Trace number 232876

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 0.397938 0.409279

DiagnosticValue
CHECKS4929500
NODES4

General information on the benchmark

Nametaillard/
os-taillard-4/os-taillard-4-95-8.xml
MD5SUM1710571c9fbceaa3ebf9e7e0cbee2df2
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 size238
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)

0.40	s UNSATISFIABLE
0.40	d CHECKS 4.9295e+06
0.40	d NODES 4
0.40

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/node18/watcher-232876-1168324146 -o ROOT/results/node18/solver-232876-1168324146 -C 1800 -M 900 /tmp/evaluation/232876-1168324146/VALCSP /tmp/evaluation/232876-1168324146/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: 1.16 1.56 1.81 3/87 26694
/proc/meminfo: memFree=1330392/2055920 swapFree=4192812/4192956
[pid=26693] ppid=26691 vsize=1384 CPUtime=0
/proc/26693/stat : 26693 (VALCSP) R 26691 26693 25257 0 -1 4194304 72 0 0 0 0 0 0 0 21 0 1 0 180809790 1417216 56 18446744073709551615 134512640 134548440 4294956720 18446744073709551615 7830501 0 0 4096 0 0 0 0 17 1 0 0
/proc/26693/statm: 346 56 46 8 0 6 0

[startup+0.103498 s]
/proc/loadavg: 1.16 1.56 1.81 3/87 26694
/proc/meminfo: memFree=1330392/2055920 swapFree=4192812/4192956
[pid=26693] ppid=26691 vsize=3316 CPUtime=0.09
/proc/26693/stat : 26693 (VALCSP) R 26691 26693 25257 0 -1 4194304 569 0 0 0 9 0 0 0 21 0 1 0 180809790 3395584 547 18446744073709551615 134512640 134548440 4294956720 18446744073709551615 134530960 0 0 4096 0 0 0 0 17 1 0 0
/proc/26693/statm: 829 547 64 8 0 501 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3316

Child status: 0
Real time (s): 0.409279
CPU time (s): 0.397938
CPU user time (s): 0.38894
CPU system time (s): 0.008998
CPU usage (%): 97.229
Max. virtual memory (cumulated for all children) (KiB): 7144

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.38894
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= 1865
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= 10

runsolver used 0.003999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node18 on Tue Jan  9 06:29:10 UTC 2007


IDJOB= 232876
IDBENCH= 6561
FILE ID= node18/232876-1168324146

PBS_JOBID= 3502733

Free space on /tmp= 66528 MiB

BENCH NAME= HOME/pub/bench/CPAI06/taillard/os-taillard-4/os-taillard-4-95-8.xml
COMMAND LINE= /tmp/evaluation/232876-1168324146/VALCSP /tmp/evaluation/232876-1168324146/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node18/watcher-232876-1168324146 -o ROOT/results/node18/solver-232876-1168324146 -C 1800 -M 900  /tmp/evaluation/232876-1168324146/VALCSP /tmp/evaluation/232876-1168324146/unknown.xml

META MD5SUM SOLVER= 6fc756be3a7e45a17a81a19ce431bc48
MD5SUM BENCH=  1710571c9fbceaa3ebf9e7e0cbee2df2

RANDOM SEED= 248157685

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		: 3000.231
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		: 3000.231
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:       1330808 kB
Buffers:        101088 kB
Cached:         416256 kB
SwapCached:          0 kB
Active:         454504 kB
Inactive:       208224 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1330808 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:             732 kB
Writeback:           0 kB
Mapped:         165468 kB
Slab:            47236 kB
Committed_AS:  5544132 kB
PageTables:       2228 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= 66528 MiB



End job on node18 on Tue Jan  9 06:29:14 UTC 2007