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-misc01.opb
MD5SUMa96963da6c162c27e4853a5140494bde
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1074317824
Optimality of the best value was proved YES
Number of terms in the objective function 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1073741824
Number of bits of the biggest number in a constraint 31
Biggest sum of numbers in a constraint 3223595007
Number of bits of the biggest sum of numbers32
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark2.37864
Number of variables113
Total number of constraints136
Number of constraints which are clauses15
Number of constraints which are cardinality constraints (but not clauses)88
Number of constraints which are nor clauses,nor cardinality constraints33
Minimum length of a constraint1
Maximum length of a constraint101

Trace number 3962

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-19 04:28:23 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4068 boxname=wulflinc18 idbench=552 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  a96963da6c162c27e4853a5140494bde  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb
IDLAUNCH: 4068
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.177
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		: 451.177
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:        885868 kB
Buffers:         35968 kB
Cached:          78924 kB
SwapCached:        844 kB
Active:          53660 kB
Inactive:        63860 kB
HighTotal:      131008 kB
HighFree:        48860 kB
LowTotal:       903652 kB
LowFree:        837008 kB
SwapTotal:     2097892 kB
SwapFree:      2096548 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5764 kB
Slab:            25512 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 04:28:24 (client local time) WITH STATUS 30 IN 0.420935 SECONDS
stats: 4068 0 0.420935 30

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb ......
c The optimum solution is:1074317824
s OPTIMUM FOUND
v -COL001_bit0 -COL002_bit0 -COL003_bit0 -COL004_bit0 -COL005_bit0 -COL006_bit0 -COL007_bit0 -COL008_bit0 -COL009_bit0 COL010_bit0 -COL011_bit0 -COL012_bit0 -COL013_bit0 COL014_bit0 -COL015_bit0 -COL016_bit0 -COL017_bit0 -COL018_bit0 -COL019_bit0 -COL020_bit0 -COL021_bit0 -COL022_bit0 -COL023_bit0 -COL024_bit0 -COL025_bit0 -COL026_bit0 -COL027_bit0 -COL028_bit0 -COL029_bit0 -COL030_bit0 COL031_bit0 -COL032_bit0 -COL033_bit0 -COL034_bit0 -COL035_bit0 -COL036_bit0 -COL037_bit0 -COL038_bit0 -COL039_bit0 -COL040_bit0 -COL041_bit0 -COL042_bit0 -COL043_bit0 -COL044_bit0 -COL045_bit0 -COL046_bit0 COL047_bit0 -COL048_bit0 -COL049_bit0 -COL050_bit0 -COL051_bit0 COL052_bit0 -COL053_bit0 -COL054_bit0 -COL055_bit0 -COL056_bit0 -COL057_bit0 -COL058_bit0 -COL059_bit0 -COL060_bit0 -COL061_bit0 -COL062_bit0 -COL063_bit0 -COL064_bit0 COL065_bit0 -COL066_bit0 -COL067_bit0 -COL068_bit0 -COL069_bit0 -COL070_bit0 -COL071_bit0 -COL072_bit0 COL073_bit0 COL074_bit0 COL075_bit0 -COL076_bit0 COL077_bit0 -COL078_bit0 -COL079_bit0 COL080_bit0 -COL081_bit0 COL082_bit0 -COL083_bit0 COL083_bit1 -COL083_bit10 -COL083_bit11 -COL083_bit12 -COL083_bit13 -COL083_bit14 -COL083_bit15 -COL083_bit16 -COL083_bit17 -COL083_bit18 -COL083_bit19 -COL083_bit2 COL083_bit20 -COL083_bit3 COL083_bit4 COL083_bit5 -COL083_bit6 -COL083_bit7 -COL083_bit8 COL083_bit9 COL083_bit_1 -COL083_bit_10 -COL083_bit_2 -COL083_bit_3 -COL083_bit_4 -COL083_bit_5 -COL083_bit_6 -COL083_bit_7 -COL083_bit_8 -COL083_bit_9 
c Done, CPU Time=0.398939

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/17068/stat): 17068 (PBS4) R 17067 17068 31027 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1846982827 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/17068/statm): 239 2 232 232 0 7 0
[pid=17068] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-misc01.opb
One traced child (pid=17068) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 0.474203
CPU time (s): 0.420935
CPU user time (s): 0.39294
CPU system time (s): 0.027995
CPU usage (%): 88.7668
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	1074317824