Posts by Matt Kowal
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1) Message boards : Science : There will be soon a new subproject attacking an collatz issue integrated in yoyo@home (Message 24298)
Posted 120 days ago by Matt Kowal
After less than one and a half months (14 August to 23 September), we were able to successfully complete our search project:

We have found all the smaller path records (http://ericr.nl/wondrous/pathrecs.html) as well as all starting numbers <260, whose maximum > 2 * 1016 * starting number (only such numbers are given as candidates) which were found by other persons (mainly Tomas Olivera e Silva and Eric Roosendaal); and thus validate our approach in the opposite direction.
We have found 4 new path records and have been able to prove that all starting numbers <87 * 260 (in particular also all <1020) land at 1 and pass into the trivial cycle.
Thus, we have also shown that a non-trivial cycle must consist of more than 17 billion sequence members
2) Message boards : Science : There will be soon a new subproject attacking an collatz issue integrated in yoyo@home (Message 24199)
Posted 157 days ago by Matt Kowal
Very nice. Are there Windows or OS X versions planned?


A Windows application is now available: http://www.rechenkraft.net/yoyo/apps.php
3) Message boards : Science : There will be soon a new subproject attacking an collatz issue integrated in yoyo@home (Message 24185)
Posted 160 days ago by Matt Kowal
The application for Nontrivial Collatz Cycle is now available for 64 bit Linux @x86 and @ARM.

Nontrivial Collatz Cycle wants to prove that there are no Collatz Cycles with length < 17*109 other than 1 - 4 - 2. Therefore it searches for Path Records with start numbers up tp 1021.
4) Message boards : Science : There will be soon a new subproject attacking an collatz issue integrated in yoyo@home (Message 24184)
Posted 161 days ago by Matt Kowal
You have to enable this project in your settings and allow test applications. Linux 64 bit will be the first version.
http://www.rechenkraft.net/yoyo/all_news.php
5) Message boards : Web site : Signature image not displaying (Message 24128)
Posted 189 days ago by Matt Kowal
When directly viewing the image it displayed correctly. However, when viewed in the message board as part of a thread the signature does not display.

Image in question: https://signature.statseb.fr/sig-1584.png

Is the issue my configuration or the forum?
6) Message boards : Number crunching : AMD VEGA FE (Message 24126)
Posted 189 days ago by Matt Kowal
Do you thing it would have the right power to crunch on Collatz, Milkyway or Einstein?


What do you mean by the "right power"?

Will it be able to run those projects? Absolutely.

Performance and power efficiency are another story. I imagine we'll see some project specific benchmarks in the near future.
7) Message boards : Number crunching : Available applications (Message 24038)
Posted 231 days ago by Matt Kowal
I believe that while the apps are different they serve the same purpose. Either the micro collatz or the collatz sieve can find a number that disproves the conjecture. The primary difference is that the micro app processes much smaller work units and as a result is only offered to devices with very low processing power.
8) Message boards : Science : Collatz Conjecture in Color - Numberphile (video - 6m 17sec) (Message 23934)
Posted 299 days ago by Matt Kowal
Collatz Conjecture in Color : https://www.youtube.com/watch?v=LqKpkdRRLZw
9) Message boards : Cafe : The Last One to Post Wins! -- Version 26 (Message 23894)
Posted 332 days ago by Matt Kowal
Inter-species relationships can be quite humbling.
10) Message boards : Number crunching : Optimizing Collatz Sieve (Message 23564)
Posted 406 days ago by Matt Kowal
Thank you for sharing, Grigory. Impressive output.
11) Message boards : Cafe : The Last One to Post Wins! -- Version 26 (Message 23520)
Posted 412 days ago by Matt Kowal
I'm a driver, I'm a winner
Things are gonna change, I can feel it
12) Message boards : Number crunching : Help! Validation STILL Pending?? (Message 23173)
Posted 448 days ago by Matt Kowal
Odd... My results pending validation has dramatically increased in the past 24 hours... https://boinc.thesonntags.com/collatz/results.php?userid=51390&offset=0&show_names=0&state=2&appid=
13) Message boards : Number crunching : Help! Validation STILL Pending?? (Message 23162)
Posted 450 days ago by Matt Kowal
I noticed that I also have a workunit that is still pending validation : http://boinc.thesonntags.com/collatz/workunit.php?wuid=99578670
14) Message boards : Cafe : The Last One to Post Wins! -- Version 24 (Message 23080)
Posted 468 days ago by Matt Kowal
Fire up the band!
15) Message boards : Number crunching : same old??? (Message 22975)
Posted 494 days ago by Matt Kowal
I would suggest going to the Nvidia website and downloading + installing the latest drivers.
16) Message boards : Science : Numperphile video - UNCRACKABLE? The Collatz Conjecture (Message 22831)
Posted 529 days ago by Matt Kowal
https://www.youtube.com/watch?v=5mFpVDpKX70

Additional footage : https://www.youtube.com/watch?v=O2_h3z1YgEU
17) Message boards : Number crunching : WTF ?!? (Message 22579)
Posted 585 days ago by Matt Kowal
I'm not positive, but I think it is related. I suspect insecure connections will no longer be able to receive work.

That said, the web is moving towards SSL - I think it is in the best interest of this project (and all sites) to move towards securing client-server communication.

As an example Apple will require HTTPS connections for iOS apps by the end of 2016... https://techcrunch.com/2016/06/14/apple-will-require-https-connections-for-ios-apps-by-the-end-of-2016/
18) Message boards : Number crunching : WTF ?!? (Message 22577)
Posted 585 days ago by Matt Kowal
Detaching from a project removes the entire project folder and since Collatz offers more nuance optimization options the consequences of detaching/reattaching should have been better communicated. We live and learn. Hopefully you can quickly find some optimizations in optimizing collatz sieve thread : http://boinc.thesonntags.com/collatz/forum_thread.php?id=1273

I had previously posted my config to that thread, so I simply copied it back to the project folder.
19) Message boards : Science : Message from Boinc: This project is using an old URL (Message 22539)
Posted 594 days ago by Matt Kowal
Since it will never be "convenient" what is the impact if I never replace the project?


If the admin, Slicker, continues through with this change then I would imagine you would eventually not receive any more work from the project.

All projects require updates at one time or another and this is a rather simple one at that. Even if a user were to simple abort all the current workunits then detach + reattach the project there would be no ill effects to the project or user status.
20) Message boards : Cafe : The Last One to Post Wins! XXII (Message 22518)
Posted 598 days ago by Matt Kowal
Happy weekend, ya'll!

Positive vibes all the way down.


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