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/submitted/manquinho/primes-dimacs-cnf/normalized-aim-50-3_4-yes1-2.opb
MD5SUM92da3ee1a58befab3a29e06da989eb2a
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 50
Optimality of the best value was proved NO
Number of terms in the objective function 100
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 100
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 100
Number of bits of the biggest sum of numbers7
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.018997
Number of variables100
Total number of constraints220
Number of constraints which are clauses220
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint2
Maximum length of a constraint3

Trace number 7655 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-04-17 15:57:38 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1041 boxname=wulflinc1 idbench=116 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  92da3ee1a58befab3a29e06da989eb2a  /oldhome/oroussel/tmp/wulflinc1/normalized-aim-50-3_4-yes1-2.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc1/normalized-aim-50-3_4-yes1-2.opb
IDLAUNCH: 1041
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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		: 451.053
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:        802104 kB
Buffers:         42600 kB
Cached:         164052 kB
SwapCached:          0 kB
Active:         122396 kB
Inactive:        87380 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        801852 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              36 kB
Writeback:           0 kB
Mapped:           7212 kB
Slab:            16896 kB
Committed_AS:    92820 kB
PageTables:        344 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-17 15:57:38 (client local time) WITH STATUS 30 IN 0.018997 SECONDS
stats: 1041 0 0.018997 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc1/normalized-aim-50-3_4-yes1-2.opb ......
c The optimum solution is:50
s OPTIMUM FOUND
v -x1 x10 -x100 -x11 x12 x13 -x14 x15 -x16 x17 -x18 -x19 x2 x20 x21 -x22 -x23 x24 -x25 x26 x27 -x28 x29 -x3 -x30 x31 -x32 -x33 x34 -x35 x36 x37 -x38 x39 x4 -x40 x41 -x42 -x43 x44 x45 -x46 -x47 x48 -x49 -x5 x50 x51 -x52 -x53 x54 -x55 x56 x57 -x58 x59 x6 -x60 -x61 x62 x63 -x64 -x65 x66 x67 -x68 x69 -x7 -x70 x71 -x72 -x73 x74 x75 -x76 x77 -x78 x79 x8 -x80 x81 -x82 -x83 x84 -x85 x86 x87 -x88 x89 -x9 -x90 x91 -x92 -x93 x94 x95 -x96 x97 -x98 x99 
c Done, CPU Time=0.006999
#### 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): 0.26 0.53 0.47 2/56 13205
Raw data (stat): 13205 (runsolver) R 13204 12452 12451 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 396695517 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.021225 s]
Raw data (loadavg): 0.26 0.53 0.47 1/55 13205
Raw data (stat): 13205 (runsolver) R 13204 12452 12451 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 396695517 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 30
Real time (s): 0.021002
CPU time (s): 0.018997
CPU user time (s): 0.012998
CPU system time (s): 0.005999
CPU usage (%): 90.4533
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	50
#### END VERIFIER DATA ####