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Search: Posts Made By: hansl
Forum: PrimeNet 2020-03-20, 04:00
Replies: 65
Views: 7,337
Posted By hansl
I figured I'd check my results page on...

I figured I'd check my results page on mersenne.org, sorted by GHzDays to see how many 0's there were.

Turns out 11 other results of mine were poached in the past couple weeks by Niels.
...
Forum: PrimeNet 2020-03-20, 03:26
Replies: 65
Views: 7,337
Posted By hansl
Hi, I just noticed another poached work unit from...

Hi, I just noticed another poached work unit from a couple days ago by Niels_Mache_Nextcloud

PROCESSING RESULT: NO FACTOR FOR M101603891 FROM 2^73 TO 2^74 [MFAKTC 0.21 BARRETT76_MUL32_GS]
ERROR...
Forum: Software 2020-03-17, 21:13
Replies: 602
Views: 91,745
Posted By hansl
Hi, I wanted to test out some different work...

Hi, I wanted to test out some different work configurations recently, and in doing so managed to mess up my settings quite a bit. Looking for any advice to get things running properly again, or how...
Forum: Computer Science & Computational Number Theory 2020-03-06, 16:24
Replies: 0
Views: 1,106
Posted By hansl
An alternative, streaming, recursive, machine-number representation

I started thinking about an alternative way to represent large whole numbers (Fermat numbers in particular, which can be extremely large but have only a couple bits set), and one approach would be to...
Forum: PARI/GP 2020-03-06, 06:52
Replies: 7
Views: 1,221
Posted By hansl
I was just revisiting this old problem, and while...

I was just revisiting this old problem, and while I'm not sure if this is what you meant, I had interpreted this as meaning nested vectors like "[2, [3, [5, [7,...] ] ] ]"

And so I started writing...
Forum: Marin's Mersenne-aries 2019-11-05, 17:51
Replies: 12
Views: 3,788
Posted By hansl
Just a small clarification 1G-10G has definitely...

Just a small clarification 1G-10G has definitely been done to 2^56.
I also recently did 3G-10G to 2^57, but I temporarily stopped in the middle of processing 1G-3G to 2^57. So parts of that...
Forum: Hardware 2019-10-26, 18:02
Replies: 4
Views: 2,057
Posted By hansl
Here's an interesting talk about lowering energy...

Here's an interesting talk about lowering energy requirements for highly parallelizable tasks on RISC-V. Again they are targeting AI applications(low precision) but still some neat points about...
Forum: Lounge 2019-10-17, 23:20
Replies: 1
Views: 363
Posted By hansl
Check out this video of making a foil ball from...

Check out this video of making a foil ball from pure gold:

bt2BDCwu18U
Forum: Computer Science & Computational Number Theory 2019-10-16, 20:36
Replies: 6
Views: 1,609
Posted By hansl
Thanks for the reply. I am still interested to...

Thanks for the reply. I am still interested to learn more about the algorithm, but unfortunately despite my very German name, I am not fluent in German. Is there by any chance an English...
Forum: Hardware 2019-10-15, 20:56
Replies: 8
Views: 1,000
Posted By hansl
If you want to be extra cautious, you can see if...

If you want to be extra cautious, you can see if your motherboard manufacturer provides a QVL (Qualified Vendor List) for which RAM modules are compatible with your specific mobo model.
Although...
Forum: Information & Answers 2019-10-15, 20:48
Replies: 8
Views: 785
Posted By hansl
mmkstarr, you might be interested in learning...

mmkstarr, you might be interested in learning PARI/GP (https://pari.math.u-bordeaux.fr/), its a very fast general calculator/scripting language and good with large integers. It uses GMP internally....
Forum: Teams 2019-10-15, 17:36
Replies: 10
Views: 5,035
Posted By hansl
Hadn't joined a team yet so I decided to pitch...

Hadn't joined a team yet so I decided to pitch in.

I guess the credits earned before joining a team are not retro-actively applied?
Forum: Hardware 2019-10-15, 17:28
Replies: 8
Views: 1,000
Posted By hansl
That CPU has a max 2 memory channels, so I don't...

