Trace number 192151

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, and are wall clock time (not CPU 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
BPrologCSPSolver70a 2006-12-13SAT 0.215966 0.215519

General information on the benchmark

Namequeens/
queens-100.xml
MD5SUM2298692c2d9aa0ddcbd68522b3128865
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 benchmark0.215966
SatisfiableYES
(Un)Satisfiability was provedYES
Number of variables100
Number of constraints4950
Maximum constraint arity2
Maximum domain size100
Number of constraints which are defined in extension0
Number of constraints which are defined in intension4950
Global constraints used (with number of constraints)

Solver Data (download as text)

0.21	
0.21	Time: 189
0.21	
c 
c 
c 
c solution file
c 
c 

SAT
1 3 5 57 59 4 64 7 58 71 81 60 6 91 82 90 8 83 77 65 73 26 9 45 37 63 66 62 44 10 48 54 43 69 42 47 18 11 72 68 50 56 61 36 33 17 12 51 100 93 97 88 35 84 78 19 13 99 67 76 92 75 87 96 94 85 20 14 95 32 98 55 40 80 49 52 46 53 21 15 41 2 27 34 22 70 74 29 25 30 38 86 16 79 24 39 28 23 31 89 
c 
c 
c 
c conversion script
c 
c 

converting(/tmp/evaluation/192151-1168096682/unknown)

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.1.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node75/watcher-192151-1168096682 -o ROOT/results/node75/solver-192151-1168096682 -C 1800 -M 900 /tmp/evaluation/192151-1168096682/Complete/Ordinary/solver /tmp/evaluation/192151-1168096682/unknown 1800 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 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

/proc/loadavg: 0.41 1.20 1.62 2/68 27546
/proc/meminfo: memFree=1696472/2055920 swapFree=4184496/4192956
[pid=27545] ppid=27543 vsize=53472 CPUtime=0
/proc/27545/stat : 27545 (bprolog) R 27543 27545 27401 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 158069101 54755328 204 18446744073709551615 134512640 134884608 4294956576 18446744073709551615 134550338 0 0 4096 2 0 0 0 17 1 0 0
/proc/27545/statm: 13368 205 123 90 0 12906 0

[startup+0.102363 s]
/proc/loadavg: 0.41 1.20 1.62 2/68 27546
/proc/meminfo: memFree=1696472/2055920 swapFree=4184496/4192956
[pid=27545] ppid=27543 vsize=53824 CPUtime=0.1
/proc/27545/stat : 27545 (bprolog) R 27543 27545 27401 0 -1 4194304 1998 0 0 0 9 1 0 0 18 0 1 0 158069101 55115776 1714 18446744073709551615 134512640 134884608 4294956576 18446744073709551615 134736249 0 0 4096 2 0 0 0 17 1 0 0
/proc/27545/statm: 13456 1714 158 90 0 12994 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 53824

Child status: 0
Real time (s): 0.215519
CPU time (s): 0.215966
CPU user time (s): 0.200969
CPU system time (s): 0.014997
CPU usage (%): 100.207
Max. virtual memory (cumulated for all children) (KiB): 62000

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.200969
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= 2608
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= 8
involuntary context switches= 1

runsolver used 0.002999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node75 on Sat Jan  6 15:18:08 UTC 2007


IDJOB= 192151
IDBENCH= 3094
FILE ID= node75/192151-1168096682

PBS_JOBID= 3476809

Free space on /tmp= 66548 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queens/queens-100.xml
COMMAND LINE= /tmp/evaluation/192151-1168096682/Complete/Ordinary/solver /tmp/evaluation/192151-1168096682/unknown 1800
CONVERSION COMMAND LINE= runsolver -w ROOT/results/node75/convwatcher-192151-1168096682 -o ROOT/results/node75/conversion-192151-1168096682 -C 600 -M 900 /tmp/evaluation/192151-1168096682/Complete/Ordinary/conversion /tmp/evaluation/192151-1168096682/unknown
CONVERSION RUNSOLVER STATUS CODE= 0
CONVERSION STATUS CODE= 0

RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node75/watcher-192151-1168096682 -o ROOT/results/node75/solver-192151-1168096682 -C 1800 -M 900  /tmp/evaluation/192151-1168096682/Complete/Ordinary/solver /tmp/evaluation/192151-1168096682/unknown 1800

META MD5SUM SOLVER= b53ab06f245aa5e62684a7a0a4388ade
MD5SUM BENCH=  2298692c2d9aa0ddcbd68522b3128865

RANDOM SEED= 860384916

TIME LIMIT= 1800 seconds

MEMORY LIMIT= 900 MiB


/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		: 3000.218
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		: 3000.218
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1598536 kB
Buffers:         14000 kB
Cached:         308420 kB
SwapCached:       2484 kB
Active:         135868 kB
Inactive:       270072 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1598536 kB
SwapTotal:     4192956 kB
SwapFree:      4184496 kB
Dirty:           31144 kB
Writeback:           0 kB
Mapped:          90460 kB
Slab:            36680 kB
Committed_AS:  3271224 kB
PageTables:       1956 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= 66547 MiB



End job on node75 on Sat Jan  6 15:18:18 UTC 2007