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:
  1. 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.
  2. SOLVER DATA
    This is the output of the solver (stdout and stderr).
  3. 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.
  4. 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

Namenormalized-opb/mps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-seba.opb
MD5SUM41b5898e0f1b65f739b9a89af7596ef6
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 2147483647
Optimality of the best value was proved NO
Number of terms in the objective function 7565
Biggest coefficient in the objective function 258342282854400
Number of bits for the biggest coefficient in the objective function 48
Sum of the numbers in the objective function 4664562894591719
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 258342282854400
Number of bits of the biggest number in a constraint 48
Biggest sum of numbers in a constraint 4664562894591719
Number of bits of the biggest sum of numbers53
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1259.63
Number of variables23376
Total number of constraints1029
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints1029
Minimum length of a constraint10
Maximum length of a constraint496

Trace number 17142 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc12 THE 2005-04-21 10:04:39 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11355 boxname=wulflinc12 idbench=874 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  41b5898e0f1b65f739b9a89af7596ef6  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-seba.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-seba.opb
IDLAUNCH: 11355
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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		: 451.091
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:        569848 kB
Buffers:         31420 kB
Cached:         411216 kB
SwapCached:        316 kB
Active:         109504 kB
Inactive:       335424 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        569596 kB
SwapTotal:     2097136 kB
SwapFree:      2096236 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5748 kB
Slab:            14272 kB
Committed_AS:    63584 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-21 10:04:40 (client local time) WITH STATUS 20 IN 0.199968 SECONDS
stats: 11355 7 0.199968 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-seba.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.06899
#### 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
Raw data (loadavg): 0.71 0.91 0.92 2/54 26082
Raw data (stat): 26082 (runsolver) R 26081 25285 25284 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 485993293 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.206424 s]
Raw data (loadavg): 0.71 0.91 0.92 1/53 26082
Raw data (stat): 26082 (runsolver) R 26081 25285 25284 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 485993293 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 20
Real time (s): 0.206134
CPU time (s): 0.199968
CPU user time (s): 0.165974
CPU system time (s): 0.033994
CPU usage (%): 97.0087
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####