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/miplib3/normalized-mps-v2-20-10-enigma.opb
MD5SUM438e2455c0b7b4efdea6a7e48ef2555a
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 0
Optimality of the best value was proved NO
Number of terms in the objective function 9
Biggest coefficient in the objective function 9
Number of bits for the biggest coefficient in the objective function 4
Sum of the numbers in the objective function 45
Number of bits of the sum of numbers in the objective function 6
Biggest number in a constraint 900207
Number of bits of the biggest number in a constraint 20
Biggest sum of numbers in a constraint 9508275
Number of bits of the biggest sum of numbers24
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.417936
Number of variables100
Total number of constraints121
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)120
Number of constraints which are nor clauses,nor cardinality constraints1
Minimum length of a constraint1
Maximum length of a constraint90

Trace number 28281 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc24 THE 2005-05-25 01:41:37 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=13319 boxname=wulflinc24 idbench=1025 idsolver=7 numberseed=0
MD5SUM SOLVER: d9a5994a76be78982e492b397ce73911  /oldhome/oroussel/solvers/Pueblo
MD5SUM BENCH:  438e2455c0b7b4efdea6a7e48ef2555a  /oldhome/oroussel/tmp/wulflinc24/normalized-mps-v2-20-10-enigma.opb
REAL COMMAND:  Pueblo /oldhome/oroussel/tmp/wulflinc24/normalized-mps-v2-20-10-enigma.opb
IDLAUNCH: 13319
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.080
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	: 3
cpu MHz		: 451.080
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:        747896 kB
Buffers:         10812 kB
Cached:         253292 kB
SwapCached:        620 kB
Active:          34748 kB
Inactive:       231812 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        747644 kB
SwapTotal:     2097892 kB
SwapFree:      2096776 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5652 kB
Slab:            14404 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-25 01:42:15 (client local time) WITH STATUS 30 IN 37.5213 SECONDS
stats: 13319 0 37.5213 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/wulflinc24/normalized-mps-v2-20-10-enigma.opb
c #variables read: 100 - #constraints read: 143
c optimum objective found = 0
s OPTIMUM FOUND
v -A1_bit0 -A2_bit0 -A3_bit0 -A4_bit0 -A5_bit0 -A6_bit0 -A7_bit0 -A8_bit0 -A9_bit0 A0_bit0 -B0_bit0 -B1_bit0 -B2_bit0 -B3_bit0 -B4_bit0 -B5_bit0 -B6_bit0 -B7_bit0 B8_bit0 -B9_bit0 -C0_bit0 -C1_bit0 -C2_bit0 -C3_bit0 -C4_bit0 C5_bit0 -C6_bit0 -C7_bit0 -C8_bit0 -C9_bit0 -D0_bit0 -D1_bit0 -D2_bit0 -D3_bit0 -D4_bit0 -D5_bit0 D6_bit0 -D7_bit0 -D8_bit0 -D9_bit0 -E0_bit0 -E1_bit0 -E2_bit0 -E3_bit0 E4_bit0 -E5_bit0 -E6_bit0 -E7_bit0 -E8_bit0 -E9_bit0 -F0_bit0 -F1_bit0 -F2_bit0 -F3_bit0 -F4_bit0 -F5_bit0 -F6_bit0 -F7_bit0 -F8_bit0 F9_bit0 -G0_bit0 G1_bit0 -G2_bit0 -G3_bit0 -G4_bit0 -G5_bit0 -G6_bit0 -G7_bit0 -G8_bit0 -G9_bit0 -H0_bit0 -H1_bit0 -H2_bit0 -H3_bit0 -H4_bit0 -H5_bit0 -H6_bit0 H7_bit0 -H8_bit0 -H9_bit0 -I0_bit0 -I1_bit0 I2_bit0 -I3_bit0 -I4_bit0 -I5_bit0 -I6_bit0 -I7_bit0 -I8_bit0 -I9_bit0 -L0_bit0 -L1_bit0 -L2_bit0 L3_bit0 -L4_bit0 -L5_bit0 -L6_bit0 -L7_bit0 -L8_bit0 -L9_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
Raw data (loadavg): 0.81 0.90 0.90 2/54 12147
Raw data (stat): 12147 (runsolver) R 12146 4613 4612 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 834996785 1052672 99 4294967295 134512640 135381576 3221224496 3221219716 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0006 s]
Raw data (loadavg): 0.84 0.90 0.90 2/54 12147
Raw data (stat): 12147 (Pueblo) R 12146 4613 4612 0 -1 0 326 0 0 0 997 1 0 0 25 0 1 0 834996785 6963200 304 4294967295 134512640 134581331 3221224592 3221223560 134527301 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 1700 304 566 18 0 1682 0
vsize: 6800
[startup+20.0018 s]
Raw data (loadavg): 0.87 0.90 0.90 2/54 12147
Raw data (stat): 12147 (Pueblo) R 12146 4613 4612 0 -1 0 341 0 0 0 1993 5 0 0 25 0 1 0 834996785 7094272 319 4294967295 134512640 134581331 3221224592 3221223504 134527459 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 1732 319 566 18 0 1714 0
vsize: 6928
[startup+30.0021 s]
Raw data (loadavg): 0.89 0.91 0.90 2/54 12147
Raw data (stat): 12147 (Pueblo) R 12146 4613 4612 0 -1 0 347 0 0 0 2989 9 0 0 25 0 1 0 834996785 7094272 325 4294967295 134512640 134581331 3221224592 3221223656 1075514893 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 1732 325 566 18 0 1714 0
vsize: 6928
[startup+37.5414 s]
Raw data (loadavg): 0.89 0.91 0.90 1/53 12147
Raw data (stat): 12147 (Pueblo) R 12146 4613 4612 0 -1 0 347 0 0 0 2989 9 0 0 25 0 1 0 834996785 7094272 325 4294967295 134512640 134581331 3221224592 3221223656 1075514893 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 1732 325 566 18 0 1714 0
vsize: 0

Child status: 30
Real time (s): 37.5409
CPU time (s): 37.5213
CPU user time (s): 37.4083
CPU system time (s): 0.112982
CPU usage (%): 99.9478
Max. virtual memory (Kb): 6928
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	0
#### END VERIFIER DATA ####