dje-dev / ceres Goto Github PK

Either of these two produces crash with v0.88:
uci
setoption name MultiPV value 500
setoption name SyzygyPath value C:\Users\Owner\Documents\Misc\Chess\Syzygy
position fen kr6/8/8/4KN2/8/8/8/8 w - - 0 1
go infinite

uci
setoption name VerboseMoveStats value true
setoption name LogLiveStats value true
setoption name SyzygyPath value C:\Users\Owner\Documents\Misc\Chess\Syzygy
position fen kr6/8/8/4KN2/8/8/8/8 w - - 0 1
go infinite

probably not an issue but it takes time for ceres to build up speed so at TC like 1sec+.1. It is much weaker than leela due to the slower speed.

When I select the Ceres.exe file in Nibbler as the engine, it (nibbler) gets stuck on "Awaiting readyok from engine". I am wondering why this is happening. My card is an NVIDIA GeForce GTX 980 (Gigabyte subseller). I followed the installation directions.

Currently this option can only be set before the first position is evaluated (otherwise warning message is output).

2021-08-13 11:19:03.750<--1:Unhandled exception. System.AggregateException: One or more errors occurred. (Network ./weights_run2_703810.pb not registered via Register or discoverable via directories specified via NNWeightsFilesLC0.RegisterDirectory method.)

I'm getting the above error when trying to install Ceres in Arena chess. How do I fix this?

a error runnig Cere 0.90 - error "ErrorInvalidPtx".

cant work

My computer only have CPU. Is there a way for me to run Ceres program? Thanks

As reported by jjosh, for example with T60 + T40.

Circa line 141 of NNEvaluatorLinearCombo, they have different representations that can't be mathematically averaged. Need to find an appropriate transformation, will probably have to add logic to "downgrade" the combination to be non-WDL.

setoption name LogLiveStats value true
setoption name VerboseMoveStats value true
position startpos moves e2e4

