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).
  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

Namenormalized-opb/mps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-p0033.opb
MD5SUM57736ac00f3096f4db9863fb985591a0
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3089
Optimality of the best value was proved NO
Number of terms in the objective function 33
Biggest coefficient in the objective function 517
Number of bits for the biggest coefficient in the objective function 10
Sum of the numbers in the objective function 7276
Number of bits of the sum of numbers in the objective function 13
Biggest number in a constraint 1656
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 7276
Number of bits of the biggest sum of numbers13
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.063989
Number of variables33
Total number of constraints48
Number of constraints which are clauses1
Number of constraints which are cardinality constraints (but not clauses)36
Number of constraints which are nor clauses,nor cardinality constraints11
Minimum length of a constraint1
Maximum length of a constraint19

Trace number 26598 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc11 THE 2005-05-24 16:41:16 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=12091 boxname=wulflinc11 idbench=931 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  57736ac00f3096f4db9863fb985591a0  /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-p0033.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-p0033.opb
IDLAUNCH: 12091
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.028
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		: 451.028
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:        682432 kB
Buffers:         38240 kB
Cached:         282024 kB
SwapCached:         84 kB
Active:          74056 kB
Inactive:       258800 kB
HighTotal:      131008 kB
HighFree:        32956 kB
LowTotal:       903652 kB
LowFree:        649476 kB
SwapTotal:     2097136 kB
SwapFree:      2097048 kB
Dirty:              56 kB
Writeback:           0 kB
Mapped:           6876 kB
Slab:            13720 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-24 16:41:20 (client local time) WITH STATUS 30 IN 3.51746 SECONDS
stats: 12091 0 3.51746 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 33 variables and 15 constraints.
c After prepocess the problem consists of 33 variables and 15 constraints.
c preprocess terminated 0.042 s
c Initial Lower Bound: 2074
c Lower Bound Elapsed time: 0.0046
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 3345 @ 0.101
c NEW SOLUTION FOUND: 3338 @ 0.332
c NEW SOLUTION FOUND: 3298 @ 0.34
c NEW SOLUTION FOUND: 3188 @ 0.349
c NEW SOLUTION FOUND: 3089 @ 0.361
s OPTIMUM FOUND
v C157_bit0 -C158_bit0 -C159_bit0 -C160_bit0 -C161_bit0 -C162_bit0 C163_bit0 C164_bit0 -C165_bit0 C166_bit0 -C167_bit0 -C168_bit0 -C169_bit0 C170_bit0 -C171_bit0 -C172_bit0 -C173_bit0 -C174_bit0 C175_bit0 C176_bit0 -C177_bit0 -C178_bit0 C179_bit0 -C180_bit0 C181_bit0 C182_bit0 C183_bit0 C184_bit0 C185_bit0 C186_bit0 -C187_bit0 -C188_bit0 -C189_bit0 
c Exit Code: 30
c Total time: 3.507 s
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Raw data (loadavg): 0.72 0.92 0.97 2/54 27140
Raw data (stat): 27140 (runsolver) R 27139 25830 25829 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 773531312 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+3.53763 s]
Raw data (loadavg): 0.74 0.92 0.97 1/53 27140
Raw data (stat): 27140 (runsolver) R 27139 25830 25829 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 773531312 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 30
Real time (s): 3.53704
CPU time (s): 3.51746
CPU user time (s): 3.38549
CPU system time (s): 0.131979
CPU usage (%): 99.4466
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	3089
#### END VERIFIER DATA ####