Arasan 11.3

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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Arasan 11.3

Post by bob »

krazyken wrote:
jdart wrote:
krazyken wrote:It seems I can't get a stable 64-bit build. But 32-bit works on Mac.
If you're building a 64-bit target on MacOS, that is not something I have tried.

--Jon
Yes, That's what I tried. It builds, but will randomly hang and/or seg fault. If it is something you wish to investigate further, I can get you crash reports and/or ssh access to a Mac.
what happens if you add -Wall (gcc) or whatever for the compiler you use. Do you get any warnings? There can be some nice quirks when things go from 32 bits to 64 bits without warning, as it is easy to use int, where int is not big enough for a pointer in 64 bits, and such... Had a few of those when I first tested on a Cray many years ago.
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Arasan 11.3

Post by bob »

jdart wrote:I'll put it on my list to investigate. I have to borrow my daughter's Mac as I don't have a regular Mac dev machine.

--Jon
If you want to send me the code (if you have released it) I can compile it on a 64 bit box and send any warnings back to you, or fixes if I have time to make it work...
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krazyken

Re: Arasan 11.3

Post by krazyken »

using Apple gcc 4.2.1
default compile flags in your Makefile (without the -march):

Code: Select all

g++ -O3 -finline-functions -fno-rtti -fno-enforce-eh-specs   -Wall -m64 -D_MAC -DSMP
warnings:

Code: Select all

log.cpp:2: warning: ignoring #pragma optimize 
log.cpp: In member function 'void Log::add_move(Board&, const Move&, const char*, const Statistics*, BookInfo*, int)':
log.cpp:176: warning: comparison between 'const enum StateType' and 'enum Log::GameResult'
search.cpp: In member function 'int Search::checkTime(const Board&, int)':
search.cpp:479: warning: comparison between signed and unsigned integer expressions
search.cpp: In member function 'int Search::calcExtensions(const Board&, NodeInfo*, NodeInfo*, CheckStatusType, int, int, const Move&)':
search.cpp:1701: warning: comparison between 'enum PieceType' and 'enum Piece'
search.cpp: In member function 'int Search::search()':
search.cpp:1729: warning: comparison between signed and unsigned integer expressions
legal.h: At global scope:
legal.h:15: warning: 'int legalMove(const Board&, Move)' defined but not used
egtb.cpp: In function 'void* PvMalloc(size_t)':
egtb.cpp:354: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
egtb.cpp: In function 'void VInitEnumerations()':
egtb.cpp:1290: warning: format '%d' expects type 'int', but argument 3 has type 'ULONG'
egtb.cpp:1294: warning: format '%d' expects type 'int', but argument 3 has type 'ULONG'
egtb.cpp:1301: warning: format '%d' expects type 'int', but argument 4 has type 'ULONG'
egtb.cpp:1308: warning: format '%d' expects type 'int', but argument 4 has type 'ULONG'
egtb.cpp:1318: warning: format '%d' expects type 'int', but argument 5 has type 'ULONG'
egtb.cpp:1327: warning: format '%d' expects type 'int', but argument 5 has type 'ULONG'
egtb.cpp:1330: warning: format '%d' expects type 'int', but argument 2 has type 'long unsigned int'
egtb.cpp:4503: warning: 'TB_CRC_CHECK' initialized and declared 'extern'
egtb.cpp: In function 'int FCheckExtentExistance(char*, int, color, int)':
egtb.cpp:6323: warning: unused variable 'fWasError'
egtb.cpp:6324: warning: unused variable 'block'
egtb.cpp:6325: warning: unused variable 'rgbBuffer'
tbdecode.h: At global scope:
tbdecode.h:798: warning: 'int comp_tell_blocks(decode_info*)' defined but not used
egtb.cpp:6117: warning: 'int TbtProbeTable(int, color, INDEX)' defined but not used
makebook.cpp: In function 'int main(int, char**)':
makebook.cpp:627: warning: comparison between signed and unsigned integer expressions
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krazyken

Re: Arasan 11.3

Post by krazyken »

Source is available from link in the first post of the thread.
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Arasan 11.3

Post by bob »

krazyken wrote:using Apple gcc 4.2.1
default compile flags in your Makefile (without the -march):

Code: Select all

g++ -O3 -finline-functions -fno-rtti -fno-enforce-eh-specs   -Wall -m64 -D_MAC -DSMP
warnings:

