GopherCheck 0.2.0 released

[stephenjlovell]

Hello All,

I've recently released a new version of my engine, GopherCheck (v0.2.0).

Binaries for Mac, Windows, and Linux are now available on GitHub.

• Implements memory recycling on a per-goroutine basis to reduce memory allocations and GC pressure.
  Speed improvement of approx. 18% in nodes per second (NPS) over v0.1.1.
  New UCI option to set number of search threads, defaulting to one search process (goroutine) per logical core.
  Expanded time control options:
  • per-game
    per-game plus time increment
    fixed-depth
    fixed time per move
  Minor bug-fixes and optimizations

The source code and Readme can also be found on GitHub.

My best guess for engine strength is somewhere in the range of 2300-2500 ELO, but I don't have rigorous data yet.

[Graham Banks]

Looking forward to trying it out.

[SzG]

Download is unsuccessful for me.

[SzG]

GopherCheck uses 50% CPU on my 4-core i5 even if cores are set to 1.

[SzG]

GopherCheck uses 50% CPU on my 4-core i5 even if cores are set to 1.

Must be a communication error between the GUI and the program. UNder Arena all is well.
Under Shredder the number of CPU's option does not show up. In fact no engine option window pops up.

[thunderstruck]

I think there's an error in the source code that prevents the CPU option to display in some GUIS.
I compiled GopherCheck for Linux and I couldn't see the CPU option in Cutechess GUI.
The error is in file uci.go at line 258 : uci.Send(fmt.Sprintf("option name CPU type spin default 0 min 1 max %d\n", runtime.NumCPU()))
I changed the default from 0 to 1 and then the CPU option showed up in the GUI.
The default value 0 isn't between 1 and the maximum of cores(4 in my case) and therefore ignored by the GUI.

[stephenjlovell]

Thanks Antonio and Gabor. Will patch and post an updated release. It'll appear on the Releases page as 0.2.1:

https://github.com/stephenjlovell/gopher_check/releases

[stephenjlovell]

I've released an update (v0.2.1) that gets rid of the "0" default issue for CPU count. It's now available on the releases page.

[Graham Banks]

I've released an update (v0.2.1) that gets rid of the "0" default issue for CPU count. It's now available on the releases page.

Working well under ChessGUI. Will run a gauntlet starting tomorrow.

[SzG]

I've released an update (v0.2.1) that gets rid of the "0" default issue for CPU count. It's now available on the releases page.

Thanks Stephen. Seems to work OK. In all probability it will appear on next week's CCRL blitz update.