PB'05 competition: run trace

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 in four parts:

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 provide some useful information on the computer.
SOLVER DATA
This is the output of the solver (stdout and stderr).
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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
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.
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.

General information on the benchmark

Name	normalized-opb/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-p0040.opb
MD5SUM	1c249519911563f3292efb34f4875b44
Bench Category	optimization, small integers (OPTSMALLINT)
Has Objective Function	YES
Satisfiable	YES
(Un)Satisfiability was proved	YES
Best value of the objective function	62027
Optimality of the best value was proved	NO
Number of terms in the objective function	40
Biggest coefficient in the objective function	8161
Number of bits for the biggest coefficient in the objective function	13
Sum of the numbers in the objective function	265332
Number of bits of the sum of numbers in the objective function	19
Biggest number in a constraint	8161
Number of bits of the biggest number in a constraint	13
Biggest sum of numbers in a constraint	265332
Number of bits of the biggest sum of numbers	19
Best result obtained on this benchmark	SAT
Best CPU time to get the best result obtained on this benchmark	0.276957
Number of variables	40
Total number of constraints	63
Number of constraints which are clauses	10
Number of constraints which are cardinality constraints (but not clauses)	50
Number of constraints which are nor clauses,nor cardinality constraints	3
Minimum length of a constraint	1
Maximum length of a constraint	10

Trace number 39905

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc4 THE 2005-06-07 22:22:00 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=27976 boxname=wulflinc4 idbench=932 idsolver=20 numberseed=0
MD5SUM SOLVER: f6aa7fb267fa9710116626be7e6d3048  /oldhome/oroussel/solvers/bsolo_lpr-v2
MD5SUM BENCH:  1c249519911563f3292efb34f4875b44  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-p0040.opb
REAL COMMAND:  bsolo_lpr-v2 /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-p0040.opb
IDLAUNCH: 27976
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        897596 kB
Buffers:          4952 kB
Cached:         109736 kB
SwapCached:        844 kB
Active:          23412 kB
Inactive:        93268 kB
HighTotal:      131008 kB
HighFree:        23856 kB
LowTotal:       903652 kB
LowFree:        873740 kB
SwapTotal:     2097136 kB
SwapFree:      2095228 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           4892 kB
Slab:            14680 kB
Committed_AS:    71796 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-07 22:22:00 (client local time) WITH STATUS 30 IN 0.347946 SECONDS
stats: 27976 0 0.347946 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 40 variables and 23 constraints.
c After prepocess the problem consists of 40 variables and 23 constraints.
c preprocess terminated 0.047 s
c Initial Lower Bound: 61830
c Lower Bound Elapsed time: 0.003
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 62129 @ 0.069
c NEW SOLUTION FOUND: 62119 @ 0.143
c NEW SOLUTION FOUND: 62027 @ 0.194
s OPTIMUM FOUND
v -C1001_bit0 C1002_bit0 -C1003_bit0 -C1004_bit0 -C1005_bit0 C1006_bit0 -C1007_bit0 -C1008_bit0 C1009_bit0 -C1010_bit0 -C1011_bit0 -C1012_bit0 -C1013_bit0 -C1014_bit0 C1015_bit0 -C1016_bit0 -C1017_bit0 C1018_bit0 -C1019_bit0 -C1020_bit0 -C1021_bit0 C1022_bit0 -C1023_bit0 -C1024_bit0 -C1025_bit0 C1026_bit0 -C1027_bit0 -C1028_bit0 C1029_bit0 -C1030_bit0 -C1031_bit0 -C1032_bit0 -C1033_bit0 C1034_bit0 -C1035_bit0 -C1036_bit0 -C1037_bit0 C1038_bit0 -C1039_bit0 -C1040_bit0 
c Exit Code: 30
c Total time: 0.341 s
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.75 0.91 0.89 2/54 21904
Raw data (stat): 21904 (runsolver) R 21903 21152 21151 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 896546615 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+0.368016 s]
Raw data (loadavg): 0.75 0.91 0.89 1/53 21904
Raw data (stat): 21904 (runsolver) R 21903 21152 21151 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 896546615 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 0

Child status: 30
Real time (s): 0.367738
CPU time (s): 0.347946
CPU user time (s): 0.309952
CPU system time (s): 0.037994
CPU usage (%): 94.6179
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	62027
#### END VERIFIER DATA ####