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Search: Posts Made By: diep
Forum: Software 2020-10-12, 15:32
Replies: 22
Views: 2,867
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: 1,612
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: 1,612
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: 35,401
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: 995
Views: 98,684
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: 38,783
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: 38,783
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: 6,313
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: 38,783
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: 38,783
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: 38,783
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: 35,401
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: 35,401
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: 1,952
Views: 174,035
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: 1,952
Views: 174,035
Posted By diep
3x HURRAY!!!

3x HURRAY!!!
Forum: GPU Computing 2020-01-23, 10:36
Replies: 350
Views: 26,565
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: 350
Views: 26,565
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....
Forum: GPU Computing 2020-01-23, 09:46
Replies: 350
Views: 26,565
Posted By diep
Retina - As a GPU manufacturer AMD isn't...

Retina - As a GPU manufacturer AMD isn't publicly showing its future plans. Suddenly DANG there is something - or it isn't.

It's not like the endless drumbeats intel shows prior to producing...
Forum: GPU Computing 2020-01-23, 09:36
Replies: 350
Views: 26,565
Posted By diep
nomead: being EOL would be interesting info as...

nomead: being EOL would be interesting info as some hardware reviewers on websites i spoke didn't pick up that info yet. Note that the 'losing money on each card'- info is also old info from end 2018.
Forum: GPU Computing 2020-01-22, 20:42
Replies: 350
Views: 26,565
Posted By diep
Please note but this is a personal opinion on...

Please note but this is a personal opinion on gpu's is that if a chip clocks higher than 1 Ghz the manufacturer is doing something wrong. Because if it can clock like 1.5Ghz or whatever above 1 Ghz -...
Forum: GPU Computing 2020-01-22, 20:17
Replies: 350
Views: 26,565
Posted By diep
Thanks for clearing that up kriesel. Phil :...

Thanks for clearing that up kriesel.

Phil : yes as it seems they used the very much best gpu's they had produced from which we know they can pump out 6.7 Tflops double precision - as they had...
Forum: GPU Computing 2020-01-21, 23:35
Replies: 350
Views: 26,565
Posted By diep
How would i know of course, but those first 5000...

How would i know of course, but those first 5000 cards sold they should overclock wonderfully well.

Let's use logics in a normal real world manner here.

What's a 6.7 tflops Tesla selling for...
Forum: GPU Computing 2020-01-21, 15:58
Replies: 350
Views: 26,565
Posted By diep
Ignore all those boosts if you do gpgpu 24/24....

Ignore all those boosts if you do gpgpu 24/24. Even If you do gpgpu watercooled, which is much better than aircooled, you don't want to boost of course as you're going to be far above that 300 watt...
Forum: GPU Computing 2020-01-21, 12:25
Replies: 350
Views: 26,565
Posted By diep
As you can see here: ...

As you can see here:

https://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units#Radeon_VII_series

the mi50 gets listed as 6.6 Tflops double precision and the radeon VII gets listed as...
Forum: GPU Computing 2020-01-21, 12:14
Replies: 350
Views: 26,565
Posted By diep
Here is the article: ...

Here is the article:

https://www.tweaktown.com/news/64501/amd-radeon-vii-less-5000-available-custom-cards/index.html
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