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/www.csit.fsu.edu/~burkardt/datasets/mps/normalized-mps-v2-13-7-testprob.opb
MD5SUM3911b50f214e8d499e3836f4f58df69b
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 9443456
Optimality of the best value was proved YES
Number of terms in the objective function 40
Biggest coefficient in the objective function 9437184
Number of bits for the biggest coefficient in the objective function 24
Sum of the numbers in the objective function 18877426
Number of bits of the sum of numbers in the objective function 25
Biggest number in a constraint 9437184
Number of bits of the biggest number in a constraint 24
Biggest sum of numbers in a constraint 18877426
Number of bits of the biggest sum of numbers25
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark0.007998
Number of variables40
Total number of constraints5
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints5
Minimum length of a constraint9
Maximum length of a constraint31

Trace number 5371

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-20 01:11:26 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1169 boxname=wulflinc18 idbench=1169 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  3911b50f214e8d499e3836f4f58df69b  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-testprob.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-testprob.opb
IDLAUNCH: 1169
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.177
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		: 451.177
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:        908564 kB
Buffers:         18820 kB
Cached:          74436 kB
SwapCached:        856 kB
Active:          23764 kB
Inactive:        72052 kB
HighTotal:      131008 kB
HighFree:        53648 kB
LowTotal:       903652 kB
LowFree:        854916 kB
SwapTotal:     2097892 kB
SwapFree:      2096528 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5732 kB
Slab:            24404 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 01:11:35 (client local time) WITH STATUS 30 IN 8.97063 SECONDS
stats: 1169 0 8.97063 30

Solver Data

c INFO: OSL Context initialized.
c Initial problem consists of 40 variables and 6 constraints.
c No problem reductions applied in OPT. instance.
c	preprocess terminated. Elapsed time: 0.038
c After prepocess the problem consists of 30 variables and 6 constraints.
c Initial Lower Bound: 9437184
c Restart #1 #Var: 30 #Dec: 385 LB: 9437184 @ 0.094
c Restart #2 #Var: 30 #Dec: 1201 LB: 9437184 @ 0.211
c Restart #3 #Var: 30 #Dec: 2414 LB: 9437184 @ 0.402
c NEW SOLUTION FOUND: 9445106 @ 0.487 @ #Dec. 2947
c NEW SOLUTION FOUND: 9445042 @ 0.488 @ #Dec. 2948
c NEW SOLUTION FOUND: 9445010 @ 0.489 @ #Dec. 2951
c NEW SOLUTION FOUND: 9444274 @ 0.49 @ #Dec. 2955
c NEW SOLUTION FOUND: 9444242 @ 0.491 @ #Dec. 2957
c NEW SOLUTION FOUND: 9444226 @ 0.496 @ #Dec. 2970
c NEW SOLUTION FOUND: 9443858 @ 0.5 @ #Dec. 2985
c NEW SOLUTION FOUND: 9443842 @ 0.505 @ #Dec. 2998
c NEW SOLUTION FOUND: 9443834 @ 0.519 @ #Dec. 3047
c NEW SOLUTION FOUND: 9443650 @ 0.535 @ #Dec. 3097
c NEW SOLUTION FOUND: 9443642 @ 0.559 @ #Dec. 3161
c NEW SOLUTION FOUND: 9443638 @ 0.618 @ #Dec. 3346
c NEW SOLUTION FOUND: 9443546 @ 0.685 @ #Dec. 3524
c NEW SOLUTION FOUND: 9443542 @ 0.823 @ #Dec. 3814
c NEW SOLUTION FOUND: 9443540 @ 1.076 @ #Dec. 4481
c Restart #4 #Var: 30 #Dec: 5482 LB: 9437184 @ 1.753
c NEW SOLUTION FOUND: 9443508 @ 1.79 @ #Dec. 5505
c NEW SOLUTION FOUND: 9443506 @ 1.856 @ #Dec. 5649
c NEW SOLUTION FOUND: 9443504 @ 1.86 @ #Dec. 5655
c NEW SOLUTION FOUND: 9443456 @ 2.292 @ #Dec. 6401
c Restart #5 #Var: 30 #Dec: 7646 LB: 9437184 @ 3.209
c Restart #6 #Var: 27 #Dec: 9188 LB: 9441792 @ 5.291
c Restart #7 #Var: 27 #Dec: 10669 LB: 9441792 @ 7.544
s OPTIMUM FOUND
v -X1_bit_7 -X1_bit_6 -X1_bit_5 -X1_bit_4 -X1_bit_3 -X1_bit_2 -X1_bit_1 -X1_bit0 -X1_bit1 X1_bit2 -X2_bit_7 -X2_bit_6 -X2_bit_5 -X2_bit_4 -X2_bit_3 -X2_bit_2 -X2_bit_1 -X2_bit0 -X2_bit1 -X3_bit_7 -X3_bit_6 -X3_bit_5 -X3_bit_4 -X3_bit_3 -X3_bit_2 -X3_bit_1 X3_bit0 -X3_bit1 X3_bit2 -X3_bit3 -X3_bit4 -X3_bit5 -X3_bit6 -X3_bit7 -X3_bit8 -X3_bit9 -X3_bit10 -X3_bit11 -X3_bit12 X3_bit13 
c Cost: 9443456
c Exit Code: 30
c Total time: 8.947 s

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/23156/stat): 23156 (bsolo) R 23155 23156 31027 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1854441910 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/23156/statm): 107 3 90 68 0 39 0
[pid=23156] vsize: 428
open syscall for file /etc/ld.so.preload
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open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-testprob.opb
One traced child (pid=23156) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 9.4045
CPU time (s): 8.97063
CPU user time (s): 8.67068
CPU system time (s): 0.299954
CPU usage (%): 95.3866
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	9443456