]>
git.sesse.net Git - stockfish/log
Marco Costalba [Sat, 30 Oct 2010 14:28:33 +0000 (15:28 +0100)]
Allow razoring after a null move
After 8322 games on Russian Cluster
Mod- Orig: 1341 - 1281 - 5700 ELO +2 (+- 3) LOS 75%
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Joona Kiiski [Tue, 30 Nov 2010 12:46:41 +0000 (14:46 +0200)]
Prune all negative see moves at low depths
After 2036 games Mod- Orig:
381 - 278 - 1377 ELO +17 (+- 6.2) LOS 99%
One of the biggest increases ever !
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 28 Nov 2010 16:05:49 +0000 (17:05 +0100)]
Fix bestmove output in multi PV case
When MultiPV > 1, always take bestmove from the RootMoveList
(and don't bother with a ponder move). Without that the bestmove
is most probably incorrect.
Patch from Peter Petrov.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 22 Nov 2010 17:40:36 +0000 (18:40 +0100)]
Fix 'generation' type to uint8_t
When we store this value in TT we cut this to 9 bits,
so we need a smaller variable otherwise comparisons
like:
replace->generation() == generation
Are always false if generation is bigger then the maximum
TT storable value.
This fixes a very nasty and difficult to spot bug (2 weeks for
regression hunting).
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Fri, 19 Nov 2010 06:59:51 +0000 (07:59 +0100)]
Revert sleeping threads
Revert
141caf1d5b64 +
c59efc53c9
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 23 Nov 2010 06:00:30 +0000 (07:00 +0100)]
Revert "Allow split point master to sleep (take 2)"
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 23 Nov 2010 08:09:15 +0000 (09:09 +0100)]
We don't need a stringstream in buildKey()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 22 Nov 2010 13:55:56 +0000 (14:55 +0100)]
Retire Application class
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>
Marco Costalba [Mon, 22 Nov 2010 10:50:58 +0000 (11:50 +0100)]
Retire piece.cpp
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 21 Nov 2010 22:28:17 +0000 (23:28 +0100)]
UCI options names should not be case sensitive
Correctly handle uci option names in a case insensitive way.
Alos fix some indentation while there.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 21 Nov 2010 13:23:16 +0000 (14:23 +0100)]
Retire "New Game" UCI option
Was introduced by
403db5a6e9f
on 1/12/2009 to correctly handle "loose on time"
LSN filtering functionality, but is now unused.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 21 Nov 2010 12:06:53 +0000 (13:06 +0100)]
Remove hardcoded 16 from benchmark default positions size
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 21 Nov 2010 11:43:16 +0000 (12:43 +0100)]
Micro-optimize pl_move_is_legal()
This L1/L2 optimization has an incredible +4.7% speedup
in perft test where this function is the most time consumer.
Verified a speed up also in normal bench, although smaller.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 20 Nov 2010 13:23:28 +0000 (14:23 +0100)]
Store "true" and "false" in bool options
UCI protocol uses "true" and "false" for check and button types,
so store that values instead of "1" and "0", this simplifies a
bit the code.
Also a bit strictier option's type checking in debug mode.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 20 Nov 2010 10:48:04 +0000 (11:48 +0100)]
Debug counters don't need to be global
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Fri, 19 Nov 2010 16:03:44 +0000 (17:03 +0100)]
Small touches to engine_name()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 16 Nov 2010 18:28:09 +0000 (19:28 +0100)]
Use occupied_squares() in book_key()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 16 Nov 2010 08:42:12 +0000 (09:42 +0100)]
Rearrange pawn moves generation
This patch greatly cleanups generation of pawn moves but
we change the order in which moves are generated so there is
a change in functionality, but not in perft.
The only real functionality change is that now when type == CHECK
we generate knight underpromotion captures only if give check and
not always as before.
