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-pipex.opb
MD5SUMb9c1029cc1d97a8d60e984f96f5d3267
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 788263
Optimality of the best value was proved NO
Number of terms in the objective function 48
Biggest coefficient in the objective function 107865
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 2514082
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 107865
Number of bits of the biggest number in a constraint 17
Biggest sum of numbers in a constraint 2514082
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02184
Number of variables48
Total number of constraints73
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)64
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint1
Maximum length of a constraint16

Trace number 28531 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-05-25 03:08:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=12195 boxname=wulflinc1 idbench=939 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  b9c1029cc1d97a8d60e984f96f5d3267  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-pipex.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-pipex.opb
IDLAUNCH: 12195
/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:        900044 kB
Buffers:          5592 kB
Cached:          99780 kB
SwapCached:       3972 kB
Active:          20096 kB
Inactive:        92212 kB
HighTotal:      131008 kB
HighFree:        45136 kB
LowTotal:       903652 kB
LowFree:        854908 kB
SwapTotal:     2097136 kB
SwapFree:      2092844 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6956 kB
Slab:            16488 kB
Committed_AS:    92716 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-25 03:09:27 (client local time) WITH STATUS 30 IN 58.7481 SECONDS
stats: 12195 0 58.7481 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 48 variables and 41 constraints.
c After prepocess the problem consists of 48 variables and 41 constraints.
c preprocess terminated 0.056 s
c Initial Lower Bound: 773839
c Lower Bound Elapsed time: 0.0079
c Use computed LB before first solution.
c NEW SOLUTION FOUND: 860146 @ 0.313
c NEW SOLUTION FOUND: 839325 @ 0.742
c NEW SOLUTION FOUND: 836685 @ 0.746
c NEW SOLUTION FOUND: 835008 @ 0.846
c NEW SOLUTION FOUND: 827319 @ 1.392
c NEW SOLUTION FOUND: 819381 @ 8.201
c NEW SOLUTION FOUND: 804391 @ 11.037
c NEW SOLUTION FOUND: 801381 @ 38.865
c NEW SOLUTION FOUND: 794954 @ 48.604
c NEW SOLUTION FOUND: 790836 @ 57.94
s OPTIMUM FOUND
v QUAN0101_bit0 QUAN0102_bit0 -QUAN0103_bit0 -QUAN0104_bit0 -QUAN0105_bit0 -QUAN0106_bit0 -QUAN0107_bit0 -QUAN0108_bit0 QUAN0109_bit0 -QUAN0110_bit0 -QUAN0111_bit0 -QUAN0112_bit0 -QUAN0113_bit0 QUAN0114_bit0 -QUAN0115_bit0 -QUAN0116_bit0 -QUAN0201_bit0 -QUAN0202_bit0 -QUAN0203_bit0 -QUAN0204_bit0 -QUAN0205_bit0 -QUAN0206_bit0 QUAN0207_bit0 QUAN0208_bit0 -QUAN0209_bit0 -QUAN0210_bit0 -QUAN0211_bit0 QUAN0212_bit0 QUAN0213_bit0 -QUAN0214_bit0 QUAN0215_bit0 QUAN0216_bit0 -QUAN0301_bit0 -QUAN0302_bit0 QUAN0303_bit0 QUAN0304_bit0 QUAN0305_bit0 QUAN0306_bit0 -QUAN0307_bit0 -QUAN0308_bit0 -QUAN0309_bit0 QUAN0310_bit0 QUAN0311_bit0 -QUAN0312_bit0 -QUAN0313_bit0 -QUAN0314_bit0 -QUAN0315_bit0 -QUAN0316_bit0 
c Exit Code: 30
c Total time: 58.732 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): 0.93 0.97 0.91 2/55 15240
Raw data (stat): 15240 (runsolver) R 15239 8378 8377 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 720442485 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+9.9998 s]
Raw data (loadavg): 0.94 0.97 0.91 2/55 15240
Raw data (stat): 15240 (bsolo_lpr) R 15239 8378 8377 0 -1 0 5170 0 0 0 968 30 0 0 25 0 1 0 720442485 8482816 1335 4294967295 134512640 134714508 3221224592 3221220864 1074805399 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2071 1335 1111 63 0 2008 0
vsize: 8284
[startup+19.9994 s]
Raw data (loadavg): 0.95 0.97 0.91 2/55 15240
Raw data (stat): 15240 (bsolo_lpr) R 15239 8378 8377 0 -1 0 10243 0 0 0 1947 50 0 0 25 0 1 0 720442485 9572352 1593 4294967295 134512640 134714508 3221224592 3221220864 1074961496 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2337 1593 1111 63 0 2274 0
vsize: 9348
[startup+30.0002 s]
Raw data (loadavg): 0.95 0.97 0.91 2/55 15240
Raw data (stat): 15240 (bsolo_lpr) R 15239 8378 8377 0 -1 0 30596 0 0 0 2893 104 0 0 25 0 1 0 720442485 10317824 1738 4294967295 134512640 134714508 3221224592 3221221484 1077387418 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2519 1739 1111 63 0 2456 0
vsize: 10076
[startup+40.0001 s]
Raw data (loadavg): 0.96 0.97 0.91 2/55 15240
Raw data (stat): 15240 (bsolo_lpr) R 15239 8378 8377 0 -1 0 47632 0 0 0 3849 148 0 0 25 0 1 0 720442485 10768384 1919 4294967295 134512640 134714508 3221224592 3221222320 1075828538 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 2629 1919 1111 63 0 2566 0
vsize: 10516
[startup+50.0008 s]
Raw data (loadavg): 0.97 0.97 0.91 2/55 15240
Raw data (stat): 15240 (bsolo_lpr) R 15239 8378 8377 0 -1 0 66233 0 0 0 4802 195 0 0 25 0 1 0 720442485 11223040 2057 4294967295 134512640 134714508 3221224592 3221223232 134649063 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2740 2057 1111 63 0 2677 0
vsize: 10960
[startup+58.7722 s]
Raw data (loadavg): 0.97 0.97 0.91 1/54 15240
Raw data (stat): 15240 (bsolo_lpr) R 15239 8378 8377 0 -1 0 66233 0 0 0 4802 195 0 0 25 0 1 0 720442485 11223040 2057 4294967295 134512640 134714508 3221224592 3221223232 134649063 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 2740 2057 1111 63 0 2677 0
vsize: 0

Child status: 30
Real time (s): 58.7719
CPU time (s): 58.7481
CPU user time (s): 56.3624
CPU system time (s): 2.38564
CPU usage (%): 99.9595
Max. virtual memory (Kb): 10960
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	790836
#### END VERIFIER DATA ####