go infinite

info depth 6 seldepth 12 time 100 nodes 531 score cp -11 tbhits 0 nps 5290 pv c7c5 g1f3 e7e6 b1c3 b8c6 d2d4 c5d4 f3d4 g8f6 d4b5 d7d6  string M= 132
info string g2g4  (378 ) N:              0 (+    0) (P:      0.63%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.2595) (V:    0.0000)
info string f2f3  (346 ) N:              0 (+    0) (P:      0.65%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.2697) (V:    0.0000)
info string f2f4  (351 ) N:              0 (+    0) (P:      0.67%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.2768) (V:    0.0000)
info string b2b4  (234 ) N:              0 (+    0) (P:      0.74%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.3062) (V:    0.0000)
info string h2h4  (403 ) N:              0 (+    0) (P:      0.78%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.3237) (V:    0.0000)
info string g1h3  (161 ) N:              0 (+    0) (P:      0.78%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.3250) (V:    0.0000)
info string b1a3  ( 34 ) N:              0 (+    0) (P:      0.86%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.3582) (V:    0.0000)
info string a7a5  (207 ) N:              2 (+    0) (P:      1.08%) (WL:    -0.2378) (D:    0.2563) (M:  125.0) (Q:    -0.2307) (U:    0.1493) (V:   -0.2378)
info string b7b6  (230 ) N:              3 (+    0) (P:      1.45%) (WL:    -0.2227) (D:    0.2515) (M:  124.0) (Q:    -0.2320) (U:    0.1505) (V:   -0.2227)
info string h7h6  (400 ) N:              3 (+    0) (P:      1.56%) (WL:    -0.2078) (D:    0.2612) (M:  126.0) (Q:    -0.2263) (U:    0.1614) (V:   -0.2078)
info string g8f6  (159 ) N:              5 (+    0) (P:      1.54%) (WL:    -0.1963) (D:    0.2642) (M:  127.0) (Q:    -0.1590) (U:    0.1064) (V:   -0.1963)
info string g7g6  (374 ) N:              5 (+    0) (P:      2.01%) (WL:    -0.2002) (D:    0.2739) (M:  127.0) (Q:    -0.1774) (U:    0.1387) (V:   -0.2002)
info string d7d5  (293 ) N:              6 (+    0) (P:      1.91%) (WL:    -0.1326) (D:    0.2993) (M:  131.0) (Q:    -0.1490) (U:    0.1130) (V:   -0.1326)
info string a7a6  (204 ) N:              7 (+    0) (P:      2.85%) (WL:    -0.1741) (D:    0.2690) (M:  129.0) (Q:    -0.1898) (U:    0.1475) (V:   -0.1741)
info string b8c6  ( 36 ) N:              8 (+    0) (P:      2.19%) (WL:    -0.1731) (D:    0.2783) (M:  126.0) (Q:    -0.1458) (U:    0.1009) (V:   -0.1731)
info string d7d6  (288 ) N:             12 (+    0) (P:      3.54%) (WL:    -0.1416) (D:    0.2778) (M:  129.0) (Q:    -0.1550) (U:    0.1128) (V:   -0.1416)
info string c7c6  (259 ) N:             52 (+    0) (P:      8.76%) (WL:    -0.1494) (D:    0.2905) (M:  130.0) (Q:    -0.0969) (U:    0.0685) (V:   -0.1494)
info string e7e6  (317 ) N:             76 (+    0) (P:     15.77%) (WL:    -0.0986) (D:    0.2939) (M:  128.0) (Q:    -0.1128) (U:    0.0849) (V:   -0.0986)
info string e7e5  (322 ) N:            100 (+    0) (P:     15.88%) (WL:    -0.1055) (D:    0.3149) (M:  132.0) (Q:    -0.0856) (U:    0.0652) (V:   -0.1055)
info string c7c5  (264 ) N:            251 (+    0) (P:     36.30%) (WL:    -0.0857) (D:    0.2988) (M:  130.0) (Q:    -0.0806) (U:    0.0597) (V:   -0.0857)
info string node  ( 20 ) N:            531 (+    0) (P:    100.00%) (WL:    -0.1003) (D:    0.3037) (M:  130.0) (Q:    -0.0965) (U:    0.0000) (V:   -0.1003)

[further output deleted]

Note that the position I gave requires a move from Black, however several of the moves listed (all with N: 0) are by White.

Likely this happens when Ceres decides just to rely on tree reuse and not think. It just leaves an annoying hole in the PGN record.

Ceres switches into a different mode at the 5000 node threshold, and a second backend session is created, doubling memory requirements (beyond that of LC0). On small GPUs with big networks this may result in a crash. At a minimum, error reporting should be improved.

Hello,
I have Nvidia Geforce GTX 1060 6 Gb, I installed Microsoft .NET 5.0, I copied these three dlls from LC0 distribution ZIP file, but I don't know what weights file to use, because the engine doesn''t start thinking.
I try to use:
-https://training.lczero.org/networks/1
-https://tests.stockfishchess.org/nns
-69722_value_focus_2.gz
But the engine does not work.
Please help me.
Thanks.

From Crem:
While it doesn't have too many authors, it may make sense to re-license it to "GPL with exception" rather than simple "GPL", so that it could be bundled with nvidia cudnn libraries.

From borg
@dje I suggest the exception wording from Leela Zero, they have added TensorRT to the exceptions. See leela-zero/leela-zero#2032

I actually have an old computer without avx2 but with a good graphic card, any chances to run it without AVX2 ?
Thanks

Developers who pull Ceres and do a build in Visual Studio will by default get a "Debug" build instead of "Release" which will run at least 30% more slowly. There is no way to change this default behavior (that I'm aware of).

To avoid unexpected bad results from Ceres, a safeguard is added.

Commit 7d92a53 adds behavior that a debug build of Ceres will abort at startup (with a message):
"ERROR: Ceres was compiled in Debug mode and will only run\r\n"
+ "if the the DebugAllowed option is set to true\r\n"
+ "or the operating system environment variable CERES_DEBUG is defined.";

Ideally Ceres would support the depth command, or at least not report an ugly error message.