Perft is 2% faster and fully verified.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 16 Nov 2010 07:51:07 +0000 (08:51 +0100)]
Introduce generate_promotions()
A bit ugly to guarantee no functional change.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 15 Nov 2010 15:27:05 +0000 (16:27 +0100)]
Simplify generate_pawn_captures()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 15 Nov 2010 12:49:13 +0000 (13:49 +0100)]
Cleanup Bioskey()
And rename in dataAvailable()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 8 Nov 2010 19:49:40 +0000 (20:49 +0100)]
Let bench to have full defaults arguments
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>
Marco Costalba [Mon, 8 Nov 2010 14:30:12 +0000 (15:30 +0100)]
Various cleanup in book.cpp
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 8 Nov 2010 10:08:01 +0000 (11:08 +0100)]
Let benchmark to default to depth 12
And also simplify a lot the code.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 8 Nov 2010 08:44:28 +0000 (09:44 +0100)]
Move PieceValue[] and SlidingArray[] where they belong
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 7 Nov 2010 22:45:13 +0000 (23:45 +0100)]
Allow split point master to sleep (take 2)
Let to sleep even split point master, it will be waken
up by its slaves when they return from the search.
This time let it be enabled by an UCI option, so
people is free to test it on their Hyper Thread box.
Option is disabled by default.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 7 Nov 2010 12:41:21 +0000 (13:41 +0100)]
Use namespace in position.cpp
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 7 Nov 2010 12:22:13 +0000 (13:22 +0100)]
Retire uci.h and benchmark.h
Moved the single prototipes where are needed.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 7 Nov 2010 12:12:48 +0000 (13:12 +0100)]
Object OpeningBook doen't need to be global
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 7 Nov 2010 11:33:17 +0000 (12:33 +0100)]
Make rkiss seed deterministic
Search at fixed depth with one thread must be
reproducible so remove randomess from time().
Also better license description.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 7 Nov 2010 11:11:01 +0000 (12:11 +0100)]
Let rkiss.h to follow SF coding style
Fix also Makefile after mersenne.cpp has been removed
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 7 Nov 2010 10:13:17 +0000 (11:13 +0100)]
Use Heinz's RKiss instead of marsenne
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Fri, 5 Nov 2010 12:59:48 +0000 (13:59 +0100)]
Fix an off by one bug in print_uci_options()
Last option was not printed.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Fri, 5 Nov 2010 12:53:13 +0000 (13:53 +0100)]
Retire bitbase.h
Moved the only prototipe where is needed.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Thu, 4 Nov 2010 07:03:27 +0000 (08:03 +0100)]
Rewrite options handling in an object oriented fashion
Big rewrite and about 100 lines removed.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Wed, 3 Nov 2010 08:32:14 +0000 (09:32 +0100)]
Retire push_button() and button_was_pressed()
Directly access the underlying bool option.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 1 Nov 2010 12:16:32 +0000 (13:16 +0100)]
Prefer int to uint8_t when possible
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 1 Nov 2010 11:17:54 +0000 (12:17 +0100)]
Add "mingw" compiler to Makefile
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 1 Nov 2010 10:44:46 +0000 (11:44 +0100)]
Fix MinGW warnings
I finally got SF to compile under MinGW (after adding pthread libraries)
and here are the fixed warnings.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 31 Oct 2010 10:37:43 +0000 (11:37 +0100)]
Allocate RootPosition on the stack
And pass it as an argument.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 31 Oct 2010 09:55:28 +0000 (10:55 +0100)]
Update nodes after a do_move()
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>
Marco Costalba [Sat, 30 Oct 2010 17:44:34 +0000 (18:44 +0100)]
Fix some icc's "statement is unreachable" warnings
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 30 Oct 2010 17:18:48 +0000 (18:18 +0100)]
Move moveCount update near the SpNode case
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 30 Oct 2010 14:22:10 +0000 (15:22 +0100)]
Introduce and use TranspositionTable::refresh()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 30 Oct 2010 13:22:57 +0000 (14:22 +0100)]
Use margins[] array in evaluate
It will be used by future patches.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 30 Oct 2010 11:31:42 +0000 (12:31 +0100)]
More readable search/qsearch dispatch
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 24 Oct 2010 08:39:33 +0000 (10:39 +0200)]
Fix last leak detected by Valgrind
This was subtle and google was my friend.
