Node count is different just becuase now we don't log on
"bench.txt" file anymore so that we avoid some calls to
pretty_pv() that calls Position::do_move().
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This allow us to restore the old depth 12 benchmark
and fixes one and for all the depth mess.
Test confirms no regression:
After 5658 games 892 - 924 - 3842 ELO -1 (+- 5.2)
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Interestingly this patch will make people complain search depth
is reduced against 2.0.1 ;-) but actually it is only an artifact.
Spotted by Joona.
No functional change apart from a different do / undo move
sequence due to teh fact that we don't call pv_info_to_uci()
anymore before entering id loop.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Keep the isChess960 flag inside Position so that is
copied with the Position, but esplicitly highlight the
fact that a FEN string has not enough information to detect
Chess960 in general case. To do this add a boolean argument
isChess960 to from_fen() function so to self document this
shortcoming of FEN notation.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
It is a redundant boiler plate, just call initialization and
resource release directly from main()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Now stockfish bench' defaults to
stockfish bench 128 1 12 default depth
that is the most used line (at least by me)
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
And also store the node counter in Position and not in Thread.
This will allow to properly count nodes also in sub trees with
SMP active.
This requires a surprisingly high number of changes
in a lot of places to make it work properly.
No functional change but node count changed for obvious reasons.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Complete rewrite the function and extend compatibility
also to X-FEN notation for Chess960.
We are now able to read standard FEN, Shredder-FEN and X-FEN.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
We don't need to pass side_to_move because we can get
it directly from the position object.
Note that in benchmark we always used to pass '0' and
it was a bug, but with no effect because was used only
in time[] and increment[], set always to 0 for both
colors.
Also additional small cleanup while there.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This is the best place because when we split we do a
copy of the position and also threadID, once set in a
given position, never changes anymore.
Forbid use of Position's default and copy c'tor to avoid
nasty bugs in case a position is created without explicitly
setting the threadID.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Now with:
stockfish bench 128 1 5 default perft
it is possible to get perft 5 results of each position and
the first 3 positions correspond to the well known test
position in:
http://chessprogramming.wikispaces.com/Perft+Results
This allow to quickly check for perft consistency running
the 'bench' command.
No functional change but signature has changed because
bench default positions 2 and 3 have changed.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
According to UCI standard once engine receives 'go infinite'
command it should search until the "stop" command and do not exit
the search without being told so, even if PLY_MAX has been reached.
Patch is quite invasive because it cleanups some hacks used
by fixed depth and fixed nodes modes, mainly during benchmarks.
Bug found by Pascal Georges.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Patch from Joona with extension to benchmark and inclusion
of Depth(0) moves generation by me.
Note that to test also qsearch and in particulary checks
generations a change in the end condition is needed.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Add a new argument to bench to specify the name of the
file where timing information will be saved for each
benchmark session.
This argument is optional, if not specified file will
not be created.
Original patch by Heinz van Saanen
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Under MS Visual C++ debug window always unconditionally closes
when program exits, this is bad because we want to read results before.
So limit this kludge on Windows only.
Original patch by Heinz van Saanen.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Centralize in a single object all the global resources
management and avoid a bunch of sparse exit() calls.
This is more reliable and clean and more stick to C++ coding
practices.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This patch modifies think() signature to accept
also opponent time. This is needed for future
changes to time managment.
Still no functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba