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-misc02.opb
MD5SUM5128a094f3f47af1a66bc4eb5109f150
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1264768
Optimality of the best value was proved YES
Number of terms in the objective function 21
Biggest coefficient in the objective function 1048576
Number of bits for the biggest coefficient in the objective function 21
Sum of the numbers in the objective function 2097151
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 1048576
Number of bits of the biggest number in a constraint 21
Biggest sum of numbers in a constraint 4762239
Number of bits of the biggest sum of numbers23
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.090985
Number of variables79
Total number of constraints97
Number of constraints which are clauses7
Number of constraints which are cardinality constraints (but not clauses)65
Number of constraints which are nor clauses,nor cardinality constraints25
Minimum length of a constraint1
Maximum length of a constraint69

Trace number 6525

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-20 07:29:24 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4418 boxname=wulflinc30 idbench=902 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  5128a094f3f47af1a66bc4eb5109f150  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-misc02.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-misc02.opb
IDLAUNCH: 4418
/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:        854700 kB
Buffers:         33612 kB
Cached:         116768 kB
SwapCached:        784 kB
Active:          57916 kB
Inactive:        95092 kB
HighTotal:      131008 kB
HighFree:        24360 kB
LowTotal:       903652 kB
LowFree:        830340 kB
SwapTotal:     2097892 kB
SwapFree:      2096640 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5744 kB
Slab:            21260 kB
Committed_AS:    64304 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 07:29:25 (client local time) WITH STATUS 30 IN 0.090985 SECONDS
stats: 4418 0 0.090985 30

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-misc02.opb ......
c The optimum solution is:1264768
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 -COL059_bit1 COL059_bit10 -COL059_bit11 -COL059_bit12 COL059_bit13 -COL059_bit2 COL059_bit3 COL059_bit4 -COL059_bit5 -COL059_bit6 COL059_bit7 -COL059_bit8 COL059_bit9 -COL059_bit_1 -COL059_bit_2 -COL059_bit_3 -COL059_bit_4 -COL059_bit_5 -COL059_bit_6 -COL059_bit_7 
c Done, CPU Time=0.072988

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/4776/stat): 4776 (PBS4) R 4775 4776 5245 0 -1 0 18 0 0 0 0 0 0 0 19 0 1 0 1856731425 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/4776/statm): 239 2 232 232 0 7 0
[pid=4776] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-misc02.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-13-7-misc02.opb
One traced child (pid=4776) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 0.108675
CPU time (s): 0.090985
CPU user time (s): 0.079987
CPU system time (s): 0.010998
CPU usage (%): 83.7221
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	1264768