Trace number 232636

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 0.567913 0.580309

DiagnosticValue
CHECKS26235900
NODES20

General information on the benchmark

Nametaillard/
os-taillard-4/os-taillard-4-95-2.xml
MD5SUM4fba640db4f884ad11082dd4c9db0fdf
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 benchmark0.015997
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables16
Number of constraints48
Maximum constraint arity2
Maximum domain size256
Number of constraints which are defined in extension0
Number of constraints which are defined in intension48
Global constraints used (with number of constraints)

Solver Data (download as text)

0.57	s UNSATISFIABLE
0.57	d CHECKS 2.62359e+07
0.57	d NODES 20
0.57

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/node4/watcher-232636-1168323815 -o ROOT/results/node4/solver-232636-1168323815 -C 1800 -M 900 /tmp/evaluation/232636-1168323815/VALCSP /tmp/evaluation/232636-1168323815/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: 2.05 2.04 2.01 5/87 18106
/proc/meminfo: memFree=1195048/2055920 swapFree=4182144/4192956
[pid=18105] ppid=18103 vsize=1732 CPUtime=0
/proc/18105/stat : 18105 (VALCSP) R 18103 18105 17979 0 -1 4194304 167 0 0 0 0 0 0 0 20 0 1 0 180777150 1773568 145 18446744073709551615 134512640 134548440 4294956720 18446744073709551615 134530412 0 0 4096 0 0 0 0 17 1 0 0
/proc/18105/statm: 433 145 64 8 0 105 0

[startup+0.108358 s]
/proc/loadavg: 2.05 2.04 2.01 5/87 18106
/proc/meminfo: memFree=1195048/2055920 swapFree=4182144/4192956
[pid=18105] ppid=18103 vsize=3316 CPUtime=0.1
/proc/18105/stat : 18105 (VALCSP) R 18103 18105 17979 0 -1 4194304 591 0 0 0 10 0 0 0 20 0 1 0 180777150 3395584 569 18446744073709551615 134512640 134548440 4294956720 18446744073709551615 134530223 0 0 4096 0 0 0 0 17 1 0 0
/proc/18105/statm: 829 569 64 8 0 501 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3316

[startup+0.516404 s]
/proc/loadavg: 2.05 2.04 2.01 5/87 18106
/proc/meminfo: memFree=1195048/2055920 swapFree=4182144/4192956
[pid=18105] ppid=18103 vsize=9388 CPUtime=0.49
/proc/18105/stat : 18105 (VALCSP) R 18103 18105 17979 0 -1 4194304 2092 0 0 0 49 0 0 0 24 0 1 0 180777150 9613312 2070 18446744073709551615 134512640 134548440 4294956720 18446744073709551615 134524708 0 0 4096 0 0 0 0 17 1 0 0
/proc/18105/statm: 2347 2070 66 8 0 2019 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 9388

Child status: 0
Real time (s): 0.580309
CPU time (s): 0.567913
CPU user time (s): 0.558915
CPU system time (s): 0.008998
CPU usage (%): 97.8639
Max. virtual memory (cumulated for all children) (KiB): 9388

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.558915
system time used= 0.008998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 2121
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= 30

runsolver used 0.004999 s user time and 0.004999 s system time

The end

Launcher Data (download as text)

Begin job on node4 on Tue Jan  9 06:23:35 UTC 2007


IDJOB= 232636
IDBENCH= 6539
FILE ID= node4/232636-1168323815

PBS_JOBID= 3502712

Free space on /tmp= 66507 MiB

BENCH NAME= HOME/pub/bench/CPAI06/taillard/os-taillard-4/os-taillard-4-95-2.xml
COMMAND LINE= /tmp/evaluation/232636-1168323815/VALCSP /tmp/evaluation/232636-1168323815/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node4/watcher-232636-1168323815 -o ROOT/results/node4/solver-232636-1168323815 -C 1800 -M 900  /tmp/evaluation/232636-1168323815/VALCSP /tmp/evaluation/232636-1168323815/unknown.xml

META MD5SUM SOLVER= 6fc756be3a7e45a17a81a19ce431bc48
MD5SUM BENCH=  4fba640db4f884ad11082dd4c9db0fdf

RANDOM SEED= 698368355

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		: 3000.223
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		: 3000.223
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:       1195528 kB
Buffers:         98856 kB
Cached:         571248 kB
SwapCached:       2552 kB
Active:         524676 kB
Inactive:       272452 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1195528 kB
SwapTotal:     4192956 kB
SwapFree:      4182144 kB
Dirty:             396 kB
Writeback:           0 kB
Mapped:         137504 kB
Slab:            47756 kB
Committed_AS:  5425976 kB
PageTables:       2560 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= 66507 MiB



End job on node4 on Tue Jan  9 06:23:37 UTC 2007