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/submitted/sorensson/garden/normalized-g2x2.opb
MD5SUM	276f089932f6c452fdc3e3b93f688af7
Bench Category	optimization, small integers (OPTSMALLINT)
Has Objective Function	YES
Satisfiable	YES
(Un)Satisfiability was proved	YES
Best value of the objective function	2
Optimality of the best value was proved	NO
Number of terms in the objective function	4
Biggest coefficient in the objective function	1
Number of bits for the biggest coefficient in the objective function	1
Sum of the numbers in the objective function	4
Number of bits of the sum of numbers in the objective function	3
Biggest number in a constraint	1
Number of bits of the biggest number in a constraint	1
Biggest sum of numbers in a constraint	4
Number of bits of the biggest sum of numbers	3
Best result obtained on this benchmark	SAT
Best CPU time to get the best result obtained on this benchmark	0.004998
Number of variables	4
Total number of constraints	4
Number of constraints which are clauses	4
Number of constraints which are cardinality constraints (but not clauses)	0
Number of constraints which are nor clauses,nor cardinality constraints	0
Minimum length of a constraint	3
Maximum length of a constraint	3

Trace number 40921

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc2 THE 2005-06-09 02:42:58 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=28992 boxname=wulflinc2 idbench=378 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  276f089932f6c452fdc3e3b93f688af7  /oldhome/oroussel/tmp/wulflinc2/normalized-g2x2.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc2/normalized-g2x2.opb
IDLAUNCH: 28992
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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:        885796 kB
Buffers:         20472 kB
Cached:         103848 kB
SwapCached:       4472 kB
Active:          25044 kB
Inactive:       104340 kB
HighTotal:      131008 kB
HighFree:        28028 kB
LowTotal:       903652 kB
LowFree:        857768 kB
SwapTotal:     2097136 kB
SwapFree:      2091616 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           4992 kB
Slab:            13756 kB
Committed_AS:    71792 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 02:42:59 (client local time) WITH STATUS 30 IN 0.048991 SECONDS
stats: 28992 0 0.048991 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 4 variables and 4 constraints.
c After prepocess the problem consists of 4 variables and 4 constraints.
c preprocess terminated 0.026 s
c Initial Lower Bound: 2
c Lower Bound Elapsed time: 0.004
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 2 @ 0.036
s OPTIMUM FOUND
v x1 x2 -x3 -x4 
c Exit Code: 30
c Total time: 0.04 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): 0.85 0.97 0.91 2/54 18357
Raw data (stat): 18357 (runsolver) R 18356 31399 31398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 906766989 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+0.066729 s]
Raw data (loadavg): 0.85 0.97 0.91 1/53 18357
Raw data (stat): 18357 (runsolver) R 18356 31399 31398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 906766989 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 0

Child status: 30
Real time (s): 0.066476
CPU time (s): 0.048991
CPU user time (s): 0.028995
CPU system time (s): 0.019996
CPU usage (%): 73.6973
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	2
#### END VERIFIER DATA ####