Trace number 234777

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
Mistral 2006-12-04SAT 0.025995 0.0316569

General information on the benchmark

Nametaillard/os-taillard-5/
os-taillard-5-100-9.xml
MD5SUMe800ce74e73cd3339e6c31755904737b
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 benchmark0.025995
SatisfiableYES
(Un)Satisfiability was provedYES
Number of variables25
Number of constraints100
Maximum constraint arity2
Maximum domain size313
Number of constraints which are defined in extension0
Number of constraints which are defined in intension100
Global constraints used (with number of constraints)

Solver Data (download as text)

0.01	c 
0.01	c Parsing xml file
0.01	c 	domains...............    0
0.03	c 	variables.............    0
0.03	c 	predicates............    0
0.03	c 	constraints...........    0
0.03	c Allocating memory
0.03	c 
0.03	c time limit = -1
0.03	c heuristic = dom/wdeg
0.03	c restart policy = No restart
0.03	c 
0.03	c Solving
0.03	c
0.03	s SATISFIABLE
0.03	v 232 0 50 137 173 17 137 232 0 270 173 270 14 116 73 74 241 123 165 0 0 266 241 165 74
0.03	d          SAT       109 BTS         0 s

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/node55/watcher-234777-1168333232 -o ROOT/results/node55/solver-234777-1168333232 -C 1800 -M 900 /tmp/evaluation/234777-1168333232/mistral/bin/solver /tmp/evaluation/234777-1168333232/unknown.xml -v 1 

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: 1.99 1.98 1.93 5/74 15105
/proc/meminfo: memFree=1818168/2055920 swapFree=4192192/4192956
[pid=15104] ppid=15102 vsize=540 CPUtime=0
/proc/15104/stat : 15104 (solver) D 15102 15104 14047 0 -1 4194304 41 0 0 0 0 0 0 0 21 0 1 0 181721506 552960 26 18446744073709551615 134512640 134893201 4294956688 18446744073709551615 6849316 0 2147483391 4096 0 18446744072099781622 0 0 17 1 0 0
/proc/15104/statm: 135 26 21 92 0 18 0

Child status: 0
Real time (s): 0.0316569
CPU time (s): 0.025995
CPU user time (s): 0.019996
CPU system time (s): 0.005999
CPU usage (%): 82.1148
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.019996
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 913
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= 13
involuntary context switches= 1

runsolver used 0.001999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node55 on Tue Jan  9 09:00:32 UTC 2007


IDJOB= 234777
IDBENCH= 6711
FILE ID= node55/234777-1168333232

PBS_JOBID= 3503258

Free space on /tmp= 66561 MiB

BENCH NAME= HOME/pub/bench/CPAI06/taillard/os-taillard-5/os-taillard-5-100-9.xml
COMMAND LINE= /tmp/evaluation/234777-1168333232/mistral/bin/solver /tmp/evaluation/234777-1168333232/unknown.xml -v 1
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node55/watcher-234777-1168333232 -o ROOT/results/node55/solver-234777-1168333232 -C 1800 -M 900  /tmp/evaluation/234777-1168333232/mistral/bin/solver /tmp/evaluation/234777-1168333232/unknown.xml -v 1

META MD5SUM SOLVER= cb80ed4ac975bdc0101f830a5b1b8f77
MD5SUM BENCH=  e800ce74e73cd3339e6c31755904737b

RANDOM SEED= 531944690

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:       1818584 kB
Buffers:         20284 kB
Cached:         138704 kB
SwapCached:        268 kB
Active:          88428 kB
Inactive:        93296 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1818584 kB
SwapTotal:     4192956 kB
SwapFree:      4192192 kB
Dirty:            2968 kB
Writeback:           0 kB
Mapped:          32960 kB
Slab:            41180 kB
Committed_AS:  4126868 kB
PageTables:       1696 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= 66561 MiB



End job on node55 on Tue Jan  9 09:00:32 UTC 2007