Page 1 of 1

Topple 0.5.0

Posted: Tue Apr 02, 2019 7:38 pm
by konsolas
I've finally got a new release together, this time with what is hopefully a significant strength increase (+100 elo?)

Changelog and binaries can be found on the GitHub page: https://github.com/konsolas/ToppleChess ... tag/v0.5.0

I've decided to ditch Lazy SMP and instead use YBWC, as it seems to behave much more predictably, despite the consensus that Lazy SMP is generally stronger. Unfortunately, I haven't been able to test the strength gains (or losses) with SMP yet.

Re: Topple 0.5.0

Posted: Wed Apr 03, 2019 1:44 am
by CMCanavessi
Awesome news and great improvement!

Re: Topple 0.5.0

Posted: Wed Apr 03, 2019 2:22 am
by Graham Banks
CMCanavessi wrote:
Wed Apr 03, 2019 1:44 am
Awesome news and great improvement!
+1

Re: Topple 0.5.0

Posted: Tue May 14, 2019 2:10 pm
by konsolas
Update on the above:

Despite my belief in YBWC, it appears to simply not be as strong as Lazy SMP. On CCRL 40/4, Topple 0.5.0 (YBWC with PV splitting) is only 16 elo stronger given 4 threads to work with. So I've just written the most basic possible implementation of Lazy SMP (no skipping depths, no move reordering, no changed aspiration windows) for Topple 0.6.0, and the improvement is huge (+120 elo in self play)

The release can be found here: https://github.com/konsolas/ToppleChess ... tag/v0.6.0

Re: Topple 0.5.0

Posted: Wed May 15, 2019 8:40 pm
by Wolfgang
Hi,

thanks for the new version!
Can you tell which of these many versions runs fine on AMD-CPUs like AMD-FX 8350?

Thanks ;)

Re: Topple 0.5.0

Posted: Wed May 15, 2019 9:09 pm
by konsolas
Wolfgang wrote:
Wed May 15, 2019 8:40 pm
Hi,

thanks for the new version!
Can you tell which of these many versions runs fine on AMD-CPUs like AMD-FX 8350?

Thanks ;)
The bdver4 compile should be optimised for older AMD CPUs.

Re: Topple 0.5.0

Posted: Thu May 16, 2019 10:03 am
by Wolfgang
Thanks! :)