Chad commented "It would be nice if depth was tied to amount of nodes again since tools like Aquarium IDeA only use time and/or depth but not nodes."

Hi, we are trying to reproduce the results of Human grandmaster move agreement analysis from API Samples page. It would be great to use same .pgn files that were used in the sample.

Could you please explain where/how to get this database?

Users might make entries (intended for command line) such as pruning=false into Ceres.json not realizing that command-line and Ceres.json entries are not always the same. This can be confusing, at a minimum the documentation should make this clear and Ceres should warn if unsupported entries are found in the Ceres.json file.

Tinker reports Ceres "getting time losses" on about 1 out of 10 games at 30 seconds + 1 second using cutechess. He kindly provided a sample log.

Initial investigation of the cutechess log does not explain this. Actually although Ceres was indeed on move when it stopped, cutechess does not claim that Ceres lost, it does not adjudicate it in favor of the opponent (as it usually would) with if there were a crash, i.e. we do not see any see entries such as:

Aug 10 08:35:01  io.elementary.cerbere.desktop[2026]: Engine Lc0(0) failed to respond to ping
Aug 10 08:35:01  io.elementary.cerbere.desktop[2026]: Terminating process of engine Lc0(0)

Instead we just see that it asked Ceres to stop thinking after 1.1seconds following a go command in which Ceres was informed it had 11.799 seconds left on its clock (before increment). Cutechess then marks it as "unterminated."

So the reason for cutechess ending the game/tournament is unknown. It may well be a Ceres bug, but there does not seem to be evidence of that (yet).

2210312 >ceres(20): isready
2210312 <ceres(20): readyok
2210312 >ceres(20): go wtime 11799 btime 14471 winc 1000 binc 1000
2210414 <ceres(20): info depth 0 seldepth 17 time 102 nodes 26244 score cp -5 tbhits 0 nps 10713 pv c3c4 e5c5 b5d6 e7d6 d1d6 c5c4 a4b5 c4c3 f3d5 c3c2 a5a6 c8a6 d6a6 g6g5 a6a7 c2f2 b5c4  string M= 115
2210931 <ceres(20): info depth 2 seldepth 17 time 619 nodes 35448 score cp -6 tbhits 2 nps 16636 pv c3c4 e5c5 b5d6 e7d6 d1d6 c5c4 a4b5 c4c3 f3d5 c3c2 a5a6 c8a6 d6a6 g6g5 a6a7 c2f2 b5c4  string M= 103
2211431 <ceres(20): info depth 3 seldepth 6 time 1119 nodes 46040 score cp -5 tbhits 2 nps 18658 pv c3c4 e7c5 b5d6 c8d7 d6b5 d7c8  string M= 92
2211478 >ceres(20): stop

Seems it takes a few seconds for ceres to start up and this causes ceres to time out. Seems to only happen the first game.

About this:

Both names and values can have spaces I'm afraid, so you need to find the (first) instance of name and the first instance of value and then take whatever string is between them as the name, and whatever string is after value as the value.

(Deleting leading and trailing whitespace from them, ofc.)

And I suppose one needs to worry about names that actually contain the string "value" and so need to check there's whitespace on both sides of value, yeah UCI has some questionable parts....

Please don't get mad if these are easy to setup I am new to this

Useful for debugging purposes. Possibly also write minidump file?

Time management needs to be more conservative when playing without increment due to overhead of evaluating (even a single) batch.

I've not built Ceres but I hear reports that castling causes problems for Nibbler.

Nibbler currently always runs in Chess 960 mode and so (for normal chess) sends castling moves as one of:

• e1h1
• e1a1
• e8h8
• e8a8

Would it be possible / easy to accept these as valid castling moves? Basically, check if the relevant king is present on the source square, then treat it as if e1g1 or whatever had come...