The leak was in _dl_allocate_tls called by pthread_create() and
is due to the fact that threads are created in joinable state so that
once terminated are not freed. To make the thread to release
its resources upon termination we should set them in detached state.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 24 Oct 2010 08:15:31 +0000 (10:15 +0200)]
Fix a memcpy() warning under Valgrind
Fix warning: "Source and destination overlap in memcpy"
This happens when we call multiple time do_move() with the
same state, for instance when we don't need to undo the move.
This is what valgrind docs say:
You don't want the two blocks to overlap because one of them could
get partially overwritten by the copying.
You might think that Memcheck is being overly pedantic reporting this
in the case where 'dst' is less than 'src'. For example, the obvious way
to implement memcpy() is by copying from the first byte to the last.
However, the optimisation guides of some architectures recommend copying
from the last byte down to the first. Also, some implementations of
memcpy() zero 'dst' before copying, because zeroing the destination's
cache line(s) can improve performance.
In addition, for many of these functions, the POSIX standards have wording
along the lines "If copying takes place between objects that overlap,
the behavior is undefined." Hence overlapping copies violate the standard.
The moral of the story is: if you want to write truly portable code, don't
make any assumptions about the language implementation.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 24 Oct 2010 08:51:49 +0000 (09:51 +0100)]
Revert previous patch
It seems we have a speed regression under Linux, anyhow
commit and revert to leave some documentation in case we
want to try again in the future.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Thu, 21 Oct 2010 06:46:38 +0000 (07:46 +0100)]
Allow split point master to sleep
Let to sleep even split point master, it will be waken up
by its slaves when they return from the search.
With this patch we get maximum HT speedup
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 23 Oct 2010 06:52:17 +0000 (07:52 +0100)]
Re-add "Pass evalMargin through SearchStack as eval"
It has more sense to treat the two evaluation metrics
in the same way.
As a side effect now we use the correct eval margin when
pruning in a SplitPoint node.
No functional change in single thread.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 23 Oct 2010 06:38:48 +0000 (07:38 +0100)]
Finally retire sp_search()
Fix the movcount updating bug and let search() to completely
subsititute sp_search().
No functional change even with fakes split.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 18 Oct 2010 02:29:58 +0000 (04:29 +0200)]
Temporary restore old sp_search()
There is a bug in the conversion that is triggered when testing
with faked split and that I missed somehow :-(
To allow proper testing on cluster restore old sp_search()
until I don't fiugre up what's happened.
Restored to be functional equivalent to old behaviour both in
single thread and in faked split.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 10:54:44 +0000 (11:54 +0100)]
Revert "Pass evalMargin through SearchStack as eval"
Restore full no functional change also in Faked Split mode.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 12:12:12 +0000 (13:12 +0100)]
Don't wake up /sleep threads in think() anymore
When entering and exiting from think() we don't need any special
wake up / sleeping code because we want available threads to keep
sleeping.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 10:23:59 +0000 (11:23 +0100)]
Enable sleeping of available threads
This simple patch has devastating consequences ;-)
Now an available thread goes to sleep and is waked up after
being allocated.
This patch allows Stockfish to dramatically increase performances
on HyperThreading systems.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 10:01:55 +0000 (11:01 +0100)]
Use fast SRWLOCK locks under Windows
They are fast and also have the same semantic of Linux ones.
This allow to simplify the code and especially to use
SleepConditionVariableSRW() to wait on a condition releaseing the lock,
this has the same semantic as pthread_cond_wait().
