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

Namesubmitted/manquinho/primes-dimacs-cnf/normalized-ii8a1.opb
MD5SUMb3cc2686c19f6e4ddbbeb52b8905fbf9
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 54
Optimality of the best value was proved YES
Number of terms in the objective function 132
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 132
Number of bits of the sum of numbers in the objective function 8
Biggest number in a constraint 1
Number of bits of the biggest number in a constraint 1
Biggest sum of numbers in a constraint 132
Number of bits of the biggest sum of numbers8
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.809876
Number of variables132
Total number of constraints252
Number of constraints which are clauses252
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 constraint8

Trace number 1552

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-18 16:04:02 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=3671 boxname=wulflinc17 idbench=155 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  b3cc2686c19f6e4ddbbeb52b8905fbf9  /oldhome/oroussel/tmp/wulflinc17/normalized-ii8a1.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc17/normalized-ii8a1.opb
IDLAUNCH: 3671
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        942984 kB
Buffers:         19624 kB
Cached:          45412 kB
SwapCached:        516 kB
Active:          21556 kB
Inactive:        45936 kB
HighTotal:      131008 kB
HighFree:        81592 kB
LowTotal:       903652 kB
LowFree:        861392 kB
SwapTotal:     2097892 kB
SwapFree:      2096672 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5680 kB
Slab:            18444 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 16:04:07 (client local time) WITH STATUS 30 IN 4.68629 SECONDS
stats: 3671 0 4.68629 30

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc17/normalized-ii8a1.opb ......
c The optimum solution is:54
s OPTIMUM FOUND
v x1 -x10 x100 -x101 x102 x103 -x104 -x105 x106 -x107 x108 x109 x11 -x110 -x111 x112 -x113 x114 -x115 x116 x117 -x118 -x119 -x12 x120 x121 -x122 -x123 x124 -x125 x126 -x127 x128 -x129 -x13 x130 x131 -x132 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=4.67529

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/25026/stat): 25026 (PBS4) R 25025 25026 19316 0 -1 0 18 0 0 0 0 0 0 0 21 0 1 0 1842574648 978944 2 4294967295 134512640 135450776 3221224576 3221224576 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/25026/statm): 239 2 232 232 0 7 0
[pid=25026] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-ii8a1.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-ii8a1.opb
One traced child (pid=25026) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 4.94561
CPU time (s): 4.68629
CPU user time (s): 4.54831
CPU system time (s): 0.137979
CPU usage (%): 94.7565
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	54