Trace number 2082019

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
bpsolver 09UNSAT 2.46462 2.49507

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 

0.00/0.03	c bpsolver version 6.29.2009
0.00/0.03	c converting(HOME/instance-2082019-1247374517)
0.58/0.68	c Converted in 284 ms
0.68/0.77	c solving(HOME/instance-2082019-1247374517,1800000)
0.68/0.77	c solving(HOME/instance-2082019-1247374517,1800000)
2.37/2.49	c before_labeling
2.37/2.49	s UNSATISFIABLE
2.37/2.49	
2.37/2.49	
2.37/2.49	c Time=1779 ms Backtracks=0
2.37/2.49

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-2082019-1247374517/watcher-2082019-1247374517 -o /tmp/evaluation-result-2082019-1247374517/solver-2082019-1247374517 -C 1800 -W 2000 -M 900 HOME/solver HOME/instance-2082019-1247374517 1800 

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: 2.16 2.08 2.02 4/74 26354
/proc/meminfo: memFree=1276296/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=5356 CPUtime=0
/proc/26354/stat : 26354 (sh) R 26352 26354 20333 0 -1 4194304 261 0 0 0 0 0 0 0 20 0 1 0 24517746 5484544 228 996147200 4194304 4889804 548682068864 18446744073709551615 4456595 0 0 4100 65536 0 0 0 17 1 0 0
/proc/26354/statm: 1339 228 190 169 0 50 0

[startup+0.0606011 s]
/proc/loadavg: 2.16 2.08 2.02 4/74 26354
/proc/meminfo: memFree=1276296/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=62208 CPUtime=0.03
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 1107 0 0 0 2 1 0 0 20 0 1 0 24517746 63700992 820 996147200 134512640 135105188 4294956096 18446744073709551615 134557552 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 15552 820 177 144 0 15036 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 62208

[startup+0.101606 s]
/proc/loadavg: 2.16 2.08 2.02 4/74 26354
/proc/meminfo: memFree=1276296/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=62208 CPUtime=0.08
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 1108 0 0 0 4 4 0 0 20 0 1 0 24517746 63700992 821 996147200 134512640 135105188 4294956096 18446744073709551615 4294960144 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 15552 821 177 144 0 15036 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 62208

[startup+0.301618 s]
/proc/loadavg: 2.16 2.08 2.02 4/74 26354
/proc/meminfo: memFree=1276296/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=62208 CPUtime=0.28
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 1112 0 0 0 12 16 0 0 21 0 1 0 24517746 63700992 825 996147200 134512640 135105188 4294956096 18446744073709551615 4294960144 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 15552 825 177 144 0 15036 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 62208

[startup+0.701643 s]
/proc/loadavg: 2.16 2.08 2.02 4/74 26354
/proc/meminfo: memFree=1276296/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=62204 CPUtime=0.68
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 1225 0 0 0 31 37 0 0 25 0 1 0 24517746 63696896 936 996147200 134512640 135105188 4294956096 18446744073709551615 134557264 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 15551 936 179 144 0 15035 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 62204

[startup+1.5017 s]
/proc/loadavg: 2.16 2.08 2.02 3/75 26355
/proc/meminfo: memFree=1269376/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=70304 CPUtime=1.47
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 2119 0 0 0 110 37 0 0 25 0 1 0 24517746 71991296 1829 996147200 134512640 135105188 4294956096 18446744073709551615 134604570 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 17576 1829 187 144 0 17060 0
Current children cumulated CPU time (s) 1.47
Current children cumulated vsize (KiB) 70304

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

[startup+1.90173 s]
/proc/loadavg: 2.16 2.08 2.02 3/75 26355
/proc/meminfo: memFree=1269376/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=70304 CPUtime=1.87
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 2183 0 0 0 149 38 0 0 25 0 1 0 24517746 71991296 1893 996147200 134512640 135105188 4294956096 18446744073709551615 134800743 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 17576 1893 187 144 0 17060 0
Current children cumulated CPU time (s) 1.87
Current children cumulated vsize (KiB) 70304

[startup+2.30176 s]
/proc/loadavg: 2.15 2.08 2.02 3/75 26355
/proc/meminfo: memFree=1268800/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=70304 CPUtime=2.27
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 2263 0 0 0 189 38 0 0 25 0 1 0 24517746 71991296 1973 996147200 134512640 135105188 4294956096 18446744073709551615 134800642 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 17576 1973 187 144 0 17060 0
Current children cumulated CPU time (s) 2.27
Current children cumulated vsize (KiB) 70304

[startup+2.40177 s]
/proc/loadavg: 2.15 2.08 2.02 3/75 26355
/proc/meminfo: memFree=1268800/2055920 swapFree=4192812/4192956
[pid=26354] ppid=26352 vsize=70304 CPUtime=2.37
/proc/26354/stat : 26354 (bprolog) R 26352 26354 20333 0 -1 4194304 2283 0 0 0 199 38 0 0 25 0 1 0 24517746 71991296 1993 996147200 134512640 135105188 4294956096 18446744073709551615 134800240 0 0 4096 2 0 0 0 17 1 0 0
/proc/26354/statm: 17576 1993 187 144 0 17060 0
Current children cumulated CPU time (s) 2.37
Current children cumulated vsize (KiB) 70304

Child status: 0
Real time (s): 2.49507
CPU time (s): 2.46462
CPU user time (s): 2.08068
CPU system time (s): 0.383941
CPU usage (%): 98.7799
Max. virtual memory (cumulated for all children) (KiB): 70304

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.08068
system time used= 0.383941
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2304
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 4
involuntary context switches= 81

runsolver used 0.005999 second user time and 0.013997 second system time

The end

Launcher Data 

Begin job on node34 at 2009-07-12 06:55:17
IDJOB=2082019
IDBENCH=57521
IDSOLVER=770
FILE ID=node34/2082019-1247374517
PBS_JOBID= 9507041
Free space on /tmp= 66172 MiB

SOLVER NAME= bpsolver 09
BENCH NAME= CPAI08/csp/super-queens/normalized-super-queens-12.xml
COMMAND LINE= HOME/solver BENCHNAMENOEXT TIMEOUT
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2082019-1247374517/watcher-2082019-1247374517 -o /tmp/evaluation-result-2082019-1247374517/solver-2082019-1247374517 -C 1800 -W 2000 -M 900  HOME/solver HOME/instance-2082019-1247374517 1800

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

MD5SUM BENCH= 12cac64112c90184707842af1dca4fb5
RANDOM SEED=870225899

node34.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		: 3000.232
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		: 3000.232
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:       1276776 kB
Buffers:         44336 kB
Cached:         335512 kB
SwapCached:          0 kB
Active:         631344 kB
Inactive:        84388 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1276776 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2680 kB
Writeback:           0 kB
Mapped:         347112 kB
Slab:            48016 kB
Committed_AS:   501580 kB
PageTables:       2500 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= 66168 MiB
End job on node34 at 2009-07-12 06:55:20