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-sentoy.opb
MD5SUM4df3e7eb358d27d446e34b975724a6c1
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -7772
Optimality of the best value was proved NO
Number of terms in the objective function 60
Biggest coefficient in the objective function 974
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 9460
Number of bits of the sum of numbers in the objective function 14
Biggest number in a constraint 6000
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 26162
Number of bits of the biggest sum of numbers15
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1227.4
Number of variables60
Total number of constraints90
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)60
Number of constraints which are nor clauses,nor cardinality constraints30
Minimum length of a constraint1
Maximum length of a constraint60

Trace number 3754

Launcher Data

LAUNCH ON wulflinc28 THE 2005-09-19 03:03:26 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1712 boxname=wulflinc28 idbench=540 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  4df3e7eb358d27d446e34b975724a6c1  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-sentoy.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-sentoy.opb
IDLAUNCH: 1712
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.077
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		: 451.077
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:        894404 kB
Buffers:         35156 kB
Cached:          76824 kB
SwapCached:        696 kB
Active:          72324 kB
Inactive:        42220 kB
HighTotal:      131008 kB
HighFree:        50568 kB
LowTotal:       903652 kB
LowFree:        843836 kB
SwapTotal:     2097640 kB
SwapFree:      2096372 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5812 kB
Slab:            20072 kB
Committed_AS:    64164 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 03:03:27 (client local time) WITH STATUS 10 IN 1.08383 SECONDS
stats: 1712 0 1.08383 10

Solver Data

c Decisions:	4010
c Implications:	33154
c RUNTIME:	1.00185s
v -Y1_bit0 Y2_bit0 -Y3_bit0 -Y4_bit0 Y5_bit0 -Y6_bit0 -Y7_bit0 Y8_bit0 -Y9_bit0 -Y10_bit0 -Y11_bit0 -Y12_bit0 -Y13_bit0 Y14_bit0 -Y15_bit0 Y16_bit0 -Y17_bit0 Y18_bit0 Y19_bit0 -Y20_bit0 Y21_bit0 -Y22_bit0 -Y23_bit0 -Y24_bit0 Y25_bit0 -Y26_bit0 Y27_bit0 -Y28_bit0 -Y29_bit0 Y30_bit0 -Y31_bit0 -Y32_bit0 -Y33_bit0 -Y34_bit0 -Y35_bit0 -Y36_bit0 Y37_bit0 -Y38_bit0 Y39_bit0 -Y40_bit0 -Y41_bit0 -Y42_bit0 -Y43_bit0 -Y44_bit0 -Y45_bit0 Y46_bit0 Y47_bit0 -Y48_bit0 -Y49_bit0 -Y50_bit0 -Y51_bit0 -Y52_bit0 Y53_bit0 -Y54_bit0 -Y55_bit0 Y56_bit0 Y57_bit0 -Y58_bit0 Y59_bit0 -Y60_bit0 
s SATISFIABLE

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/8187/stat): 8187 (galena) R 8186 8187 20115 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1846517341 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8187/statm): 248 2 241 241 0 7 0
[pid=8187] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-sentoy.opb
One traced child (pid=8187) exited with status: 10
All traced children have exited ! Game is over.

Child status: 10
Real time (s): 1.22659
CPU time (s): 1.08383
CPU user time (s): 1.00485
CPU system time (s): 0.078987
CPU usage (%): 88.3617
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	-7707