Trace number 2082018

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
Mistral 1.545UNSAT 0.277957 0.316933

DiagnosticValue
ASSIGNMENTS0
CHECKS1
NODES0

General information on the benchmark

Namecsp/super-queens/
normalized-super-queens-12.xml
MD5SUM12cac64112c90184707842af1dca4fb5
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.277957
Satisfiable
(Un)Satisfiability was proved
Number of variables100
Number of constraints3725
Maximum constraint arity2
Maximum domain size50
Number of constraints which are defined in extension0
Number of constraints which are defined in intension3725
Global constraints used (with number of constraints)

Solver Data 

0.00/0.05	c mistral version 1.545
0.15/0.26	s UNSATISFIABLE
0.15/0.26	d CHECKS 1
0.15/0.26	d ASSIGNMENTS 0
0.15/0.26	d NODES 0 BACKTRACKS 0 FAILURES 0 RUNTIME -1.11131e-18 TOTALTIME 0.21 NODES/s -0 CHECKS/s -8.99841e+17

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2082018-1247374517/watcher-2082018-1247374517 -o /tmp/evaluation-result-2082018-1247374517/solver-2082018-1247374517 -C 1800 -W 2000 -M 900 /home/evaluation/evaluation/libc32/lib/ld-linux.so.2 ./xsolve HOME/instance-2082018-1247374517.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 921600 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 972800 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.95 1.99 1.99 4/80 22511
/proc/meminfo: memFree=1625336/2055920 swapFree=4192812/4192956
[pid=22511] ppid=22509 vsize=2224 CPUtime=0
/proc/22511/stat : 22511 (ld-linux.so.2) R 22509 22511 17808 0 -1 4194304 47 0 1 0 0 0 0 0 18 0 1 0 24514296 2277376 33 996147200 1448431616 1448550632 4294956208 18446744073709551615 1448525156 0 0 4096 0 0 0 0 17 0 0 0
/proc/22511/statm: 556 33 25 29 0 4 0

[startup+0.0335609 s]
/proc/loadavg: 1.95 1.99 1.99 4/80 22511
/proc/meminfo: memFree=1625336/2055920 swapFree=4192812/4192956
[pid=22511] ppid=22509 vsize=3384 CPUtime=0
/proc/22511/stat : 22511 (ld-linux.so.2) D 22509 22511 17808 0 -1 4194304 57 0 2 0 0 0 0 0 18 0 1 0 24514296 3465216 43 996147200 1448431616 1448550632 4294956208 18446744073709551615 1448531911 0 0 4096 0 18446744071563479169 0 0 17 1 0 0
/proc/22511/statm: 846 43 31 29 0 5 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 3384

[startup+0.101579 s]
/proc/loadavg: 1.95 1.99 1.99 4/80 22511
/proc/meminfo: memFree=1625336/2055920 swapFree=4192812/4192956
[pid=22511] ppid=22509 vsize=6148 CPUtime=0.06
/proc/22511/stat : 22511 (ld-linux.so.2) R 22509 22511 17808 0 -1 4194304 728 0 7 0 5 1 0 0 18 0 1 0 24514296 6295552 714 996147200 1448431616 1448550632 4294956208 18446744073709551615 4157381179 0 0 4096 0 0 0 0 17 0 0 0
/proc/22511/statm: 1537 715 378 29 0 352 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 6148

[startup+0.301613 s]
/proc/loadavg: 1.95 1.99 1.99 4/80 22511
/proc/meminfo: memFree=1625336/2055920 swapFree=4192812/4192956
[pid=22511] ppid=22509 vsize=19832 CPUtime=0.25
/proc/22511/stat : 22511 (ld-linux.so.2) R 22509 22511 17808 0 -1 4194304 4198 0 8 0 22 3 0 0 20 0 1 0 24514296 20307968 4185 996147200 1448431616 1448550632 4294956208 18446744073709551615 134619135 0 0 4096 0 0 0 0 17 0 0 0
/proc/22511/statm: 4958 4185 450 29 0 3773 0
Current children cumulated CPU time (s) 0.25
Current children cumulated vsize (KiB) 19832

Solver just ended. Dumping a history of the last processes samples

Child status: 0
Real time (s): 0.316933
CPU time (s): 0.277957
CPU user time (s): 0.241963
CPU system time (s): 0.035994
CPU usage (%): 87.7022
Max. virtual memory (cumulated for all children) (KiB): 19832

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.241963
system time used= 0.035994
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4199
page faults= 8
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 38
involuntary context switches= 28

runsolver used 0.003999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node71 at 2009-07-12 06:55:17
IDJOB=2082018
IDBENCH=57521
IDSOLVER=769
FILE ID=node71/2082018-1247374517
PBS_JOBID= 9507052
Free space on /tmp= 66392 MiB

SOLVER NAME= Mistral 1.545
BENCH NAME= CPAI08/csp/super-queens/normalized-super-queens-12.xml
COMMAND LINE= /home/evaluation/evaluation/libc32/lib/ld-linux.so.2 ./xsolve BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2082018-1247374517/watcher-2082018-1247374517 -o /tmp/evaluation-result-2082018-1247374517/solver-2082018-1247374517 -C 1800 -W 2000 -M 900  /home/evaluation/evaluation/libc32/lib/ld-linux.so.2 ./xsolve HOME/instance-2082018-1247374517.xml

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 12cac64112c90184707842af1dca4fb5
RANDOM SEED=1829350222

node71.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.222
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.222
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1625816 kB
Buffers:         15820 kB
Cached:          90940 kB
SwapCached:          0 kB
Active:         349256 kB
Inactive:        32572 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1625816 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2228 kB
Writeback:           0 kB
Mapped:         292936 kB
Slab:            32880 kB
Committed_AS:   941220 kB
PageTables:       2364 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66392 MiB
End job on node71 at 2009-07-12 06:55:18