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-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-lseu.opb
MD5SUM5fcfa2f72175b9723ffb2781fb76fcdc
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1120
Optimality of the best value was proved YES
Number of terms in the objective function 85
Biggest coefficient in the objective function 517
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 15494
Number of bits of the sum of numbers in the objective function 14
Biggest number in a constraint 1656
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 15494
Number of bits of the biggest sum of numbers14
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark667.773
Number of variables89
Total number of constraints117
Number of constraints which are clauses2
Number of constraints which are cardinality constraints (but not clauses)104
Number of constraints which are nor clauses,nor cardinality constraints11
Minimum length of a constraint1
Maximum length of a constraint47

Trace number 3732

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-19 03:02:46 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1689 boxname=wulflinc30 idbench=517 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  5fcfa2f72175b9723ffb2781fb76fcdc  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-lseu.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-lseu.opb
IDLAUNCH: 1689
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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	: 3
cpu MHz		: 451.072
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:        908756 kB
Buffers:         31920 kB
Cached:          63996 kB
SwapCached:        780 kB
Active:          44984 kB
Inactive:        53608 kB
HighTotal:      131008 kB
HighFree:        63952 kB
LowTotal:       903652 kB
LowFree:        844804 kB
SwapTotal:     2097892 kB
SwapFree:      2096636 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5732 kB
Slab:            21652 kB
Committed_AS:    64136 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 03:02:48 (client local time) WITH STATUS 10 IN 1.11383 SECONDS
stats: 1689 0 1.11383 10

Solver Data

c Decisions:	8045
c Implications:	79088
c RUNTIME:	1.00085s
v C101_bit0 C102_bit0 -C103_bit0 -C104_bit0 C105_bit0 -C108_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 -C128_bit0 -C129_bit0 C130_bit0 -C131_bit0 -C132_bit0 -C133_bit0 -C134_bit0 -C135_bit0 -C136_bit0 -C137_bit0 C138_bit0 -C139_bit0 -C140_bit0 -C141_bit0 -C142_bit0 -C143_bit0 -C144_bit0 -C145_bit0 C146_bit0 -C147_bit0 -C148_bit0 -C149_bit0 C150_bit0 -C151_bit0 -C152_bit0 -C153_bit0 -C154_bit0 -C155_bit0 -C156_bit0 -C157_bit0 C158_bit0 -C159_bit0 -C160_bit0 -C161_bit0 -C162_bit0 C163_bit0 -C164_bit0 -C165_bit0 -C166_bit0 -C167_bit0 -C168_bit0 -C169_bit0 C170_bit0 -C171_bit0 -C172_bit0 -C173_bit0 -C174_bit0 -C175_bit0 -C176_bit0 -C177_bit0 -C178_bit0 -C179_bit0 -C180_bit0 -C181_bit0 -C182_bit0 -C183_bit0 -C184_bit0 -C185_bit0 -C186_bit0 -C187_bit0 -C188_bit0 -C189_bit0 -C106_bit0 -C107_bit0 C109_bit0 -C110_bit0 
s SATISFIABLE

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/17528/stat): 17528 (galena) R 17527 17528 5245 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1846490300 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/17528/statm): 248 2 241 241 0 7 0
[pid=17528] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-lseu.opb
One traced child (pid=17528) exited with status: 10
All traced children have exited ! Game is over.

Child status: 10
Real time (s): 1.34126
CPU time (s): 1.11383
CPU user time (s): 1.00585
CPU system time (s): 0.107983
CPU usage (%): 83.0434
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	1498