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Re: current development
From: |
Philippe Michel |
Subject: |
Re: current development |
Date: |
Wed, 4 Dec 2019 00:06:58 +0100 |
User-agent: |
Mutt/1.12.2 (2019-09-21) |
On Wed, Dec 04, 2019 at 09:46:09AM +1300, Joseph Heled wrote:
> All I know is that I installed gnubg from the repository (GNU
> Backgammon 1.06.002) and the rollouts speed seemed terrible.
>
> Do I need to do something in the GUI to enable multi-threading? (and I
> hope that by multi-threading we are talking about multi-core, not just
> threading, which does not help)
You may need to change the number of evaluation threads in the
Settings|Other window. The default is 1.
This is really multi-threading, It is up to you to choose a number of
threads adapted to your processor. Maybe the number of cores, or that
number minus 1, or a fraction of that if you intent to run multiple
rollouts or 4-ply analyses in parallel.
FWIW, I had the opportunity, at a previous job, to try to run gnubg on a
Knights Landing processor with 256 threads. It didn't run very
efficiently, maybe 100 times faster that with one thread, but it ran
without crashes or lock-ups or similar issues.
- Re: current development, (continued)
- Re: current development, Philippe Michel, 2019/12/04
- Re: current development, Joseph Heled, 2019/12/04
- Re: current development, Russ Allbery, 2019/12/04
- Re: current development, Russ Allbery, 2019/12/03
- Re: current development, Joseph Heled, 2019/12/03
- Re: current development, Russ Allbery, 2019/12/03
- Re: current development,
Philippe Michel <=
- Re: current development, Joseph Heled, 2019/12/03
- Re: current development, Joseph Heled, 2019/12/03
- Re: current development, Joseph Heled, 2019/12/03
- Re: current development, Ralph Corderoy, 2019/12/04
- Re: current development, Ralph Corderoy, 2019/12/04
- Message not available
- Re: current development, Joseph Heled, 2019/12/04
Re: current development, Timothy Y. Chow, 2019/12/03