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).
    Note that some very long lines in this section may be truncated by your web browser !
  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

Namemps-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-bm23.opb
MD5SUM9e4c4999c6f95fcef879d3d86840d71a
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 34
Optimality of the best value was proved YES
Number of terms in the objective function 27
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 124
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 65
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 182
Number of bits of the biggest sum of numbers8
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.287955
Number of variables27
Total number of constraints47
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)27
Number of constraints which are nor clauses,nor cardinality constraints20
Minimum length of a constraint1
Maximum length of a constraint26

Trace number 10339

Launcher Data

LAUNCH ON wulflinc4 THE 2005-09-23 17:53:00 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9092 boxname=wulflinc4 idbench=888 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  9e4c4999c6f95fcef879d3d86840d71a  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-bm23.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-bm23.opb
IDLAUNCH: 9092
/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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        928904 kB
Buffers:         12724 kB
Cached:          76016 kB
SwapCached:          0 kB
Active:          44152 kB
Inactive:        47476 kB
HighTotal:      131008 kB
HighFree:        50708 kB
LowTotal:       903652 kB
LowFree:        878196 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8572 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:53:49 (client local time) WITH STATUS 30 IN 48.1857 SECONDS
stats: 9092 0 48.1857 30

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 64
c small objective detected
c CONFLICT during preprocess 
c [startup+0.435647 s]  setting bit 6 to 0
c [startup+9.17771 s]  setting bit 5 to 0
c got solution with objective value: 45
c [startup+10.7959 s]  setting bit 4 to 1

c Decision: 488/8092	Time: 11.4713/86400
c got solution with objective value: 38
c [startup+26.0098 s]  setting bit 3 to 1

c Decision: 515/8092	Time: 7.12992/86400
c got solution with objective value: 35
c [startup+38.3692 s]  setting bit 2 to 1

c [startup+45.2171 s]  setting bit 1 to 0

c got solution with objective value: 34
c [startup+48.5767 s]  setting bit 0 to 1
s OPTIMUM FOUND
v -C101_bit0 -C102_bit0 C103_bit0 -C104_bit0 C105_bit0 -C106_bit0 -C107_bit0 -C108_bit0 C109_bit0 -C110_bit0 -C111_bit0 -C112_bit0 -C113_bit0 -C114_bit0 C115_bit0 -C116_bit0 C117_bit0 -C118_bit0 -C119_bit0 C120_bit0 -C121_bit0 C122_bit0 -C123_bit0 -C124_bit0 -C125_bit0 -C126_bit0 C127_bit0

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/10029/stat): 10029 (pb2sat) R 10028 10029 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 22153607 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/10029/statm): 373 2 364 364 0 9 0
[pid=10029] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-bm23.opb

[startup+10.0021 s]
Raw data (loadavg): 0.92 0.97 0.96 2/55 10029
Raw data (/proc/10029/stat): 10029 (pb2sat) R 10028 10029 4060 0 -1 0 1244 0 0 0 983 6 0 0 25 0 1 0 22153607 5410816 960 4294967295 134512640 135987407 3221224560 3221223104 134811950 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10029/statm): 1321 960 364 364 0 957 0
[pid=10029] vsize: 5284
Current children cumulated CPU time (s) 9.89
Current children cumulated vsize (Kb) 5284

[startup+20.003 s]
Raw data (loadavg): 0.93 0.97 0.96 2/55 10029
Raw data (/proc/10029/stat): 10029 (pb2sat) R 10028 10029 4060 0 -1 0 1495 0 0 0 1969 12 0 0 25 0 1 0 22153607 6287360 1018 4294967295 134512640 135987407 3221224560 3221223104 134811729 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10029/statm): 1535 1018 364 364 0 1171 0
[pid=10029] vsize: 6140
Current children cumulated CPU time (s) 19.81
Current children cumulated vsize (Kb) 6140

[startup+30.0038 s]
Raw data (loadavg): 0.94 0.97 0.96 2/55 10029
Raw data (/proc/10029/stat): 10029 (pb2sat) R 10028 10029 4060 0 -1 0 1552 0 0 0 2958 16 0 0 25 0 1 0 22153607 6385664 1075 4294967295 134512640 135987407 3221224560 3221223264 134789985 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10029/statm): 1559 1075 364 364 0 1195 0
[pid=10029] vsize: 6236
Current children cumulated CPU time (s) 29.74
Current children cumulated vsize (Kb) 6236

[startup+40.0037 s]
Raw data (loadavg): 0.95 0.97 0.96 2/55 10029
Raw data (/proc/10029/stat): 10029 (pb2sat) R 10028 10029 4060 0 -1 0 1624 0 0 0 3945 21 0 0 25 0 1 0 22153607 6488064 1147 4294967295 134512640 135987407 3221224560 3221223104 134811992 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/10029/statm): 1584 1147 364 364 0 1220 0
[pid=10029] vsize: 6336
Current children cumulated CPU time (s) 39.66
Current children cumulated vsize (Kb) 6336
One traced child (pid=10029) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 48.599
CPU time (s): 48.1857
CPU user time (s): 47.9237
CPU system time (s): 0.26196
CPU usage (%): 99.1496
Max. virtual memory (cumulated for all children) (Kb): 6336

Verifier Data

Verifier:	OK	34