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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-pilot.opb
MD5SUMd9327b817828dc5afade576c2194d741
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 840
Biggest coefficient in the objective function 3784939929600
Number of bits for the biggest coefficient in the objective function 42
Sum of the numbers in the objective function 93738734889723
Number of bits of the sum of numbers in the objective function 47
Biggest number in a constraint 13851269529600000
Number of bits of the biggest number in a constraint 54
Biggest sum of numbers in a constraint 368128606591816686
Number of bits of the biggest sum of numbers59
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark19.1041
Number of variables86785
Total number of constraints2515
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints2515
Minimum length of a constraint10
Maximum length of a constraint7620

Trace number 2768

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-18 21:42:39 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3966 boxname=wulflinc18 idbench=450 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  d9327b817828dc5afade576c2194d741  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-pilot.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-pilot.opb
IDLAUNCH: 3966
/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:        903904 kB
Buffers:         23100 kB
Cached:          73024 kB
SwapCached:        844 kB
Active:          49752 kB
Inactive:        49008 kB
HighTotal:      131008 kB
HighFree:        54768 kB
LowTotal:       903652 kB
LowFree:        849136 kB
SwapTotal:     2097892 kB
SwapFree:      2096548 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5764 kB
Slab:            26192 kB
Committed_AS:    64180 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 21:44:22 (client local time) WITH STATUS 20 IN 102.057 SECONDS
stats: 3966 7 102.057 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-pilot.opb ......
s UNSATISFIABLE
c Done, CPU Time=1.45178

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/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1844548197 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 239 2 232 232 0 7 0
[pid=6925] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-pilot.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-pilot.opb

[startup+10.0025 s]
Raw data (loadavg): 0.98 0.96 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 4602 0 0 0 981 15 0 0 25 0 1 0 1844548197 19681280 4487 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 4805 4487 232 232 0 4573 0
[pid=6925] vsize: 19220
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 19220

[startup+20.0034 s]
Raw data (loadavg): 0.98 0.96 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 5057 0 0 0 1978 18 0 0 25 0 1 0 1844548197 21606400 4942 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 5275 4942 232 232 0 5043 0
[pid=6925] vsize: 21100
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 21100

[startup+30.0044 s]
Raw data (loadavg): 0.98 0.96 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 5798 0 0 0 2973 22 0 0 25 0 1 0 1844548197 24584192 5683 4294967295 134512640 135450776 3221224560 3221223056 134524253 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 6002 5683 232 232 0 5770 0
[pid=6925] vsize: 24008
Current children cumulated CPU time (s) 29.95
Current children cumulated vsize (Kb) 24008

[startup+40.0043 s]
Raw data (loadavg): 0.99 0.96 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 6307 0 0 0 3969 24 0 0 25 0 1 0 1844548197 26808320 6192 4294967295 134512640 135450776 3221224560 3221223072 134600390 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/6925/statm): 6545 6192 232 232 0 6313 0
[pid=6925] vsize: 26180
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 26180

[startup+50.0052 s]
Raw data (loadavg): 0.99 0.96 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 6929 0 0 0 4962 29 0 0 25 0 1 0 1844548197 29376512 6814 4294967295 134512640 135450776 3221224560 3221222932 134524520 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 7172 6814 232 232 0 6940 0
[pid=6925] vsize: 28688
Current children cumulated CPU time (s) 49.91
Current children cumulated vsize (Kb) 28688

[startup+60.0051 s]
Raw data (loadavg): 0.99 0.96 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 9210 0 0 0 5955 35 0 0 25 0 1 0 1844548197 38273024 9062 4294967295 134512640 135450776 3221224560 3221222800 134843732 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 9344 9063 232 232 0 9112 0
[pid=6925] vsize: 37376
Current children cumulated CPU time (s) 59.9
Current children cumulated vsize (Kb) 37376

[startup+70.005 s]
Raw data (loadavg): 0.99 0.97 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 9328 0 0 0 6954 36 0 0 25 0 1 0 1844548197 38768640 9180 4294967295 134512640 135450776 3221224560 3221223072 134601217 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 9465 9180 232 232 0 9233 0
[pid=6925] vsize: 37860
Current children cumulated CPU time (s) 69.9
Current children cumulated vsize (Kb) 37860

[startup+80.006 s]
Raw data (loadavg): 0.99 0.97 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 9373 0 0 0 7953 36 0 0 25 0 1 0 1844548197 39297024 9225 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 9594 9225 232 232 0 9362 0
[pid=6925] vsize: 38376
Current children cumulated CPU time (s) 79.89
Current children cumulated vsize (Kb) 38376

[startup+90.0059 s]
Raw data (loadavg): 0.99 0.97 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 9507 0 0 0 8949 39 0 0 25 0 1 0 1844548197 39854080 9359 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 9730 9359 232 232 0 9498 0
[pid=6925] vsize: 38920
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 38920

[startup+100.006 s]
Raw data (loadavg): 0.99 0.97 0.94 2/56 6925
Raw data (/proc/6925/stat): 6925 (PBS4) R 6924 6925 31027 0 -1 0 9643 0 0 0 9946 42 0 0 25 0 1 0 1844548197 40448000 9495 4294967295 134512640 135450776 3221224560 3221223072 134600038 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/6925/statm): 9875 9495 232 232 0 9643 0
[pid=6925] vsize: 39500
Current children cumulated CPU time (s) 99.88
Current children cumulated vsize (Kb) 39500
One traced child (pid=6925) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 102.179
CPU time (s): 102.057
CPU user time (s): 101.559
CPU system time (s): 0.498924
CPU usage (%): 99.881
Max. virtual memory (cumulated for all children) (Kb): 39500

Verifier Data

ERROR: no interpretation found !