! On a NUMA system i notice a...

Good Morning!

On a NUMA system i notice a huge performance issue with LLR.

let's first explain the simple problem.

Probably we all know what numa systems are. memory at other sockets (or...
Forum: Riesel Prime Search 2020-11-21, 19:40
Replies: 92
Views: 21,257
Posted By diep
Note some of the shortened sieve files seem to...

Note some of the shortened sieve files seem to not work for download.
Forum: Probability & Probabilistic Number Theory 2020-11-21, 17:14
Replies: 0
Views: 121
Posted By diep
Sieving success as a heuristic for odds of a prime

I'm busy sieving 32767 * 2 ^ n - 1 very deeply now (and busy testing it at the first few millions of bits or so - each time narrowing down the boundaries of the sieve domain).

Well deeply -that's...
Forum: Riesel Prime Search 2020-11-21, 15:08
Replies: 63
Views: 13,609
Posted By diep
finished thanks to big work of Paul until 7M. I'm...

finished thanks to big work of Paul until 7M. I'm still having a few cores above 7M.

If someone wants to take over let me know. For my current (outdated) hardware i'm at the limits of what is...
Forum: Riesel Prime Search 2020-11-21, 15:02
Replies: 999
Views: 104,799
Posted By diep
Too bad you didn't find anything k=89 * 2^n - 1...

Too bad you didn't find anything k=89 * 2^n - 1 until 4M.

Taking over k=89 then. will search it then from 4M to 6M (or maybe 7M) and then release it again probably will let you know when i release...
Forum: Software 2020-11-05, 23:35
Replies: 35
Views: 4,586
Posted By diep
Which LLR version is adviced to run on old AMD...

Which LLR version is adviced to run on old AMD magny cours processors?

Have 48 core box operational with magny cours 2.2ghz processors.
Very happy about it.

LLR gives CPU fault.

That would...
Forum: Software 2020-10-12, 15:32
Replies: 35
Views: 4,586
Posted By diep
Seems scale better the 3.8.24b2 but it's a lot...

Seems scale better the 3.8.24b2 but it's a lot slower on my machine here.

I tried under linux 64 bits at dual socket Xeon L5420 machine at 4 threads the new version 3.8.24b2
...
Forum: Programming 2020-07-22, 15:22
Replies: 14
Views: 2,437
Posted By diep
i wrote that mul_limbs code like 15 years ago. ...

i wrote that mul_limbs code like 15 years ago. maybe GCC got a lot more clever lately :)

Back then you can bet i cried it out loud like a wounded Bear that GCC was duckslow optimizing it back...
Forum: Programming 2020-07-22, 06:30
Replies: 14
Views: 2,437
Posted By diep
64x64 integer multiplication GCC

Good Morning!

Looking for way of multiplying fast in GCC 64x 64 bits unsigned 64 bits integers and obtaining both highres as well as lowres result.

Was busy reviving CUDA sieving code i wrote...
Forum: Wagstaff PRP Search 2020-07-13, 21:01
Replies: 190
Views: 37,783
Posted By diep
Why not take 16.4M to 164M as then at least you...

Why not take 16.4M to 164M as then at least you got some sort of decent odds to find at least 1.

The odds of a PRP in Wagstaff between [n;2n] seems diverging - not converging - and if i may...
Forum: Riesel Prime Search 2020-03-10, 14:34
Replies: 999
Views: 104,799
Posted By diep
Yes for k=69 testing the min and max wouldbe...

Yes for k=69 testing the min and max wouldbe 6.17M and 7.03M at the moment, yet that max quickly gets larger as 7.0M+ just started running.

As it's load balanced to give each n batches roughly the...
Forum: Riesel Prime Search 2020-02-28, 20:07
Replies: 441
Views: 41,169
Posted By diep
If you have nashtables calculated that would be...

If you have nashtables calculated that would be nice to see as i want to pickout a few low weight k's (not too low weight) and sieve those deep.

I wrote that gpgpu code myself in CUDA in 2016 - ...
Forum: Riesel Prime Search 2020-02-28, 12:42
Replies: 441
Views: 41,169
Posted By diep
Note sure how far PG has sieved there. You care...

Note sure how far PG has sieved there. You care about this?

Myself i had reserved here k=32767

Will find a few more at later time. Much larger than this. Hopefully not too much time from now. ...
Forum: Riesel Prime Search 2020-02-27, 18:12
Replies: 50
Views: 7,906
Posted By diep
I don't think whether the question is interesting...

I don't think whether the question is interesting whether 'some software' could calculate all this. The real question is: "how fast would such software be?"

That's why most try small k's for...
Forum: Riesel Prime Search 2020-02-27, 14:17
Replies: 441
Views: 41,169
Posted By diep
Here is that splitup program. Works both in linux...

Here is that splitup program. Works both in linux where i use it as well as windows where i use it too. After you compiled it of course.
Forum: Riesel Prime Search 2020-02-27, 14:15
Replies: 441
Views: 41,169
Posted By diep
Faster for you might be cllr64 i wrote a small...

Faster for you might be cllr64
i wrote a small C program to splitup sieve files converted from ABCD files into something which then writes newpgen format.

It loadbalances the sieve files.
...
Forum: Riesel Prime Search 2020-02-27, 13:55
Replies: 441
Views: 41,169
Posted By diep
I tried search exponent=733 some years ago until...

I tried search exponent=733 some years ago until 4M.

If you interested you can reserve that one and continue there. If you so lucky you'll have a prime very quickly.

edit: did not finish...
Forum: Wagstaff PRP Search 2020-02-23, 13:52
Replies: 190
Views: 37,783
Posted By diep
Thanks for your fanatism Lalera - but why do you...

Thanks for your fanatism Lalera - but why do you already checked range by Propper? You want to double check?

Why not factor exponent+1 and then the factorisation exponent+1 giving for example the...
Forum: Wagstaff PRP Search 2020-02-23, 13:48
Replies: 190
Views: 37,783
Posted By diep
How about composite-27 type residue?

How about composite-27 type residue?
Forum: Riesel Prime Search 2020-02-06, 09:54
Replies: 1,955
Views: 179,244
Posted By diep
If there is 1+ closeby we'll have it soon as...

If there is 1+ closeby we'll have it soon as well.

69 seems very unpredictable now because of the huge gap, yet odds are they group a little together.
Forum: Riesel Prime Search 2020-02-06, 08:02
Replies: 1,955
Views: 179,244
Posted By diep
3x HURRAY!!!

3x HURRAY!!!
Forum: GPU Computing 2020-01-23, 10:36
Replies: 353
Views: 31,301
Posted By diep
That's not an official AMD statement. ...

That's not an official AMD statement.

That's only saying odds are there in this case they do not manage to get yields up or the gpu will live on in a different incarnation (mi50?) .

It's...
Forum: GPU Computing 2020-01-23, 10:28
Replies: 353
Views: 31,301
Posted By diep
Well a gpu is always a loss until they manage to...

Well a gpu is always a loss until they manage to get the yields up of it.

The yields any manufacturer manages to make at a relative new process technology is more secret than any military secret....
Showing results 1 to 25 of 686

 
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