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 08:34:23 +0000 (09:34 +0100)]
Remove some ifdef from wake_sleeping_thread()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 08:03:39 +0000 (09:03 +0100)]
Retire put_threads_to_sleep()
Obsoleted by previous patches.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 07:57:20 +0000 (08:57 +0100)]
Retire THREAD_SLEEPING and use THREAD_AVAILABLE instead
This is a prerequisite for future work and anyhow removes
a state flag, so it is good anyhow.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 07:38:52 +0000 (08:38 +0100)]
Retire AllThreadsShouldSleep flag
It is redundant and complicates the already complicated
SMP code for no reason.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 07:16:46 +0000 (08:16 +0100)]
Destroy wait conditions before exiting
We already do this for locks. Also rename SitIdleEvent
in WaitCond to be uniform with Lunix naming.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 17 Oct 2010 06:55:57 +0000 (07:55 +0100)]
Change thread API to use one wait condition per thread
This is the native way done in Windows and we will use it
for future work, so change Linux to do the same.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 14:24:42 +0000 (15:24 +0100)]
Do not shadow SplitPoint struct with search() parameter
Also retire move_is_killer() is called only from one place.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 11:52:01 +0000 (13:52 +0200)]
Fixed some warnings when using -Weffc++ gcc option
Plus some other icc warnings popped up with new and strictier
compile options.
No functional and speed change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 11:19:44 +0000 (13:19 +0200)]
Fix a shadowed variable warning under icc
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 11:09:49 +0000 (12:09 +0100)]
Retire now obsoleted do_sp_search() trampoline code
We can call search() directly from idle_loop()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 10:54:44 +0000 (11:54 +0100)]
Pass evalMargin through SearchStack as eval
It has more sense to treat the two evaluation metrics
in the same way.
As a side effect now we use the correct eval margin when
pruning in a SplitPoint node.
No functional change in single thread.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 10:24:03 +0000 (11:24 +0100)]
Unify sp_search() and search() step 3
Remove old sp_search() code.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 16 Oct 2010 09:01:45 +0000 (10:01 +0100)]
Unify sp_search() and search() step 2
Modify search() to be able to handle split points
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 12 Oct 2010 08:28:25 +0000 (10:28 +0200)]
Unify sp_search() and search() step 1
Rewrite sp_search() to have same signature of search()
This is the first prerequistite step toward unification.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 12 Oct 2010 07:54:01 +0000 (09:54 +0200)]
Pass moveCount by value in split()
Actually it is an error to update back moveCount value after split()
because it is used in update_history() to access movesSearched[]
array. But becasue this vector is not updated in the split point
we end up with an access of stale data.
Bug has been hidden til now because we 'forgot' to update
moveCount before returning from split().
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 12 Oct 2010 08:14:40 +0000 (10:14 +0200)]
Sync sp_search() with search()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 12 Oct 2010 07:06:33 +0000 (09:06 +0200)]
Better document some threads functions
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 11 Oct 2010 18:56:07 +0000 (19:56 +0100)]
Document an assert in idle_loop()
Thanks to Bruno Causse for the clarification.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 10 Oct 2010 08:04:09 +0000 (09:04 +0100)]
Use VALUE_DRAW instead of VALUE_ZERO where better
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 10 Oct 2010 06:56:07 +0000 (08:56 +0200)]
Use do_move_bb() in move_attacks_square()
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 10 Oct 2010 05:55:42 +0000 (07:55 +0200)]
Another cleanup in evaluate_pawns()
Suggested by Marek Kwiatkowski.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 9 Oct 2010 14:04:24 +0000 (15:04 +0100)]
Micro optimize open files calculation
Committed mostly because is also a cleanup...
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 9 Oct 2010 12:20:49 +0000 (13:20 +0100)]
Rearrange pawn penalities arrays
A clean up that is also a prerequisite for next patches.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 9 Oct 2010 12:05:58 +0000 (13:05 +0100)]
Small codestyle touches
Mostly suggested by Justin (UncombedCoconut), the 0ULL -> 0 conversion
is mine.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Thu, 7 Oct 2010 02:55:08 +0000 (03:55 +0100)]
Properly set to zero stuff returned by 'new'
Language guarantees that c'tor is called, but without any c'tor
it happens to work by accident because OS zeroes out the freshly
allocated pages. The problem is that if I deallocate and allocate
again, the second time pages are no more newly come by the OS and
so could contain stale info.
