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-misc03.opb
MD5SUM91a12c778773a00a6198e856654cd609
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1077181440
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 3287149567
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 benchmark88.4496
Number of variables190
Total number of constraints255
Number of constraints which are clauses31
Number of constraints which are cardinality constraints (but not clauses)170
Number of constraints which are nor clauses,nor cardinality constraints54
Minimum length of a constraint1
Maximum length of a constraint169

Trace number 3930

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-19 04:09:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4035 boxname=wulflinc25 idbench=519 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  91a12c778773a00a6198e856654cd609  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc03.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc03.opb
IDLAUNCH: 4035
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.220
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		: 451.220
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:        893476 kB
Buffers:         36408 kB
Cached:          77752 kB
SwapCached:        896 kB
Active:          71816 kB
Inactive:        44976 kB
HighTotal:      131008 kB
HighFree:        51800 kB
LowTotal:       903652 kB
LowFree:        841676 kB
SwapTotal:     2097892 kB
SwapFree:      2096496 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5720 kB
Slab:            18616 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 04:09:20 (client local time) WITH STATUS 30 IN 10.3514 SECONDS
stats: 4035 0 10.3514 30

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc03.opb ......
c The optimum solution is:1077181440
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 -COL084_bit0 -COL085_bit0 -COL086_bit0 -COL087_bit0 -COL088_bit0 -COL089_bit0 -COL090_bit0 -COL091_bit0 -COL092_bit0 -COL093_bit0 COL094_bit0 -COL095_bit0 -COL096_bit0 -COL097_bit0 -COL098_bit0 -COL099_bit0 -COL100_bit0 -COL101_bit0 -COL102_bit0 -COL103_bit0 -COL104_bit0 -COL105_bit0 -COL106_bit0 -COL107_bit0 -COL108_bit0 -COL109_bit0 -COL110_bit0 -COL111_bit0 -COL112_bit0 -COL113_bit0 -COL114_bit0 -COL115_bit0 -COL116_bit0 -COL117_bit0 COL118_bit0 -COL119_bit0 -COL120_bit0 -COL121_bit0 -COL122_bit0 -COL123_bit0 -COL124_bit0 -COL125_bit0 -COL126_bit0 -COL127_bit0 -COL128_bit0 COL129_bit0 -COL130_bit0 -COL131_bit0 -COL132_bit0 -COL133_bit0 COL134_bit0 -COL135_bit0 -COL136_bit0 -COL137_bit0 -COL138_bit0 -COL139_bit0 -COL140_bit0 -COL141_bit0 -COL142_bit0 -COL143_bit0 -COL144_bit0 -COL145_bit0 -COL146_bit0 -COL147_bit0 COL148_bit0 COL149_bit0 -COL150_bit0 COL151_bit0 -COL152_bit0 COL153_bit0 -COL154_bit0 COL155_bit0 COL156_bit0 -COL157_bit0 COL158_bit0 -COL159_bit0 COL160_bit0 COL160_bit1 COL160_bit10 COL160_bit11 -COL160_bit12 -COL160_bit13 -COL160_bit14 -COL160_bit15 -COL160_bit16 -COL160_bit17 -COL160_bit18 -COL160_bit19 COL160_bit2 COL160_bit20 COL160_bit3 COL160_bit4 -COL160_bit5 -COL160_bit6 -COL160_bit7 COL160_bit8 -COL160_bit9 -COL160_bit_1 -COL160_bit_10 -COL160_bit_2 -COL160_bit_3 -COL160_bit_4 -COL160_bit_5 -COL160_bit_6 -COL160_bit_7 -COL160_bit_8 -COL160_bit_9 
c Done, CPU Time=10.3044

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/19735/stat): 19735 (PBS4) R 19734 19735 4419 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1846928290 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/19735/statm): 239 2 232 232 0 7 0
[pid=19735] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc03.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-misc03.opb

[startup+10.0023 s]
Raw data (loadavg): 0.81 0.94 0.97 1/56 19735
Raw data (/proc/19735/stat): 19735 (PBS4) T 19734 19735 4419 0 -1 0 921 0 0 0 942 20 0 0 25 0 1 0 1846928290 4227072 855 4294967295 134512640 135450776 3221224560 3221223420 135126769 0 0 5 0 3222434794 0 0 17 0 0 0
Raw data (/proc/19735/statm): 1032 855 232 232 0 800 0
[pid=19735] vsize: 4128
Current children cumulated CPU time (s) 9.62
Current children cumulated vsize (Kb) 4128
One traced child (pid=19735) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 10.7423
CPU time (s): 10.3514
CPU user time (s): 10.1365
CPU system time (s): 0.214967
CPU usage (%): 96.3617
Max. virtual memory (cumulated for all children) (Kb): 4128

Verifier Data

Verifier:	OK	1077181440