Confusing use of language.Joerg Oster wrote:No.
Afaik, it means, threads without work should sleep and not keep spinning. See http://talkchess.com/forum/viewtopic.ph ... 14&t=37574
I do not think it is confusing, but to have a very straightforward dialog,Graham Banks wrote:Confusing use of language.Joerg Oster wrote:No.
Afaik, it means, threads without work should sleep and not keep spinning. See http://talkchess.com/forum/viewtopic.ph ... 14&t=37574
Should be changed to Non-use of sleeping threads or something that more correctly indicates what is meant.
Whatever it means, apparently the default choice is Use Sleeping Threads = true.Don wrote:What does the option "use sleeping threads" in Stockfish mean? If I set Stockfish to use 4 threads does it mean it will try to use more than 4 threads if they are not being used by other processes?
Don
Code: Select all
/// init() initializes the UCI options to their hard coded default values
/// and initializes the default value of "Threads" and "Min Split Depth"
/// parameters according to the number of CPU cores detected.
void init(OptionsMap& o) {
int cpus = std::min(cpu_count(), MAX_THREADS);
int msd = cpus < 8 ? 4 : 7;
o["Use Debug Log"] = Option(false, on_logger);
o["Use Search Log"] = Option(false);
o["Search Log Filename"] = Option("SearchLog.txt");
o["Book File"] = Option("book.bin");
o["Best Book Move"] = Option(false);
o["Contempt Factor"] = Option(0, -50, 50);
o["Mobility (Midgame)"] = Option(100, 0, 200, on_eval);
o["Mobility (Endgame)"] = Option(100, 0, 200, on_eval);
o["Pawn Structure (Midgame)"] = Option(100, 0, 200, on_eval);
o["Pawn Structure (Endgame)"] = Option(100, 0, 200, on_eval);
o["Passed Pawns (Midgame)"] = Option(100, 0, 200, on_eval);
o["Passed Pawns (Endgame)"] = Option(100, 0, 200, on_eval);
o["Space"] = Option(100, 0, 200, on_eval);
o["Aggressiveness"] = Option(100, 0, 200, on_eval);
o["Cowardice"] = Option(100, 0, 200, on_eval);
o["Min Split Depth"] = Option(msd, 4, 12, on_threads);
o["Max Threads per Split Point"] = Option(5, 4, 8, on_threads);
o["Threads"] = Option(cpus, 1, MAX_THREADS, on_threads);
o["Use Sleeping Threads"] = Option(true);This is only true for development versions of SF. For release versions, it is set to false by default. This commit did that for SF3 https://github.com/mcostalba/Stockfish/ ... de3dfe22bezullil wrote:Whatever it means, apparently the default choice is Use Sleeping Threads = true.Don wrote:What does the option "use sleeping threads" in Stockfish mean? If I set Stockfish to use 4 threads does it mean it will try to use more than 4 threads if they are not being used by other processes?
Don
So then which setting should we use? Is there any guideline?gladius wrote:This is only true for development versions of SF. For release versions, it is set to false by default. This commit did that for SF3 https://github.com/mcostalba/Stockfish/ ... de3dfe22bezullil wrote:Whatever it means, apparently the default choice is Use Sleeping Threads = true.Don wrote:What does the option "use sleeping threads" in Stockfish mean? If I set Stockfish to use 4 threads does it mean it will try to use more than 4 threads if they are not being used by other processes?
Don
Unless Marco says otherwise, I believe you want it "false". It sounds like a good idea (use sleeping threads) but I believe he stated that the term doesn't really mean what it says (he is not a native English speaker)...carldaman wrote:So then which setting should we use? Is there any guideline?gladius wrote:This is only true for development versions of SF. For release versions, it is set to false by default. This commit did that for SF3 https://github.com/mcostalba/Stockfish/ ... de3dfe22bezullil wrote:Whatever it means, apparently the default choice is Use Sleeping Threads = true.Don wrote:What does the option "use sleeping threads" in Stockfish mean? If I set Stockfish to use 4 threads does it mean it will try to use more than 4 threads if they are not being used by other processes?
Don
If testing a newer developmental version, should we leave the default setting alone (=true), even though Stockfish v3 has it the other way around (=false)?
Thanks,
CL
carldaman wrote:So then which setting should we use? Is there any guideline?gladius wrote:This is only true for development versions of SF. For release versions, it is set to false by default. This commit did that for SF3 https://github.com/mcostalba/Stockfish/ ... de3dfe22bezullil wrote:Whatever it means, apparently the default choice is Use Sleeping Threads = true.Don wrote:What does the option "use sleeping threads" in Stockfish mean? If I set Stockfish to use 4 threads does it mean it will try to use more than 4 threads if they are not being used by other processes?
Don
If testing a newer developmental version, should we leave the default setting alone (=true), even though Stockfish v3 has it the other way around (=false)?
Thanks,
CL