Because of failure to use DTZ feature of tablebases, Ceres can fail to convert overwhelmingly superior positions in the endgame.
Ceres is likely to suffer many draws if playing tournaments using tablebases for engines but not adjudication.

Example:
8/8/B7/8/8/Q3B1R1/K1k5/8 w - - 7 86

Ceres creates 2x as many session as LC0 on the GPU and therefore has higher memory GPU memory requirement.

Some smaller GPUs may have difficult with this (perhaps only with large networks).

As a workaround/fix, as suggested by LC0 member borg, "you can reduce vram requirements by reducing the backend's max batch size."

Make it very easy to call out to this tool which generates beautiful visualizations of the search tree
https://github.com/jkormu/Leela-chess-Tree

Hello Mr./Mrs.,
I downloaded the Ceres engine, but the engine it autocloses when I double click on it.
Do I need a dll file or something else?
Please help me.
Thanks a lot.

M1X will be available.

Line 197 of Position.cs appears to contain a typo. One of the bishopCountThem's should be an Us:

else if (bishopCountThem != 2 || bishopCountThem != 2) // two bishops same side may not be a draw

uci
setoption name MultiPV value 500
setoption name LogLiveStats value true
setoption name VerboseMoveStats value true
go nodes 1

Loaded network weights: 10x128 WDL MLH  from ./Networks/weights_run2_703810.pb.gz

CUDA device 0: NVIDIA GeForce RTX 2060 SMs: 30 Mem: 6gb
CUDA device 0: NVIDIA GeForce RTX 2060 SMs: 30 Mem: 6gb

info depth 1 seldepth 1 time 4 nodes 1 score cp 4 tbhits 0 nps 269 multipv 1 pv  string M= 134
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 2 pv c2c4
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 3 pv d2d4
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 4 pv g1f3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 5 pv e2e3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 6 pv c2c3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 7 pv b2b3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 8 pv g2g3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 9 pv a2a3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 10 pv b1c3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 11 pv h2h3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 12 pv d2d3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 13 pv a2a4
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 14 pv h2h4
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 15 pv b2b4
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 16 pv f2f4
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 17 pv b1a3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 18 pv f2f3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 19 pv g1h3
info depth 0 seldepth 0 time 5 nodes 1 score cp 0 tbhits 0 multipv 20 pv g2g4
info string g2g4  (378 ) N:              0 (+    0) (P:      0.55%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0096) (V:    0.0000)
info string g1h3  (161 ) N:              0 (+    0) (P:      0.72%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0125) (V:    0.0000)
info string f2f3  (346 ) N:              0 (+    0) (P:      0.73%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0128) (V:    0.0000)
info string b1a3  ( 34 ) N:              0 (+    0) (P:      0.79%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0138) (V:    0.0000)
info string f2f4  (351 ) N:              0 (+    0) (P:      0.79%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0139) (V:    0.0000)
info string b2b4  (234 ) N:              0 (+    0) (P:      0.86%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0150) (V:    0.0000)
info string h2h4  (403 ) N:              0 (+    0) (P:      0.89%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0155) (V:    0.0000)
info string a2a4  (207 ) N:              0 (+    0) (P:      1.24%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0217) (V:    0.0000)
info string d2d3  (288 ) N:              0 (+    0) (P:      1.74%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0304) (V:    0.0000)
info string h2h3  (400 ) N:              0 (+    0) (P:      1.78%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0311) (V:    0.0000)
info string b1c3  ( 36 ) N:              0 (+    0) (P:      2.18%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0381) (V:    0.0000)
info string a2a3  (204 ) N:              0 (+    0) (P:      2.54%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0444) (V:    0.0000)
info string g2g3  (374 ) N:              0 (+    0) (P:      2.60%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0453) (V:    0.0000)
info string b2b3  (230 ) N:              0 (+    0) (P:      2.75%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0480) (V:    0.0000)
info string c2c3  (259 ) N:              0 (+    0) (P:      5.19%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.0905) (V:    0.0000)
info string e2e3  (317 ) N:              0 (+    0) (P:      7.12%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.1243) (V:    0.0000)
info string g1f3  (159 ) N:              0 (+    0) (P:      7.84%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.1368) (V:    0.0000)
info string d2d4  (293 ) N:              0 (+    0) (P:      9.64%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.1682) (V:    0.0000)
info string c2c4  (264 ) N:              0 (+    0) (P:     21.42%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.3739) (V:    0.0000)
info string e2e4  (322 ) N:              0 (+    0) (P:     28.59%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.4989) (V:    0.0000)
info string e2e4  (  0 ) N:              0 (+    0) (P:      0.00%) (WL:     0.0256) (D:    0.0000) (M:    0.0) (Q:     0.0256) (U:    0.0000) (V:    0.0256)
info string node  ( 20 ) N:              1 (+    0) (P:    100.00%) (WL:     0.0256) (D:    0.3096) (M:  134.0) (Q:     0.0256) (U:    0.0000) (V:    0.0256)
bestmove e2e4

