Trace number 200486

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
VALCSP 3.0UNSAT 22.4676 22.6211

DiagnosticValue
CHECKS3222630000
NODES357

General information on the benchmark

NamequeensKnights/
queensKnights-20-5-add.xml
MD5SUM253a2f8b56ae1170f4a8024dd86a3120
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 benchmark0.896863
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables25
Number of constraints200
Maximum constraint arity2
Maximum domain size400
Number of constraints which are defined in extension0
Number of constraints which are defined in intension200
Global constraints used (with number of constraints)

Solver Data (download as text)

22.61	s UNSATISFIABLE
22.61	d CHECKS 3.22263e+09
22.61	d NODES 357
22.61

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node55/watcher-200486-1168142743 -o ROOT/results/node55/solver-200486-1168142743 -C 1800 -M 900 /tmp/evaluation/200486-1168142743/VALCSP /tmp/evaluation/200486-1168142743/unknown.xml 

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: 1.14 1.42 1.77 5/81 746
/proc/meminfo: memFree=1565976/2055920 swapFree=4192812/4192956
[pid=745] ppid=743 vsize=1468 CPUtime=0
/proc/745/stat : 745 (VALCSP) R 743 745 32760 0 -1 4194304 129 0 0 0 0 0 0 0 20 0 1 0 162672564 1503232 107 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134530300 0 0 4096 0 0 0 0 17 1 0 0
/proc/745/statm: 367 107 64 8 0 39 0

[startup+0.10641 s]
/proc/loadavg: 1.14 1.42 1.77 5/81 746
/proc/meminfo: memFree=1565976/2055920 swapFree=4192812/4192956
[pid=745] ppid=743 vsize=2524 CPUtime=0.09
/proc/745/stat : 745 (VALCSP) R 743 745 32760 0 -1 4194304 396 0 0 0 9 0 0 0 20 0 1 0 162672564 2584576 374 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134530475 0 0 4096 0 0 0 0 17 1 0 0
/proc/745/statm: 631 374 64 8 0 303 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2524

[startup+0.51445 s]
/proc/loadavg: 1.14 1.42 1.77 5/81 746
/proc/meminfo: memFree=1565976/2055920 swapFree=4192812/4192956
[pid=745] ppid=743 vsize=6352 CPUtime=0.5
/proc/745/stat : 745 (VALCSP) R 743 745 32760 0 -1 4194304 1342 0 0 0 50 0 0 0 24 0 1 0 162672564 6504448 1320 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134530220 0 0 4096 0 0 0 0 17 1 0 0
/proc/745/statm: 1588 1320 64 8 0 1260 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 6352

[startup+1.33553 s]
/proc/loadavg: 1.21 1.43 1.77 3/81 746
/proc/meminfo: memFree=1557016/2055920 swapFree=4192812/4192956
[pid=745] ppid=743 vsize=8332 CPUtime=1.31
/proc/745/stat : 745 (VALCSP) R 743 745 32760 0 -1 4194304 1820 0 0 0 131 0 0 0 25 0 1 0 162672564 8531968 1798 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134521950 0 0 4096 0 0 0 0 17 1 0 0
/proc/745/statm: 2083 1798 66 8 0 1755 0
Current children cumulated CPU time (s) 1.31
Current children cumulated vsize (KiB) 8332

[startup+2.97269 s]
/proc/loadavg: 1.21 1.43 1.77 3/81 746
/proc/meminfo: memFree=1556760/2055920 swapFree=4192812/4192956
[pid=745] ppid=743 vsize=8332 CPUtime=2.93
/proc/745/stat : 745 (VALCSP) R 743 745 32760 0 -1 4194304 1820 0 0 0 293 0 0 0 25 0 1 0 162672564 8531968 1798 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134524680 0 0 4096 0 0 0 0 17 1 0 0
/proc/745/statm: 2083 1798 66 8 0 1755 0
Current children cumulated CPU time (s) 2.93
Current children cumulated vsize (KiB) 8332

[startup+6.25902 s]
/proc/loadavg: 1.21 1.43 1.77 3/81 746
/proc/meminfo: memFree=1556456/2055920 swapFree=4192812/4192956
[pid=745] ppid=743 vsize=8332 CPUtime=6.19
/proc/745/stat : 745 (VALCSP) R 743 745 32760 0 -1 4194304 1820 0 0 0 619 0 0 0 25 0 1 0 162672564 8531968 1798 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134524689 0 0 4096 0 0 0 0 17 1 0 0
/proc/745/statm: 2083 1798 66 8 0 1755 0
Current children cumulated CPU time (s) 6.19
Current children cumulated vsize (KiB) 8332

[startup+12.7176 s]
/proc/loadavg: 1.33 1.45 1.77 3/81 746
/proc/meminfo: memFree=1556472/2055920 swapFree=4192812/4192956
[pid=745] ppid=743 vsize=8332 CPUtime=12.6
/proc/745/stat : 745 (VALCSP) R 743 745 32760 0 -1 4194304 1820 0 0 0 1260 0 0 0 25 0 1 0 162672564 8531968 1798 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134524680 0 0 4096 0 0 0 0 17 1 0 0
/proc/745/statm: 2083 1798 66 8 0 1755 0
Current children cumulated CPU time (s) 12.6
Current children cumulated vsize (KiB) 8332

Child status: 0
Real time (s): 22.6211
CPU time (s): 22.4676
CPU user time (s): 22.4466
CPU system time (s): 0.020996
CPU usage (%): 99.3213
Max. virtual memory (cumulated for all children) (KiB): 8332

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 22.4466
system time used= 0.020996
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1849
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= 730

runsolver used 0.026995 s user time and 0.06299 s system time

The end

Launcher Data (download as text)

Begin job on node55 on Sun Jan  7 04:05:43 UTC 2007


IDJOB= 200486
IDBENCH= 3710
FILE ID= node55/200486-1168142743

PBS_JOBID= 3478101

Free space on /tmp= 66558 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queensKnights/queensKnights-20-5-add.xml
COMMAND LINE= /tmp/evaluation/200486-1168142743/VALCSP /tmp/evaluation/200486-1168142743/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node55/watcher-200486-1168142743 -o ROOT/results/node55/solver-200486-1168142743 -C 1800 -M 900  /tmp/evaluation/200486-1168142743/VALCSP /tmp/evaluation/200486-1168142743/unknown.xml

META MD5SUM SOLVER= 6fc756be3a7e45a17a81a19ce431bc48
MD5SUM BENCH=  253a2f8b56ae1170f4a8024dd86a3120

RANDOM SEED= 734169503

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	: 5931.00
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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1566392 kB
Buffers:         17488 kB
Cached:         387180 kB
SwapCached:          0 kB
Active:         181668 kB
Inactive:       251532 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1566392 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:             860 kB
Writeback:           0 kB
Mapped:          46528 kB
Slab:            41636 kB
Committed_AS:  3308724 kB
PageTables:       1824 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= 66558 MiB



End job on node55 on Sun Jan  7 04:06:06 UTC 2007