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Search: Posts Made By: Sergei Chernykh
Forum: Aliquot Sequences 2018-01-20, 19:43
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
Unfortunately no, not this year. The project just...

Unfortunately no, not this year. The project just had a bunch of short-running tasks, but it's processed already. More realistic estimate for the search up to 10^20 completion would be summer or...
Forum: Aliquot Sequences 2017-09-04, 05:22
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
There are ~1000 computers running, ~300 of them...

There are ~1000 computers running, ~300 of them run GPU version, but they contribute ~65% of total computing power.
Forum: Aliquot Sequences 2017-08-22, 09:03
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
It will take at least 4 years: you can check...

It will take at least 4 years: you can check progress here (https://sech.me/boinc/Amicable/server_status.php)
Forum: Aliquot Sequences 2017-08-16, 07:29
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
The search is complete...

The search is complete (https://sech.me/boinc/Amicable/forum_thread.php?id=91)! It took 7 months and 250-300 computers running on average.

- There are 2,390,655 amicable pairs with smaller member...
Forum: Aliquot Sequences 2017-06-29, 09:49
Replies: 124
Views: 16,100
Posted By Sergei Chernykh
The record has been beaten: it's 56250 digits...

The record has been beaten: it's 56250 digits (https://sech.me/ap/log/2017/2017-06-28/JOBLING.txt) for the largest known amicable pair now!
Forum: Aliquot Sequences 2017-02-28, 06:45
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
I need these restrictions for faster turnaround...

I need these restrictions for faster turnaround of tasks. I regret I didn't have GPU restriction before. Some people took more GPU tasks than they can possibly do in 3 days even if they had 4 GTX...
Forum: Aliquot Sequences 2017-02-28, 06:30
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
And this is considered normal strategy? I'll not...

And this is considered normal strategy? I'll not touch WUs which were already sent, but I've restricted the number of WUs in progress even more: 1 WU per CPU core + 10 WUs per GPU. I don't want it to...
Forum: Aliquot Sequences 2017-02-28, 06:19
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
Well, that's cheating in my opinion. I'll set...

Well, that's cheating in my opinion. I'll set expire time for all that tasks to now, so someone else, more honest, will receive credits for them.
Forum: Aliquot Sequences 2017-02-28, 05:53
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
People are doing what? P.S. I've noticed a...

People are doing what?

P.S. I've noticed a huge increase in "tasks in progress" and limited it to 10 tasks per GPU yesterday. People are doing tasks but not submitting results. Is this what called...
Forum: Aliquot Sequences 2017-01-30, 09:35
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
The project is now open for everyone, invite code...

The project is now open for everyone, invite code is not required.
Forum: Aliquot Sequences 2017-01-24, 11:08
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
Sure. I have this in nginx's server block: ...

Sure. I have this in nginx's server block:
location /boinc {
autoindex off;
}

location /boinc/Amicable/ {
index index.php;
...
Forum: Aliquot Sequences 2017-01-24, 10:42
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
If only I remembered all issues I had... Nothing...

If only I remembered all issues I had... Nothing difficult, rather a lot of small issues. For example, when I first compiled BOINC server/libs/tools, it didn't give me any (clearly visible) errors,...
Forum: Aliquot Sequences 2017-01-23, 18:20
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
I think it was Free-DC Stats owner himself - he's...

I think it was Free-DC Stats owner himself - he's already registered in the project :)
Forum: Aliquot Sequences 2017-01-23, 17:57
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
The project has been running smooth so far. I've...

The project has been running smooth so far. I've only seen some minor errors in logs and already fixed them. So ETA for public launch is still February 1st. It would be fine if you share it...
Forum: Aliquot Sequences 2017-01-22, 22:35
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
Yes, it's the text file then which is blocked....

Yes, it's the text file then which is blocked. The problem with dynamic html etc. is that the other files are huge. For example, 100+ digit files are several gigabytes in size. So downloading is the...
Forum: Aliquot Sequences 2017-01-22, 22:26
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
The pop-up shows download progress. The link you...

The pop-up shows download progress. The link you clicked is to download all 4-digit amicable pairs in one text file.
Forum: Aliquot Sequences 2017-01-22, 21:45
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
Thank you! Note that the project has just...

Thank you! Note that the project has just started, so it's not on boincstats.com and other stats sites yet and BOINC teams are not imported yet.
Forum: Aliquot Sequences 2017-01-22, 20:25
Replies: 37
Views: 7,495
Posted By Sergei Chernykh
Search for all amicable pairs up to 2^64

I've started a project to extend the exhaustive search limit from 1018 to 264 (~1.845*1019), and also to verify all amicable pairs below 1018. There are ~500,000 amicable pairs still to be found in...
Forum: Aliquot Sequences 2016-11-26, 16:32
Replies: 25
Views: 4,331
Posted By Sergei Chernykh
The code is not a secret - look at...

The code is not a secret - look at Factorize.h/cpp at my github (https://github.com/SChernykh/Amicable). The version there is a bit slower than my latest code used in my BDE solver. It also has a lot...
Forum: Aliquot Sequences 2016-11-25, 14:40
Replies: 25
Views: 4,331
Posted By Sergei Chernykh
My factorization code uses exactly this...

My factorization code uses exactly this combination: trial division up to fourth root of N and then 1 or 2 Pollard-Brent calls to get the remaining factors. I've just run a quick test on numbers...
Forum: Aliquot Sequences 2016-10-10, 07:29
Replies: 457
Views: 28,767
Posted By Sergei Chernykh
What's the size of your files? drive.google.com...

What's the size of your files? drive.google.com offers 15 GB of free space for example.
Forum: Aliquot Sequences 2016-09-14, 08:34
Replies: 2,903
Views: 164,893
Posted By Sergei Chernykh
The problem with https links to rechenkraft is...

The problem with https links to rechenkraft is this (according to Chrome debugger):

So you just need to make the link to MathJax.js use https.
Forum: Aliquot Sequences 2016-09-05, 11:28
Replies: 124
Views: 16,100
Posted By Sergei Chernykh
I've attached the list of isotopic relations...

I've attached the list of isotopic relations together with PHP script I use to submit isotopic pairs.

P.S. I've messed up file permissions on the server today, so I had to manually restore your...
Forum: Aliquot Sequences 2016-09-02, 13:19
Replies: 124
Views: 16,100
Posted By Sergei Chernykh
I've run a filter on the entire amicable database...

I've run a filter on the entire amicable database to find pairs which were not generated by Borho/te Riele/Wiethaus rules, i.e. pairs which are not type (3+,2). There are just a bit more than 2...
Forum: Aliquot Sequences 2016-08-16, 12:32
Replies: 124
Views: 16,100
Posted By Sergei Chernykh
I've optimized my program even further...

I've optimized my program even further (https://github.com/SChernykh/Amicable/commits/master), plus I used a trick from David Einstein to skip many large prime factors:

- Find all pairs of the...
Showing results 1 to 25 of 83

 
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