First problem - standard UCI output

info depth 1 seldepth 1 time 4 nodes 1 score cp 4 tbhits 0 nps 269 multipv 1 pv string M= 134

The PV of the top move is blank and does not say which move is being reported.

Second problem - Verbose output

info string e2e4  (322 ) N:              0 (+    0) (P:     28.59%) (WL:     0.0000) (D:    0.0000) (M:    0.0) (Q:     0.0000) (U:    0.4989) (V:    0.0000)
info string e2e4  (  0 ) N:              0 (+    0) (P:      0.00%) (WL:     0.0256) (D:    0.0000) (M:    0.0) (Q:     0.0256) (U:    0.0000) (V:    0.0256)

There is a duplicate output in the VerboseMoveStats for the top move, for some reason.

right after loading the ceres.json it crashes with this message

96.625<--1:Ceres user settings loaded from file Ceres.json
96.641<--1:Unhandled exception. System.ComponentModel.Win32Exception (87): The parameter is incorrect.
96.641<--1: at System.Diagnostics.Process.set_ProcessorAffinityCore(IntPtr value)
96.641<--1: at System.Diagnostics.Process.set_ProcessorAffinity(IntPtr value)
96.641<--1: at Ceres.Base.OperatingSystem.HardwareManager.AffinitizeSingleProcessor() in C:\Ceres-main\src\Ceres.Base\OperatingSystem\HardwareManager.cs:line 91
96.641<--1: at Ceres.Base.OperatingSystem.HardwareManager.Initialize(Boolean affinitizeSingleProcessor) in C:\Ceres-main\src\Ceres.Base\OperatingSystem\HardwareManager.cs:line 37
96.641<--1: at Ceres.MCTS.Environment.MCTSEngineInitialization.BaseInitialize() in C:\Ceres-main\src\Ceres.MCTS\Environment\MCTSEngineInitialization.cs:line 40
96.641<--1: at Ceres.Program.Main(String[] args) in C:\Ceres-main\src\Ceres\Program.cs:line 68

Ceres user settings loaded from file Ceres.json
Network evaluation configured to use:

