Trace number 1084420

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
MDG-noprobe 2008-06-27SAT 0.035994 0.0365341

DiagnosticValue
ASSIGNMENTS40
CHECKS4384

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-20.xml
MD5SUMac93d30a66ab288a3e01eb7f585af8dc
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 benchmark0.034994
Satisfiable
(Un)Satisfiability was proved
Number of variables40
Number of constraints800
Maximum constraint arity2
Maximum domain size40
Number of constraints which are defined in extension0
Number of constraints which are defined in intension800
Global constraints used (with number of constraints)

Solver Data (download as text)

0.00/0.00	c mistral-prime version 1.313
0.02/0.03	s SATISFIABLE
0.02/0.03	v 10 35 29 31 28 32 9 7 27 14 3 13 6 4 8 1 5 11 2 0 12 38 33 36 34 39 17 16 37 25 15 26 20 19 24 18 23 30 22 21
0.02/0.03	d CHECKS 4384
0.02/0.03	d ASSIGNMENTS 40

Verifier Data (download as text)

OK

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-1084420-1215230384/watcher-1084420-1215230384 -o /tmp/evaluation-result-1084420-1215230384/solver-1084420-1215230384 -C 1800 -W 2200 -M 900 --output-limit 1,15 HOME/xsolve HOME/instance-1084420-1215230384.xml -heu dom/wdeg -res no 

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: 2.40 2.29 2.17 4/81 4037
/proc/meminfo: memFree=1410616/2055920 swapFree=4192812/4192956
[pid=4037] ppid=4035 vsize=4584 CPUtime=0
/proc/4037/stat : 4037 (xsolve) R 4035 4037 2756 0 -1 4194304 325 0 0 0 0 0 0 0 18 0 1 0 134708492 4694016 293 996147200 134512640 135239859 4294956208 18446744073709551615 134634186 0 0 4096 0 0 0 0 17 0 0 0
/proc/4037/statm: 1146 298 253 177 0 49 0

[startup+0.0243329 s]
/proc/loadavg: 2.40 2.29 2.17 4/81 4037
/proc/meminfo: memFree=1410616/2055920 swapFree=4192812/4192956
[pid=4037] ppid=4035 vsize=4716 CPUtime=0.02
/proc/4037/stat : 4037 (xsolve) R 4035 4037 2756 0 -1 4194304 504 0 0 0 2 0 0 0 18 0 1 0 134708492 4829184 470 996147200 134512640 135239859 4294956208 18446744073709551615 11122299 0 0 4096 0 0 0 0 17 0 0 0
/proc/4037/statm: 1179 470 371 177 0 82 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 4716

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

[startup+0.0243329 s]
/proc/loadavg: 2.40 2.29 2.17 4/81 4037
/proc/meminfo: memFree=1410616/2055920 swapFree=4192812/4192956
[pid=4037] ppid=4035 vsize=4716 CPUtime=0.02
/proc/4037/stat : 4037 (xsolve) R 4035 4037 2756 0 -1 4194304 504 0 0 0 2 0 0 0 18 0 1 0 134708492 4829184 470 996147200 134512640 135239859 4294956208 18446744073709551615 11122299 0 0 4096 0 0 0 0 17 0 0 0
/proc/4037/statm: 1179 470 371 177 0 82 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 4716

Child status: 0
Real time (s): 0.0365341
CPU time (s): 0.035994
CPU user time (s): 0.031995
CPU system time (s): 0.003999
CPU usage (%): 98.5216
Max. virtual memory (cumulated for all children) (KiB): 4716

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.031995
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 633
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= 7
involuntary context switches= 6

runsolver used 0.002999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node27 at 2008-07-05 05:59:44
IDJOB=1084420
IDBENCH=57557
IDSOLVER=343
FILE ID=node27/1084420-1215230384
PBS_JOBID= 7881844
Free space on /tmp= 66428 MiB

SOLVER NAME= MDG-noprobe 2008-06-27
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-20.xml
COMMAND LINE= HOME/xsolve BENCHNAME -heu dom/wdeg -res no 
RUNSOLVER COMMAND LINE= /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1084420-1215230384/watcher-1084420-1215230384 -o /tmp/evaluation-result-1084420-1215230384/solver-1084420-1215230384 -C 1800 -W 2200 -M 900 --output-limit 1,15  HOME/xsolve HOME/instance-1084420-1215230384.xml -heu dom/wdeg -res no 

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB

MD5SUM BENCH= ac93d30a66ab288a3e01eb7f585af8dc
RANDOM SEED=1551648473

node27.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		: 2800.188
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	: 5521.40
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		: 2800.188
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:       1411096 kB
Buffers:         94092 kB
Cached:         380004 kB
SwapCached:          0 kB
Active:         270788 kB
Inactive:       296060 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1411096 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:           27840 kB
Writeback:           0 kB
Mapped:         112096 kB
Slab:            63268 kB
Committed_AS:  1100700 kB
PageTables:       1776 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264948 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66428 MiB
End job on node27 at 2008-07-05 05:59:44