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/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-standata.opb
MD5SUMd5b771efe8f3bc863eeca85beb6d9cd6
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 140
Biggest coefficient in the objective function 52428800
Number of bits for the biggest coefficient in the objective function 26
Sum of the numbers in the objective function 318766800
Number of bits of the sum of numbers in the objective function 29
Biggest number in a constraint 75573493760
Number of bits of the biggest number in a constraint 37
Biggest sum of numbers in a constraint 2374370081400
Number of bits of the biggest sum of numbers42
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables20142
Total number of constraints462
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 constraints462
Minimum length of a constraint8
Maximum length of a constraint14900

Trace number 5979

Launcher Data

LAUNCH ON wulflinc12 THE 2005-09-20 02:51:51 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2036 boxname=wulflinc12 idbench=864 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  d5b771efe8f3bc863eeca85beb6d9cd6  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-standata.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-standata.opb
IDLAUNCH: 2036
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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		: 451.091
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:        909592 kB
Buffers:         33216 kB
Cached:          61084 kB
SwapCached:        492 kB
Active:          42380 kB
Inactive:        54452 kB
HighTotal:      131008 kB
HighFree:        67788 kB
LowTotal:       903652 kB
LowFree:        841804 kB
SwapTotal:     2097136 kB
SwapFree:      2096072 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5884 kB
Slab:            22492 kB
Committed_AS:    64128 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 02:51:52 (client local time) WITH STATUS 0 IN 0.867867 SECONDS
stats: 2036 7 0.867867 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/10673/stat): 10673 (galena) R 10672 10673 8263 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1796838861 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/10673/statm): 248 2 241 241 0 7 0
[pid=10673] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-13-7-standata.opb
One traced child (pid=10673) 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): 0.879131
CPU time (s): 0.867867
CPU user time (s): 0.846871
CPU system time (s): 0.020996
CPU usage (%): 98.7187
Max. virtual memory (cumulated for all children) (Kb): 0



Verifier Data




ERROR: no interpretation found !