That CPU has a max 2 memory channels, so I don't think you would benefit from 4 sticks in terms of bandwidth.
Forum: Hardware 2019-10-13, 20:39
Replies: 25
Views: 2,941
Posted By hansl
By the way, regarding temp issues, I've used a...

By the way, regarding temp issues, I've used a small passive heatsink designed for GPU RAM, which I happened to have some spares of. I affixed it with some double sided tape designed for heatsinks,...
Forum: GPU Computing 2019-10-12, 08:26
Replies: 12
Views: 3,887
Posted By hansl
But there are some Mersenne numbers slightly...

But there are some Mersenne numbers slightly larger than that, which have *some* known factors, such that after dividing their known factors, the leftover would be less than 1018 bits.


The...
Forum: Hardware 2019-10-11, 03:03
Replies: 25
Views: 2,941
Posted By hansl
I haven't heard of that one, but I recently got a...

I haven't heard of that one, but I recently got a Pi 4 and tried out Manjaro Linux for ARM, which is 100% 64-bit and seems pretty decent so far. They only support Pi 4 though.

There is a desktop...
Forum: Lounge 2019-09-22, 15:10
Replies: 51
Views: 3,649
Posted By hansl
For a given bound there is a certain probability...

For a given bound there is a certain probability that doing X number of curves will find a factor of Y digits or less. After you do so many curves, its not worth it to keep doing that same bound,...
Forum: Programming 2019-09-21, 01:50
Replies: 23
Views: 5,260
Posted By hansl
I did some more timing of the various "parallel"...

I did some more timing of the various "parallel" computation functions I wrote, and found that x1, x3, and x4 are basically all the same performance.

Only x2 seems to benefit with a ~16%...
Forum: Lounge 2019-09-20, 18:00
Replies: 51
Views: 3,649
Posted By hansl
k=90 is nothing... even several hundred is...

k=90 is nothing... even several hundred is nothing

log2(2*90*1277+1) ~= 17.81 bit depth that you just TF'd to. Its not surprising that it takes 0 time.

1277 has been TF'd up to 2^67 so far...
Forum: Programming 2019-09-20, 16:50
Replies: 23
Views: 5,260
Posted By hansl
OK, thanks for the explanation, I understand...

OK, thanks for the explanation, I understand better now.

I made a new version of my MULSHR128 routine (128x128, keeping the top 128b result), which should be more correct(and i think marginally...
Forum: Math 2019-09-16, 13:44
Replies: 127
Views: 17,172
Posted By hansl
Wow, thanks for the detailed feedback. ...

Wow, thanks for the detailed feedback.

Yeah, I got my sieve to "work" with the classes code, and found that due to the unanticipated overhead of finding the first bit to clear, its fastest at...
Forum: Programming 2019-09-15, 21:30
Replies: 2
Views: 1,828
Posted By hansl
Looks like 90% or so of those files are some form...

Looks like 90% or so of those files are some form of CSV. IF you want to use python, there's a csv api in the standard library https://docs.python.org/2.7/library/csv.html

I think I saw one that...
Forum: Miscellaneous Math 2019-09-14, 15:49
Replies: 6
Views: 395
Posted By hansl
Also, more generally, bn-1 for any base b will...

Also, more generally, bn-1 for any base b will give you n digits each being (b-1) when represented in that base.

ex: 10^5-1 = 99999 in base 10 etc.
Forum: Miscellaneous Math 2019-09-14, 13:38
Replies: 6
Views: 395
Posted By hansl
Much like how in decimal: 10n is a 1 digit follow...

Much like how in decimal: 10n is a 1 digit follow by "n" 0-digits,
2n in binary is just a 1 followed by a bunch of zeroes.

So subtracting one borrows the most significant digit, and for binary,...
Forum: Math 2019-09-14, 06:35
Replies: 127
Views: 17,172
Posted By hansl
Well, yeah its only a few KB when you are doing...

Well, yeah its only a few KB when you are doing mod 60, or 420, but as you add more factors to this modulus, it needs eulerphi(m)^2 space to store every rotated vector. Growing by the square of each...
Showing results 1 to 25 of 205

 
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