Trace number 2082326

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 1.545SAT 0.009998 0.0136141

DiagnosticValue
ASSIGNMENTS15
CHECKS828
NODES15

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-7.xml
MD5SUM7461ea6c46b3c4fc477be1a9706828d0
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.009998
Satisfiable
(Un)Satisfiability was proved
Number of variables14
Number of constraints98
Maximum constraint arity2
Maximum domain size14
Number of constraints which are defined in extension0
Number of constraints which are defined in intension98
Global constraints used (with number of constraints)

Solver Data 

0.00/0.00	c mistral version 1.545
0.00/0.01	s SATISFIABLE
0.00/0.01	v 11 1 6 2 3 5 0 13 4 10 7 9 12 8
0.00/0.01	d CHECKS 828
0.00/0.01	d ASSIGNMENTS 15
0.00/0.01	d NODES 15 BACKTRACKS 11 FAILURES 11 RUNTIME 0 TOTALTIME 0 NODES/s 1500 CHECKS/s 0

Verifier Data 

OK

Watcher Data 

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2082326-1247374928/watcher-2082326-1247374928 -o /tmp/evaluation-result-2082326-1247374928/solver-2082326-1247374928 -C 1800 -W 2000 -M 900 /home/evaluation/evaluation/libc32/lib/ld-linux.so.2 ./xsolve HOME/instance-2082326-1247374928.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: 1.90 2.04 2.10 4/72 26026
/proc/meminfo: memFree=1846264/2055920 swapFree=4192812/4192956
[pid=26026] ppid=26024 vsize=4804 CPUtime=0
/proc/26026/stat : 26026 (ld-linux.so.2) R 26024 26026 18450 0 -1 4194304 180 0 0 0 0 0 0 0 18 0 1 0 24559759 4919296 161 996147200 1448431616 1448550632 4294956208 18446744073709551615 1448480496 0 0 4096 0 0 0 0 17 0 0 0
/proc/26026/statm: 1201 162 137 29 0 16 0

[startup+0.013078 s]
/proc/loadavg: 1.90 2.04 2.10 4/72 26026
/proc/meminfo: memFree=1846264/2055920 swapFree=4192812/4192956
[pid=26026] ppid=26024 vsize=4948 CPUtime=0
/proc/26026/stat : 26026 (ld-linux.so.2) R 26024 26026 18450 0 -1 4194304 543 0 1 0 0 0 0 0 18 0 1 0 24559759 5066752 523 996147200 1448431616 1448550632 4294956208 18446744073709551615 4160450640 0 0 4096 0 0 0 0 17 0 0 0
/proc/26026/statm: 1237 525 462 29 0 52 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 4948

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

[startup+0.013078 s]
/proc/loadavg: 1.90 2.04 2.10 4/72 26026
/proc/meminfo: memFree=1846264/2055920 swapFree=4192812/4192956
[pid=26026] ppid=26024 vsize=4948 CPUtime=0
/proc/26026/stat : 26026 (ld-linux.so.2) R 26024 26026 18450 0 -1 4194304 543 0 1 0 0 0 0 0 18 0 1 0 24559759 5066752 523 996147200 1448431616 1448550632 4294956208 18446744073709551615 4160450640 0 0 4096 0 0 0 0 17 0 0 0
/proc/26026/statm: 1237 525 462 29 0 52 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 4948

Child status: 0
Real time (s): 0.0136141
CPU time (s): 0.009998
CPU user time (s): 0.004999
CPU system time (s): 0.004999
CPU usage (%): 73.4386
Max. virtual memory (cumulated for all children) (KiB): 4948

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.004999
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 546
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 25
involuntary context switches= 6

runsolver used 0.003999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node13 at 2009-07-12 07:02:08
IDJOB=2082326
IDBENCH=57571
IDSOLVER=769
FILE ID=node13/2082326-1247374928
PBS_JOBID= 9507014
Free space on /tmp= 66300 MiB

SOLVER NAME= Mistral 1.545
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-7.xml
COMMAND LINE= /home/evaluation/evaluation/libc32/lib/ld-linux.so.2 ./xsolve BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2082326-1247374928/watcher-2082326-1247374928 -o /tmp/evaluation-result-2082326-1247374928/solver-2082326-1247374928 -C 1800 -W 2000 -M 900  /home/evaluation/evaluation/libc32/lib/ld-linux.so.2 ./xsolve HOME/instance-2082326-1247374928.xml

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

MD5SUM BENCH= 7461ea6c46b3c4fc477be1a9706828d0
RANDOM SEED=708138704

node13.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		: 3000.241
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		: 3000.241
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:       1846744 kB
Buffers:          6600 kB
Cached:          69696 kB
SwapCached:          0 kB
Active:         123448 kB
Inactive:        25432 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1846744 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1528 kB
Writeback:           0 kB
Mapped:          84208 kB
Slab:            45520 kB
Committed_AS:   228104 kB
PageTables:       1928 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= 66300 MiB
End job on node13 at 2009-07-12 07:02:09