Entering UCI command processing mode.
go
Unhandled exception. System.Exception: Network 66740 not registered via Register or discoverable via directories specified via NNWeightsFilesLC0.RegisterDirectory method.
at Ceres.Chess.NNFiles.NNWeightsFiles.LookupNetworkFile(String netWeightsID, Boolean throwExceptionIfMissing)
at Ceres.Chess.NNEvaluators.NNEvaluatorFactory.Singleton(NNEvaluatorNetDef netDef, NNEvaluatorDeviceDef deviceDef)
at Ceres.Chess.NNEvaluators.NNEvaluatorFactory.DoBuildEvaluator(NNEvaluatorDef def)
at Ceres.Chess.NNEvaluators.NNEvaluatorFactory.BuildEvaluator(NNEvaluatorDef def)
at Ceres.MCTS.Params.NNEvaluatorSet.MakeEvaluator()
at Ceres.MCTS.Params.NNEvaluatorSet.get_Evaluator1()
at Ceres.MCTS.Search.MCTSSearchFlow..ctor(MCTSManager manager, MCTSIterator context)
at Ceres.MCTS.Iteration.MCTSManager.DoSearch(SearchLimit searchLimit, MCTSProgressCallback progressCallback)
at Ceres.MCTS.Iteration.MCTSManager.Search(MCTSManager manager, Boolean verbose, MCTSProgressCallback progressCallback, Boolean possiblyUsePositionCache)
at Ceres.MCTS.Iteration.MCTSLaunch.Search(NNEvaluatorSet nnEvaluators, ParamsSelect paramsSelect, ParamsSearch paramsSearch, IManagerGameLimit timeManager, ParamsSearchExecutionModifier paramsSearchExecutionPostprocessor, MCTSIterator reuseOtherContextForEvaluatedNodes, PositionWithHistory priorMoves, SearchLimit searchLimit, Boolean verbose, DateTime startTime, List1 gameMoveHistory, MCTSProgressCallback progressCallback, Boolean possiblyUsePositionCache, Boolean isFirstMoveOfGame) at Ceres.Features.GameEngines.GameEngineCeresInProcess.RunSearchPossiblyTreeReuse(MCTSIterator reuseOtherContextForEvaluatedNodes, PositionWithHistory curPositionAndMoves, List1 gameMoveHistory, SearchLimit searchLimit, MCTSProgressCallback callback, Boolean verbose)
at Ceres.Features.GameEngines.GameEngineCeresInProcess.DoSearch(PositionWithHistory curPositionAndMoves, SearchLimit searchLimit, List1 gameMoveHistory, ProgressCallback callback, Boolean verbose) at Ceres.Chess.GameEngines.GameEngine.Search(PositionWithHistory curPositionAndMoves, SearchLimit searchLimit, List1 gameMoveHistory, ProgressCallback callback, Boolean verbose)
at Ceres.Chess.GameEngines.GameEngine.Warmup()
at Ceres.Features.UCI.UCIManager.InitializeEngineIfNeeded()
at Ceres.Features.UCI.UCIManager.PlayUCI()
at Ceres.Commands.DispatchCommands.LaunchUCI(String keyValueArgs, String fen)
at Ceres.Commands.DispatchCommands.ProcessCommand(String cmd)
at Ceres.Program.Main(String[] args)

F:\ceres>

Borg pointed out the one file that needs to be changed in the Leela source code tree is network_cudnn.cc. That is confusing because actually the Ceres addition to that code is currently hardwired to use CUDA and not CUDNN:

      _network[sessionIndex] = MakeCudaNetworkAuto(weights, od);

This is not an actual problem, just something confusing to be cleaned up.

Hello,
when running command like go nodes 10 I got this error and obviously crashed. I compiled LC0 from src from https://github.com/dje-dev/lc0. windows 10, VS2019, cuda10.2 . Any ideas where I made a mistake?
Thanks
Arnaud

In running Ceres 0.91a today via Nibbler, Ceres quickly found the "right" move of Nd5...per Stockfish :-) However I noticed the WDL numbers did not update (continuing to show the move as unattractive even though the Q value got increasingly positive). Is this a Nibbler issue?

Network specifications expect only the base name (ID), for example use
LC0:703810
instead of
LC0:weights_run2_703810.pb

This behavior may be convenient but could also be confusing. Consider supporting both modes, or issue a warning as needed.

(based on feed back from masterkni666)

Possibly MLH feature adds a small amount of Elo, and it improves the user experience. Finish support of MLH in search in Ceres, also adding arguments to allow configuration.

Fix #15 did fix the UCI eval calls but Nibbler still does not work with Castling.

Seemingly, it both does not return any moves that involve Castling and also crashes the engine if you do Castle.

