Website engines

Discussion of anything and everything relating to chess playing software and machines.

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op12no2
Posts: 489
Joined: Tue Feb 04, 2014 12:25 pm
Full name: Colin Jenkins

Re: Website engines

Post by op12no2 »

Guenther wrote: Mon Dec 21, 2020 3:23 pm
Thanks Colin. I have now exchanged the links for the lozza-ui.
Many thanks.
op12no2
Posts: 489
Joined: Tue Feb 04, 2014 12:25 pm
Full name: Colin Jenkins

Re: Website engines

Post by op12no2 »

Guenther wrote: Sat Dec 19, 2020 6:20 pm BTW will there be any speed difference or other advantages using a newer Node?
I just realized I never tried to update Node for at least five years.
Hi Guenther,

Apologies, I must have been drinking when I replied to this before. Yes the Google V8 Javascript engine that node.js is built around - and which Lozza runs in - improves all the time. The latest V8 version is v8.7 but it'll take a while to get into node I guess. The V8 engine in my fairly recent node is v8.4 (node version 14.15.3).

Use this command to find out:-

node -p process.versions.v8

So yes, well worth an upgrade :)

Thanks for what you do...
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Guenther
Posts: 4605
Joined: Wed Oct 01, 2008 6:33 am
Location: Regensburg, Germany
Full name: Guenther Simon

Re: Website engines

Post by Guenther »

op12no2 wrote: Fri Jan 08, 2021 10:20 pm
Guenther wrote: Sat Dec 19, 2020 6:20 pm BTW will there be any speed difference or other advantages using a newer Node?
I just realized I never tried to update Node for at least five years.
Hi Guenther,

Apologies, I must have been drinking when I replied to this before. Yes the Google V8 Javascript engine that node.js is built around - and which Lozza runs in - improves all the time. The latest V8 version is v8.7 but it'll take a while to get into node I guess. The V8 engine in my fairly recent node is v8.4 (node version 14.15.3).

Use this command to find out:-

node -p process.versions.v8

So yes, well worth an upgrade :)

Thanks for what you do...
:)

I can confirm that replacing my old version of Node (5.0.0.0) against the one I am using now with WukongJS (11.0.0.0)
gives a speedup of 401 kn/s vs. 352 kn/s ~ +14% => this was with lozza 1.18 from the startpos after around 150s

Meanwhile I also checked that the last available version for WIN7 would be 13.6.0.0, may be I try that one too later.
https://rwbc-chess.de

trollwatch:
Chessqueen + chessica + AlexChess + Eduard + Sylwy
op12no2
Posts: 489
Joined: Tue Feb 04, 2014 12:25 pm
Full name: Colin Jenkins

Re: Website engines

Post by op12no2 »

Guenther wrote: Sat Jan 09, 2021 11:31 am I can confirm that replacing my old version of Node (5.0.0.0) against the one I am using now with WukongJS (11.0.0.0)
gives a speedup of 401 kn/s vs. 352 kn/s ~ +14% => this was with lozza 1.18 from the startpos after around 150s
Awesome :)

I sat watching Lozza do a soak test yesterday in Cutechess GUI getting to depth of between 8 and 20+ at 50ms/move; the google V8 Javascript engine is very impressive.

Thanks again.