Code: Select all

log.cpp:2: warning: ignoring #pragma optimize 
log.cpp: In member function 'void Log::add_move(Board&, const Move&, const char*, const Statistics*, BookInfo*, int)':
log.cpp:176: warning: comparison between 'const enum StateType' and 'enum Log::GameResult'
search.cpp: In member function 'int Search::checkTime(const Board&, int)':
search.cpp:479: warning: comparison between signed and unsigned integer expressions
search.cpp: In member function 'int Search::calcExtensions(const Board&, NodeInfo*, NodeInfo*, CheckStatusType, int, int, const Move&)':
search.cpp:1701: warning: comparison between 'enum PieceType' and 'enum Piece'
search.cpp: In member function 'int Search::search()':
search.cpp:1729: warning: comparison between signed and unsigned integer expressions
legal.h: At global scope:
legal.h:15: warning: 'int legalMove(const Board&, Move)' defined but not used
egtb.cpp: In function 'void* PvMalloc(size_t)':
egtb.cpp:354: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
egtb.cpp: In function 'void VInitEnumerations()':
egtb.cpp:1290: warning: format '%d' expects type 'int', but argument 3 has type 'ULONG'
egtb.cpp:1294: warning: format '%d' expects type 'int', but argument 3 has type 'ULONG'
egtb.cpp:1301: warning: format '%d' expects type 'int', but argument 4 has type 'ULONG'
egtb.cpp:1308: warning: format '%d' expects type 'int', but argument 4 has type 'ULONG'
egtb.cpp:1318: warning: format '%d' expects type 'int', but argument 5 has type 'ULONG'
egtb.cpp:1327: warning: format '%d' expects type 'int', but argument 5 has type 'ULONG'
egtb.cpp:1330: warning: format '%d' expects type 'int', but argument 2 has type 'long unsigned int'
egtb.cpp:4503: warning: 'TB_CRC_CHECK' initialized and declared 'extern'
egtb.cpp: In function 'int FCheckExtentExistance(char*, int, color, int)':
egtb.cpp:6323: warning: unused variable 'fWasError'
egtb.cpp:6324: warning: unused variable 'block'
egtb.cpp:6325: warning: unused variable 'rgbBuffer'
tbdecode.h: At global scope:
tbdecode.h:798: warning: 'int comp_tell_blocks(decode_info*)' defined but not used
egtb.cpp:6117: warning: 'int TbtProbeTable(int, color, INDEX)' defined but not used
makebook.cpp: In function 'int main(int, char**)':
makebook.cpp:627: warning: comparison between signed and unsigned integer expressions
Nothing really stands out at first pass. A few warnings are odd (signed vs unsigned comparisons for example) but nothing noteworthy. However, knowing GCC, that doesn't mean a lot. It is the things it _doesn't_ notice that can be problematic...
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jdart
Posts: 4406
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Arasan 11.3

Post by jdart »

I have a x64 Linux install with gcc 4 so I've seen most of these before.

It sounds like the issue was, it compiled on MacOS x64 but didn't run. So the compile warnings may not be the issue.

--Jon
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Arasan 11.3

Post by bob »

jdart wrote:I have a x64 Linux install with gcc 4 so I've seen most of these before.

It sounds like the issue was, it compiled on MacOS x64 but didn't run. So the compile warnings may not be the issue.

--Jon
I agree. The problem is usually something the compiler didn't quite grasp as illegal. Hasn't happened recently, but there have been plenty of gcc versions that would simply break crafty and cause it to either produce wrong results, or more commonly, crash.
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krazyken

Re: Arasan 11.3

Post by krazyken »

got a backtrace if it is of help got this crash from running an epd test. Also I note with the EPD test the times seem to be way off, I tell it to run for 20 secs per position, and it spends about 3 on each one reporting that it had gone 20 secs.

Code: Select all

Process:         arasanx [10538]
Path:            ./arasanx
Identifier:      arasanx
Version:         ??? (???)
Code Type:       X86-64 (Native)
Parent Process:  bash [547]

Date/Time:       2009-03-26 23:54:57.339 -0600
OS Version:      Mac OS X 10.5.6 (9G55)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000750
Crashed Thread:  2

Thread 0:
0   libSystem.B.dylib             	0x00007fff83c0984d szone_free + 2057
1   arasanx                       	0x000000010000f64f Board::operator=(Board const&) + 63 (board.cpp:163)
2   arasanx                       	0x00000001000303ba Search::maybeSplit(Board const&, NodeInfo*, int, int) + 666 (search.cpp:2900)
3   arasanx                       	0x000000010002ec3a Search::search() + 4458 (search.cpp:2242)
4   arasanx                       	0x000000010002f899 Search::searchSMP(ThreadInfo*) + 889 (search.h:245)
5   arasanx                       	0x0000000100030444 Search::maybeSplit(Board const&, NodeInfo*, int, int) + 804 (search.cpp:2987)
6   arasanx                       	0x000000010002ec3a Search::search() + 4458 (search.cpp:2242)
7   arasanx                       	0x0000000100030979 RootSearch::ply0_search(RootMoveGenerator&, int, int, int, int, unsigned long long*, int) + 1305 (search.h:245)
8   arasanx                       	0x0000000100031386 RootSearch::ply0_search(unsigned long long*, int) + 822 (search.cpp:634)
9   arasanx                       	0x00000001000329b3 SearchController::findBestMove(Board const&, SearchType, int, int, int, int, int, Statistics&, TalkLevel, unsigned long long*, int) + 275 (search.cpp:267)
10  arasanx                       	0x00000001000066d0 __ZL7do_testSs + 3072
11  arasanx                       	0x0000000100008bcc __ZL10do_commandPKcR5Board + 1308
12  arasanx                       	0x000000010000d365 main + 1205 (arasanx.cpp:2752)
13  arasanx                       	0x0000000100000cf4 start + 52

