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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-dano3_3.opb
MD5SUM21464e866eda151b04d2fc7e4d1dba6a
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 30
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 134217728000
Number of bits of the biggest number in a constraint 37
Biggest sum of numbers in a constraint 569083166190
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables404796
Total number of constraints3778
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)72
Number of constraints which are nor clauses,nor cardinality constraints3706
Minimum length of a constraint1
Maximum length of a constraint15900

Trace number 5387

Launcher Data

LAUNCH ON wulflinc8 THE 2005-09-20 01:14:12 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1883 boxname=wulflinc8 idbench=711 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  21464e866eda151b04d2fc7e4d1dba6a  /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-dano3_3.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-dano3_3.opb
IDLAUNCH: 1883
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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	: 2
cpu MHz		: 451.007
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:        877736 kB
Buffers:          4460 kB
Cached:         126496 kB
SwapCached:        760 kB
Active:          66792 kB
Inactive:        66780 kB
HighTotal:      131008 kB
HighFree:         3836 kB
LowTotal:       903652 kB
LowFree:        873900 kB
SwapTotal:     2097136 kB
SwapFree:      2095848 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5704 kB
Slab:            17568 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 01:14:38 (client local time) WITH STATUS 0 IN 24.9302 SECONDS
stats: 1883 7 24.9302 0

Solver Data

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/18570/stat): 18570 (galena) R 18569 18570 27660 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1782699737 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18570/statm): 248 2 241 241 0 7 0
[pid=18570] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-dano3_3.opb

[startup+10.0031 s]
Raw data (loadavg): 0.81 0.89 0.96 2/56 18570
Raw data (/proc/18570/stat): 18570 (galena) R 18569 18570 27660 0 -1 0 3673 0 0 0 984 12 0 0 25 0 1 0 1782699737 14913536 3281 4294967295 134512640 135412752 3221224560 3221221808 134849250 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18570/statm): 3641 3281 241 241 0 3400 0
[pid=18570] vsize: 14564
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 14564

[startup+20.0029 s]
Raw data (loadavg): 0.84 0.90 0.96 2/56 18570
Raw data (/proc/18570/stat): 18570 (galena) R 18569 18570 27660 0 -1 0 7282 0 0 0 1970 24 0 0 25 0 1 0 1782699737 28475392 6440 4294967295 134512640 135412752 3221224560 3221222080 134841523 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/18570/statm): 6952 6440 241 241 0 6711 0
[pid=18570] vsize: 27808
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 27808
One traced child (pid=18570) ended because it received signal 6 (SIGABRT)
All traced children have exited ! Game is over.

Child ended because it received signal 6 (SIGABRT)
Real time (s): 25.0056
CPU time (s): 24.9302
CPU user time (s): 24.5643
CPU system time (s): 0.365944
CPU usage (%): 99.6986
Max. virtual memory (cumulated for all children) (Kb): 27808

Verifier Data

ERROR: no interpretation found !