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/miplib2003/normalized-mps-v2-13-7-mas74.opb
MD5SUM4f5abf3617135e01dd6fd08d8fd20e49
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 26214396943
Optimality of the best value was proved NO
Number of terms in the objective function 237
Biggest coefficient in the objective function 241785163922925834941235200000
Number of bits for the biggest coefficient in the objective function 98
Sum of the numbers in the objective function 483570327845851669882470400000
Number of bits of the sum of numbers in the objective function 99
Biggest number in a constraint 604462909807314587353088000000000
Number of bits of the biggest number in a constraint 109
Biggest sum of numbers in a constraint 1208925819614629174706176000000000
Number of bits of the biggest sum of numbers110
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark7.32189
Number of variables237
Total number of constraints164
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)151
Number of constraints which are nor clauses,nor cardinality constraints13
Minimum length of a constraint1
Maximum length of a constraint236

Trace number 5635

Launcher Data

LAUNCH ON wulflinc21 THE 2005-09-20 01:20:50 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2130 boxname=wulflinc21 idbench=958 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  4f5abf3617135e01dd6fd08d8fd20e49  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-13-7-mas74.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-13-7-mas74.opb
IDLAUNCH: 2130
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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:        892580 kB
Buffers:         30336 kB
Cached:          81212 kB
SwapCached:        788 kB
Active:          35604 kB
Inactive:        78452 kB
HighTotal:      131008 kB
HighFree:        46900 kB
LowTotal:       903652 kB
LowFree:        845680 kB
SwapTotal:     2097892 kB
SwapFree:      2096456 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5700 kB
Slab:            22060 kB
Committed_AS:    64368 kB
PageTables:        340 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 01:20:51 (client local time) WITH STATUS 0 IN 0.018996 SECONDS
stats: 2130 7 0.018996 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/11083/stat): 11083 (galena) R 11082 11083 20602 0 -1 0 18 0 0 0 0 0 0 0 25 0 1 0 1731802248 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/11083/statm): 248 2 241 241 0 7 0
[pid=11083] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-13-7-mas74.opb
One traced child (pid=11083) 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): 0.023511
CPU time (s): 0.018996
CPU user time (s): 0.016997
CPU system time (s): 0.001999
CPU usage (%): 80.7962
Max. virtual memory (cumulated for all children) (Kb): 0



Verifier Data




ERROR: no interpretation found !