Trace number 1084708

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
cpHydra k_10UNSAT 0.019996 0.0263989

DiagnosticValue
ASSIGNMENTS17
CHECKS836

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-5.xml
MD5SUM42a251b4e5e78e8baab98daca83f50dd
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 benchmark0.005998
Satisfiable
(Un)Satisfiability was proved
Number of variables10
Number of constraints50
Maximum constraint arity2
Maximum domain size10
Number of constraints which are defined in extension0
Number of constraints which are defined in intension50
Global constraints used (with number of constraints)

Solver Data (download as text)

0.00/0.00	c cpHydra_k_10 version 0.0
0.00/0.02	c mistral-prime version 1.313
0.00/0.02	s UNSATISFIABLE
0.00/0.02	d CHECKS 836
0.00/0.02	d ASSIGNMENTS 17

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.5 (c) roussel@cril.univ-artois.fr

command line: /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1084708-1215231500/watcher-1084708-1215231500 -o /tmp/evaluation-result-1084708-1215231500/solver-1084708-1215231500 -C 1800 -W 2200 -M 900 --output-limit 1,15 HOME/cpHydra_k_10/hydra HOME/instance-1084708-1215231500.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): 2200 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.08 2.02 2.01 4/81 8117
/proc/meminfo: memFree=1557848/2055920 swapFree=4180884/4192956
[pid=8117] ppid=8115 vsize=18572 CPUtime=0
/proc/8117/stat : 8117 (runsolver) R 8115 8117 7628 0 -1 4194368 15 0 0 0 0 0 0 0 20 0 1 0 1007554685 19017728 292 996147200 4194304 4296836 548682068480 18446744073709551615 206381313319 0 0 4096 24578 0 0 0 17 1 0 0
/proc/8117/statm: 4643 292 257 25 0 2626 0

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

Child status: 0
Real time (s): 0.0263989
CPU time (s): 0.019996
CPU user time (s): 0.004999
CPU system time (s): 0.014997
CPU usage (%): 75.7455
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.004999
system time used= 0.014997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1636
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= 26
involuntary context switches= 11

runsolver used 0.005999 second user time and 0.004999 second system time

The end

Launcher Data (download as text)

Begin job on node2 at 2008-07-05 06:18:20
IDJOB=1084708
IDBENCH=57579
IDSOLVER=365
FILE ID=node2/1084708-1215231500
PBS_JOBID= 7881872
Free space on /tmp= 66512 MiB

SOLVER NAME= cpHydra k_10
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-5.xml
COMMAND LINE= HOME/cpHydra_k_10/hydra BENCHNAME 
RUNSOLVER COMMAND LINE= /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1084708-1215231500/watcher-1084708-1215231500 -o /tmp/evaluation-result-1084708-1215231500/solver-1084708-1215231500 -C 1800 -W 2200 -M 900 --output-limit 1,15  HOME/cpHydra_k_10/hydra HOME/instance-1084708-1215231500.xml 

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB

MD5SUM BENCH= 42a251b4e5e78e8baab98daca83f50dd
RANDOM SEED=834242463

node2.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		: 3000.236
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		: 3000.236
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:       1558264 kB
Buffers:         60760 kB
Cached:         189292 kB
SwapCached:       5968 kB
Active:         330480 kB
Inactive:        98900 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1558264 kB
SwapTotal:     4192956 kB
SwapFree:      4180884 kB
Dirty:           24632 kB
Writeback:           0 kB
Mapped:         195380 kB
Slab:            52864 kB
Committed_AS:  1909412 kB
PageTables:       2384 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264992 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66488 MiB
End job on node2 at 2008-07-05 06:18:21