Example fen: r1bqkb1r/ppp3p1/2n2p2/3p1n1p/3P4/2P2N1P/PP1NBPP1/R1BQK2R w KQkq - 2 9

In Ceres.exe UCI it returns bestmove e1g1
In Nibbler it shows top move of Qb3

After you castle with White is crashes the engine...

Reproduction steps:

1. Start Ceres 0.89 in UCI mode
2. setoption name FPU value 1
3. go nodes 800
4. dump-params
5. setoption name FPU value 2
6. dump-params

Result:
After step 4. FPUValue is correctly set as 1. After step 6. FPUValue is still 1.

Expected result:
FPU should be 2 after step 6

Note that this is not bug in dump-params as it is also clear from search tree that parameter is not changed.

Changing

        case "fpu":
          SetFloat(value, 0, float.MaxValue, ref fpu);
          break;

to

        case "fpu":
          SetFloat(value, 0, float.MaxValue, ref (CeresEngine is not null ? ref CeresEngine.ChildSelectParams.FPUValue :  ref fpu));
          break;

seems to fix the issue.

A user reported a crash upon startup in the method OutputBanner. It seems the code to query for the git version that is executed here may no work on some configurations.

As a workaround, one can just comment out the call to OutputBanner on line 42 of Program.cs.

(Bigo)
"Well normally when I reach syzygy Ceres crashes with Nibbler but here it's working fine since I only have WDL and not DTZ"

Possibly same as #38

Here is the full output of the message I'm seeing:

Ceres < uci
Ceres > |=====================================================|
Ceres > | Ceres - A Monte Carlo Tree Search Chess Engine |
Ceres > | |
Ceres > | (c) 2020- David Elliott and the Ceres Authors |
Ceres > | With network backend code from Leela Chess Zero. |
Ceres > | |
Ceres > | Version 0.80. Use help to list available commands. |
Ceres > | {git}
Ceres > |=====================================================|
Ceres > Ceres user settings loaded from file Ceres.json
Ceres > Network evaluation configured to use:
Ceres > Entering UCI command processing mode.
Ceres > id name Ceres
Ceres > id author David Elliott and the Ceres Authors
Ceres > uciok
Ceres < isready
Ceres > Fatal error.
Ceres > System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Ceres > Repeat 2 times:

Ceres > --------------------------------

Ceres > at Ceres.Chess.NNEvaluators.LC0DLL.LCO_Interop.Alloc(Int32, System.String, Int32)
Ceres >

Ceres > at Ceres.Chess.NNEvaluators.Internals.LC0LibraryNNEvaluator..ctor(System.String, Int32)
Ceres >

Ceres > at Ceres.Chess.NNEvaluators.NNEvaluatorLC0..ctor(Ceres.Chess.NNFiles.INNWeightsFileInfo, Int32[], Chess.Ceres.NNEvaluators.NNEvaluatorPrecision)
Ceres >

Ceres > at Ceres.Chess.NNEvaluators.NNEvaluatorLC0..ctor(Ceres.Chess.NNFiles.INNWeightsFileInfo, Int32, Chess.Ceres.NNEvaluators.NNEvaluatorPrecision)
Ceres >

Ceres > at Ceres.Chess.NNEvaluators.NNEvaluatorFactory.Singleton(Ceres.Chess.NNEvaluators.Defs.NNEvaluatorNetDef, Ceres.Chess.NNEvaluators.Defs.NNEvaluatorDeviceDef)
Ceres >

Ceres > at Ceres.Chess.NNEvaluators.NNEvaluatorFactory.DoBuildEvaluator(Ceres.Chess.NNEvaluators.Defs.NNEvaluatorDef)
Ceres >

Ceres > at Ceres.Chess.NNEvaluators.NNEvaluatorFactory.BuildEvaluator(Ceres.Chess.NNEvaluators.Defs.NNEvaluatorDef)
Ceres >