A practical case could be if we change TT size or numbers of
threads on the fly while already running.
Bug spotted by Justin Blanchard.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Wed, 6 Oct 2010 07:11:27 +0000 (09:11 +0200)]
Retire updateKingTables[]
Suggested by Marek Kwiatkowski.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 5 Oct 2010 21:22:44 +0000 (22:22 +0100)]
Skip ei.kingZone[] initialization together with king safety
Another microptimization by Marek Kwiatkowski.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 5 Oct 2010 21:10:42 +0000 (22:10 +0100)]
Skip an useless compare in space evaluation
Spotted by Marek Kwiatkowski.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 5 Oct 2010 18:40:49 +0000 (19:40 +0100)]
Restore development version
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 5 Oct 2010 07:23:52 +0000 (09:23 +0200)]
Stockfish 1.9.1
Fix release to workaround chess960 on some GUIs
Signature is:
stockfish bench 128 1 12 default depth
Node counts:
10914593
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Tue, 5 Oct 2010 07:19:40 +0000 (09:19 +0200)]
Fix broken chess960 under Shredder GUI
We need to add a dummy option anyway to make GUIs happy.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Mon, 4 Oct 2010 09:45:04 +0000 (11:45 +0200)]
Rewrite bit counting functions
Get rid of macros and use templates instead,
this is safer and allows us fix the warning:
ISO C++ forbids braced-groups within expressions
That broke compilation with -pedantic flag under
gcc and POPCNT enabled.
No functional and no performance change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 3 Oct 2010 13:37:50 +0000 (14:37 +0100)]
Remove -pedantic option
Breaks current POPCNT code.
Perhaps we will readd with a proper fix...
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sun, 3 Oct 2010 10:10:08 +0000 (11:10 +0100)]
Use special handling for promotions in move_is_legal()
Simplifies a bit the code and the common case too.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 2 Oct 2010 17:57:46 +0000 (18:57 +0100)]
Fix an obsoleted NO_PIECE_TYPE in a comment
Spotted by Ralph Stoesser.
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 2 Oct 2010 13:36:43 +0000 (14:36 +0100)]
Restore development version
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 2 Oct 2010 09:46:18 +0000 (11:46 +0200)]
Increase warning level
Both under gcc and icc: sf compiles with no warnings !
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 2 Oct 2010 08:55:10 +0000 (09:55 +0100)]
Stockfish 1.9
Signature is:
stockfish bench 128 1 12 default depth
Node counts:
10914593
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Joona Kiiski [Sat, 3 Jul 2010 21:38:49 +0000 (00:38 +0300)]
Less aggressive move count based futility pruning
This patch from Joona greatly reduces move count pruning,
below is the old and new move count limits starting from
ONE_PLY with half-play increment:
Old: 4,5,5,5, 7, 7,11,11,11,19,19,19,35,35
New: 4,5,7,9,12,15,19,23,28,33,39,45,52,59
Surprisingly results are even a bit better at a quite
fast time control.
After 5260 games at 30"+0.1
Mod - Orig: 864 - 806 - 3590 ELO +3 (+- 3.8)
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 25 Sep 2010 10:21:24 +0000 (11:21 +0100)]
Fix handling of 50 move rule and remove a fixme
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Sat, 25 Sep 2010 10:12:55 +0000 (11:12 +0100)]
Shrink OutpostBonus[] definition
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Fri, 24 Sep 2010 08:33:16 +0000 (10:33 +0200)]
Simplify scale factors implementation
No functional change.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Marco Costalba [Fri, 24 Sep 2010 07:43:48 +0000 (09:43 +0200)]
Rename no_mob_area in mobilityArea
It is the correct name.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>