Thread 1:
0   libSystem.B.dylib             	0x00007fff83cae002 semop + 10
1   libSystem.B.dylib             	0x00007fff83c30dcb _pthread_start + 316
2   libSystem.B.dylib             	0x00007fff83c30c8d thread_start + 13

Thread 2 Crashed:
0   arasanx                       	0x000000010002f5c3 Search::searchSMP(ThreadInfo*) + 163 (types.h:181)
1   arasanx                       	0x000000010003bfa8 __ZL10parkingLotPv + 72
2   libSystem.B.dylib             	0x00007fff83c30dcb _pthread_start + 316
3   libSystem.B.dylib             	0x00007fff83c30c8d thread_start + 13

Thread 3:
0   libSystem.B.dylib             	0x00007fff83cae002 semop + 10
1   libSystem.B.dylib             	0x00007fff83c30dcb _pthread_start + 316
2   libSystem.B.dylib             	0x00007fff83c30c8d thread_start + 13

Thread 4:
0   libSystem.B.dylib             	0x00007fff83cae002 semop + 10
1   libSystem.B.dylib             	0x00007fff83c30dcb _pthread_start + 316
2   libSystem.B.dylib             	0x00007fff83c30c8d thread_start + 13

Thread 5:
0   libSystem.B.dylib             	0x00007fff83cae002 semop + 10
1   libSystem.B.dylib             	0x00007fff83c30dcb _pthread_start + 316
2   libSystem.B.dylib             	0x00007fff83c30c8d thread_start + 13

Thread 6:
0   libSystem.B.dylib             	0x00007fff83cae002 semop + 10
1   libSystem.B.dylib             	0x00007fff83c30dcb _pthread_start + 316
2   libSystem.B.dylib             	0x00007fff83c30c8d thread_start + 13

Thread 7:
0   arasanx                       	0x000000010002032a Scoring::positionalScore(Board const&, int, int) + 666 (scoring.cpp:1808)
1   arasanx                       	0x000000010002c759 Search::qsearch_no_check(int, int) + 217 (search.cpp:1236)
2   arasanx                       	0x000000010002c678 Search::quiesce(int, int) + 344 (search.cpp:1127)
3   arasanx                       	0x000000010002f4ed Search::search() + 6685 (search.h:254)
4   arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
5   arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
6   arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
7   arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
8   arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
9   arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
10  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
11  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
12  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
13  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
14  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
15  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
16  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
17  arasanx                       	0x000000010002e77c Search::search() + 3244 (search.h:254)
18  arasanx                       	0x000000010002fea3 Search::searchSMP(ThreadInfo*) + 2435 (search.h:368)
19  arasanx                       	0x000000010003bfa8 __ZL10parkingLotPv + 72
20  libSystem.B.dylib             	0x00007fff83c30dcb _pthread_start + 316
21  libSystem.B.dylib             	0x00007fff83c30c8d thread_start + 13

Thread 2 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000750  rbx: 0x0000000109196000  rcx: 0x00007fff83cae002  rdx: 0x00000001003094c0
  rdi: 0x00000001091982a8  rsi: 0x00000001003094c0  rbp: 0x0000000109193ec0  rsp: 0x0000000109193de0
   r8: 0x0000000000000008   r9: 0x0000000000000000  r10: 0x00007fff83cae02a  r11: 0x0000000000000296
  r12: 0x000000010979b568  r13: 0x0000000100309320  r14: 0x0000000100000001  r15: 0x000000010919f568
  rip: 0x000000010002f5c3  rfl: 0x0000000000010206  cr2: 0x0000000000000750
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sje
Posts: 4675
Joined: Mon Mar 13, 2006 7:43 pm

Re: Arasan 11.3

Post by sje »

1) Missing an signed/unsigned conversion bug once cost me two hours of debugging time, so I always have the compiler check for these.

2) I turn on every possible check (more than just -Wall) that doesn't trigger false warnings from system header files.

3) Instead of -O3, I'd use -O0 when debugging crashes. Also,the g++v4.3 optimizer is busted on Linux, at least with the -O2/-O3 settings.
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jdart
Posts: 4406
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Arasan 11.3

Post by jdart »

This is the part of the code that is copying the current board prior to starting a search in another thread. It looks like it is the part that's deleting and then re-allocating the repetition list.

Could be a bug but I've never had trouble with this on other platforms. Note that the array being freed should be null and deleting a null pointer is legal in C++ but the compiler may not know that ..

There is a newer gcc version (4.2) available for MacOS if you want to try that.

--Jon
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