Ceres > at Ceres.MCTS.Params.NNEvaluatorSet.MakeEvaluator()
Ceres >

Ceres > at Ceres.MCTS.Params.NNEvaluatorSet.get_Evaluator1()
Ceres >

Ceres > at Ceres.MCTS.Search.MCTSSearchFlow..ctor(Ceres.MCTS.Iteration.MCTSManager, Ceres.MCTS.Iteration.MCTSIterator)
Ceres >

Ceres > at Ceres.MCTS.Iteration.MCTSManager.DoSearch(Ceres.Chess.SearchLimit, MCTSProgressCallback)
Ceres >

Ceres > at Ceres.MCTS.Iteration.MCTSManager.Search(Ceres.MCTS.Iteration.MCTSManager, Boolean, MCTSProgressCallback, Boolean)
Ceres >

Ceres > at Ceres.MCTS.Iteration.MCTSLaunch.Search(Ceres.MCTS.Params.NNEvaluatorSet, Ceres.MCTS.Params.ParamsSelect, Ceres.MCTS.Params.ParamsSearch, Ceres.MCTS.Managers.Limits.IManagerGameLimit, Ceres.MCTS.Iteration.ParamsSearchExecutionModifier, Ceres.MCTS.Iteration.MCTSIterator, Ceres.Chess.Positions.PositionWithHistory, Ceres.Chess.SearchLimit, Boolean, System.DateTime, System.Collections.Generic.List`1<Ceres.Chess.GameEngines.GameMoveStat>, MCTSProgressCallback, Boolean, Boolean)
Ceres >

Ceres > at Ceres.Features.GameEngines.GameEngineCeresInProcess.RunSearchPossiblyTreeReuse(Ceres.MCTS.Iteration.MCTSIterator, Ceres.Chess.Positions.PositionWithHistory, System.Collections.Generic.List`1<Ceres.Chess.GameEngines.GameMoveStat>, Ceres.Chess.SearchLimit, MCTSProgressCallback, Boolean)
Ceres >

Ceres > at Ceres.Features.GameEngines.GameEngineCeresInProcess.DoSearch(Ceres.Chess.Positions.PositionWithHistory, Ceres.Chess.SearchLimit, System.Collections.Generic.List`1<Ceres.Chess.GameEngines.GameMoveStat>, ProgressCallback, Boolean)
Ceres >

Ceres > at Ceres.Chess.GameEngines.GameEngine.Search(Ceres.Chess.Positions.PositionWithHistory, Ceres.Chess.SearchLimit, System.Collections.Generic.List`1<Ceres.Chess.GameEngines.GameMoveStat>, ProgressCallback, Boolean)
Ceres >

Ceres > at Ceres.Chess.GameEngines.GameEngine.Warmup()
Ceres >

Ceres > at Ceres.Features.UCI.UCIManager.InitializeEngineIfNeeded()
Ceres >

Ceres > at Ceres.Features.UCI.UCIManager.PlayUCI()
Ceres >

Ceres > at Ceres.Commands.DispatchCommands.LaunchUCI(System.String, System.String)
Ceres >

Ceres > at Ceres.Commands.DispatchCommands.ProcessCommand(System.String)
Ceres >

Ceres > at Ceres.Program.Main(System.String[])
Ceres >

Ceres < ucinewgame
Ceres < position startpos moves g1f3 d7d6 g2g3 e7e5 c2c4
Ceres < go infinite

I have Windows7, but I see the message:

"
|=========================================================|
| Ceres - A Monte Carlo Tree Search Chess Engine |
| |
| (c) 2020- David Elliott and the Ceres Authors |
| With network backend code from Leela Chess Zero. |
| |
| Version 0.91b Use help to list available commands. |
|=========================================================|

Fatal Error. Windows Version 7 or above required.
"

What's the matter?

A move with allotted 30 seconds ran for 1200 seconds at about the same time as Daylight Savings Time change took effect on the computer (Windows) suggesting a problem time tracking problem.

I get this error on the first-time install. The file path is correct so I'm not sure what's happening.

I'm new to this, so if it's a simple issue please don't be annoyed :)

Tinker reports crash with extra spaces, e.g. "go nodes xxx"