Topple 0.5.0

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konsolas
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Topple 0.5.0

Post by konsolas » Tue Apr 02, 2019 7:38 pm

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.

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CMCanavessi
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Re: Topple 0.5.0

Post by CMCanavessi » Wed Apr 03, 2019 1:44 am

Awesome news and great improvement!
Follow my tournament and some Leela gauntlets live at http://twitch.tv/ccls

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Graham Banks
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Re: Topple 0.5.0

Post by Graham Banks » Wed Apr 03, 2019 2:22 am

CMCanavessi wrote:
Wed Apr 03, 2019 1:44 am
Awesome news and great improvement!
+1
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

konsolas
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Re: Topple 0.5.0

Post by konsolas » Tue May 14, 2019 2:10 pm

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

Wolfgang
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Re: Topple 0.5.0

Post by Wolfgang » 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 ;)
Best
Wolfgang
CEGT-Team

konsolas
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Re: Topple 0.5.0

Post by konsolas » Wed May 15, 2019 9:09 pm

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.

Wolfgang
Posts: 322
Joined: Fri May 12, 2006 11:08 pm

Re: Topple 0.5.0

Post by Wolfgang » Thu May 16, 2019 10:03 am

Thanks! :)
Best
Wolfgang
CEGT-Team

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