Trace number 200321

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 10.6064 10.7285

DiagnosticValue
CHECKS954189000
NODES129

General information on the benchmark

NamequeensKnights/
queensKnights-20-5-mul.xml
MD5SUMda4256ae01633c1c4b30ed940167fe93
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 benchmark1.26981
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables25
Number of constraints300
Maximum constraint arity2
Maximum domain size400
Number of constraints which are defined in extension0
Number of constraints which are defined in intension300
Global constraints used (with number of constraints)

Solver Data (download as text)

10.72	s UNSATISFIABLE
10.72	d CHECKS 9.54189e+08
10.72	d NODES 129
10.72

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/node56/watcher-200321-1168142124 -o ROOT/results/node56/solver-200321-1168142124 -C 1800 -M 900 /tmp/evaluation/200321-1168142124/VALCSP /tmp/evaluation/200321-1168142124/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: 1.72 1.23 1.08 5/84 28554
/proc/meminfo: memFree=1362192/2055920 swapFree=4184772/4192956
[pid=28553] ppid=28551 vsize=1600 CPUtime=0
/proc/28553/stat : 28553 (VALCSP) R 28551 28553 28287 0 -1 4194304 137 0 0 0 0 0 0 0 20 0 1 0 162610513 1638400 115 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 10465986 0 0 4096 0 0 0 0 17 1 0 0
/proc/28553/statm: 400 115 64 8 0 72 0

[startup+0.107078 s]
/proc/loadavg: 1.72 1.23 1.08 5/84 28554
/proc/meminfo: memFree=1362192/2055920 swapFree=4184772/4192956
[pid=28553] ppid=28551 vsize=2656 CPUtime=0.09
/proc/28553/stat : 28553 (VALCSP) R 28551 28553 28287 0 -1 4194304 397 0 0 0 9 0 0 0 20 0 1 0 162610513 2719744 375 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134530223 0 0 4096 0 0 0 0 17 1 0 0
/proc/28553/statm: 664 375 64 8 0 336 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2656

[startup+0.515115 s]
/proc/loadavg: 1.72 1.23 1.08 5/84 28554
/proc/meminfo: memFree=1362192/2055920 swapFree=4184772/4192956
[pid=28553] ppid=28551 vsize=6352 CPUtime=0.5
/proc/28553/stat : 28553 (VALCSP) R 28551 28553 28287 0 -1 4194304 1343 0 0 0 50 0 0 0 24 0 1 0 162610513 6504448 1321 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134530300 0 0 4096 0 0 0 0 17 1 0 0
/proc/28553/statm: 1588 1321 64 8 0 1260 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 6352

[startup+1.3362 s]
/proc/loadavg: 1.72 1.23 1.08 3/84 28554
/proc/meminfo: memFree=1340112/2055920 swapFree=4184772/4192956
[pid=28553] ppid=28551 vsize=11500 CPUtime=1.31
/proc/28553/stat : 28553 (VALCSP) R 28551 28553 28287 0 -1 4194304 2627 0 0 0 130 1 0 0 25 0 1 0 162610513 11776000 2605 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134524702 0 0 4096 0 0 0 0 17 1 0 0
/proc/28553/statm: 2875 2605 66 8 0 2547 0
Current children cumulated CPU time (s) 1.31
Current children cumulated vsize (KiB) 11500

[startup+2.97336 s]
/proc/loadavg: 1.72 1.23 1.08 4/85 28555
/proc/meminfo: memFree=1331208/2055920 swapFree=4184772/4192956
[pid=28553] ppid=28551 vsize=11500 CPUtime=2.94
/proc/28553/stat : 28553 (VALCSP) R 28551 28553 28287 0 -1 4194304 2627 0 0 0 293 1 0 0 25 0 1 0 162610513 11776000 2605 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134520884 0 0 4096 0 0 0 0 17 1 0 0
/proc/28553/statm: 2875 2605 66 8 0 2547 0
Current children cumulated CPU time (s) 2.94
Current children cumulated vsize (KiB) 11500

[startup+6.26769 s]
/proc/loadavg: 1.75 1.25 1.09 3/85 28555
/proc/meminfo: memFree=1323976/2055920 swapFree=4184772/4192956
[pid=28553] ppid=28551 vsize=11500 CPUtime=6.18
/proc/28553/stat : 28553 (VALCSP) R 28551 28553 28287 0 -1 4194304 2627 0 0 0 617 1 0 0 25 0 1 0 162610513 11776000 2605 18446744073709551615 134512640 134548440 4294956736 18446744073709551615 134524645 0 0 4096 0 0 0 0 17 1 0 0
/proc/28553/statm: 2875 2605 66 8 0 2547 0
Current children cumulated CPU time (s) 6.18
Current children cumulated vsize (KiB) 11500

Child status: 0
Real time (s): 10.7285
CPU time (s): 10.6064
CPU user time (s): 10.5904
CPU system time (s): 0.015997
CPU usage (%): 98.8613
Max. virtual memory (cumulated for all children) (KiB): 11500

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 10.5904
system time used= 0.015997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2656
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= 204

runsolver used 0.011998 s user time and 0.035994 s system time

The end

Launcher Data (download as text)

Begin job on node56 on Sun Jan  7 03:55:24 UTC 2007


IDJOB= 200321
IDBENCH= 3701
FILE ID= node56/200321-1168142124

PBS_JOBID= 3478093

Free space on /tmp= 66555 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queensKnights/queensKnights-20-5-mul.xml
COMMAND LINE= /tmp/evaluation/200321-1168142124/VALCSP /tmp/evaluation/200321-1168142124/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node56/watcher-200321-1168142124 -o ROOT/results/node56/solver-200321-1168142124 -C 1800 -M 900  /tmp/evaluation/200321-1168142124/VALCSP /tmp/evaluation/200321-1168142124/unknown.xml

META MD5SUM SOLVER= 6fc756be3a7e45a17a81a19ce431bc48
MD5SUM BENCH=  da4256ae01633c1c4b30ed940167fe93

RANDOM SEED= 629412541

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		: 3000.232
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		: 3000.232
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:       1362672 kB
Buffers:         25636 kB
Cached:         259084 kB
SwapCached:       2104 kB
Active:         436208 kB
Inactive:       185580 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1362672 kB
SwapTotal:     4192956 kB
SwapFree:      4184772 kB
Dirty:             100 kB
Writeback:           0 kB
Mapped:         354472 kB
Slab:            56144 kB
Committed_AS:  3817328 kB
PageTables:       2544 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= 66555 MiB



End job on node56 on Sun Jan  7 03:55:34 UTC 2007