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/MIPLIB/miplib/normalized-mps-v2-20-10-p0040.opb
MD5SUM1c249519911563f3292efb34f4875b44
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
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 numbers19
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.276957
Number of variables40
Total number of constraints63
Number of constraints which are clauses10
Number of constraints which are cardinality constraints (but not clauses)50
Number of constraints which are nor clauses,nor cardinality constraints3
Minimum length of a constraint1
Maximum length of a constraint10

Trace number 38733 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc4 THE 2005-06-02 16:19:39 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=26804 boxname=wulflinc4 idbench=932 idsolver=19 numberseed=0
MD5SUM SOLVER: 259c660e62244fe20bfb2a303545faea  /oldhome/oroussel/solvers/Pueblo-v2
MD5SUM BENCH:  1c249519911563f3292efb34f4875b44  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-p0040.opb
REAL COMMAND:  Pueblo-v2 /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-p0040.opb
IDLAUNCH: 26804
/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:        480888 kB
Buffers:         34704 kB
Cached:         496964 kB
SwapCached:        568 kB
Active:          34904 kB
Inactive:       498900 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        480636 kB
SwapTotal:     2097136 kB
SwapFree:      2095660 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5316 kB
Slab:            14204 kB
Committed_AS:    71788 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-02 16:20:13 (client local time) WITH STATUS 30 IN 33.188 SECONDS
stats: 26804 0 33.188 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Pueblo version 1.2 (Sept 2004)
c Developed @ University of Michigan, Ann Arbor, MI
c  by Hossein Sheini
c Solving: /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-p0040.opb
c #variables read: 40 - #constraints read: 64
c optimum objective found = 62027
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 
#### 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): 0.73 0.91 0.89 2/54 13952
Raw data (stat): 13952 (runsolver) R 13951 21152 21151 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 851166892 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+10.0001 s]
Raw data (loadavg): 0.77 0.91 0.89 2/54 13952
Raw data (stat): 13952 (Pueblo-v2) R 13951 21152 21151 0 -1 0 260 0 0 0 965 33 0 0 25 0 1 0 851166892 6696960 234 4294967295 134512640 134581267 3221224576 3221223640 1075514893 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 1635 234 566 18 0 1617 0
vsize: 6540
[startup+20.0006 s]
Raw data (loadavg): 0.81 0.91 0.89 2/54 13952
Raw data (stat): 13952 (Pueblo-v2) R 13951 21152 21151 0 -1 0 263 0 0 0 1926 73 0 0 25 0 1 0 851166892 6696960 237 4294967295 134512640 134581267 3221224576 3221223640 1075514893 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 1635 237 566 18 0 1617 0
vsize: 6540
[startup+30.0005 s]
Raw data (loadavg): 0.84 0.92 0.89 2/54 13952
Raw data (stat): 13952 (Pueblo-v2) R 13951 21152 21151 0 -1 0 266 0 0 0 2888 110 0 0 25 0 1 0 851166892 6696960 240 4294967295 134512640 134581267 3221224576 3221223640 1075514893 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 1635 240 566 18 0 1617 0
vsize: 6540
[startup+33.1914 s]
Raw data (loadavg): 0.85 0.92 0.89 1/53 13952
Raw data (stat): 13952 (Pueblo-v2) R 13951 21152 21151 0 -1 0 266 0 0 0 2888 110 0 0 25 0 1 0 851166892 6696960 240 4294967295 134512640 134581267 3221224576 3221223640 1075514893 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 1635 240 566 18 0 1617 0
vsize: 0

Child status: 30
Real time (s): 33.1912
CPU time (s): 33.188
CPU user time (s): 31.9611
CPU system time (s): 1.22681
CPU usage (%): 99.9902
Max. virtual memory (Kb): 6540
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	62027
#### END VERIFIER DATA ####