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-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-scorpion.opb
MD5SUMd78b2a3709ef5514ef5552f6badb37ec
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 8460
Biggest coefficient in the objective function 10788957847552
Number of bits for the biggest coefficient in the objective function 44
Sum of the numbers in the objective function 603693086370759
Number of bits of the sum of numbers in the objective function 50
Biggest number in a constraint 33554432000000
Number of bits of the biggest number in a constraint 45
Biggest sum of numbers in a constraint 603693086370759
Number of bits of the biggest sum of numbers50
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables10740
Total number of constraints388
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 constraints388
Minimum length of a constraint30
Maximum length of a constraint600

Trace number 9910

Launcher Data

LAUNCH ON wulflinc3 THE 2005-09-23 16:09:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8665 boxname=wulflinc3 idbench=461 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  d78b2a3709ef5514ef5552f6badb37ec  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-scorpion.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-scorpion.opb
IDLAUNCH: 8665
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.228
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		: 451.228
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:        935616 kB
Buffers:         12808 kB
Cached:          68928 kB
SwapCached:          0 kB
Active:          44952 kB
Inactive:        39692 kB
HighTotal:      131008 kB
HighFree:        57764 kB
LowTotal:       903652 kB
LowFree:        877852 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8828 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:11:27 (client local time) WITH STATUS 0 IN 89.9043 SECONDS
stats: 8665 7 89.9043 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

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/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21534993 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 373 2 364 364 0 9 0
[pid=8787] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-scorpion.opb

[startup+10.0027 s]
Raw data (loadavg): 0.91 0.94 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 27262 0 0 0 931 66 0 0 25 0 1 0 21534993 85131264 16100 4294967295 134512640 135987407 3221224560 3221171164 134865862 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 20784 16100 364 364 0 20420 0
[pid=8787] vsize: 83136
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 83136

[startup+20.0035 s]
Raw data (loadavg): 0.92 0.94 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 54882 0 0 0 1868 128 0 0 25 0 1 0 21534993 162439168 32480 4294967295 134512640 135987407 3221224560 3221172288 134537592 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 39658 32480 364 364 0 39294 0
[pid=8787] vsize: 158632
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 158632

[startup+30.0044 s]
Raw data (loadavg): 0.93 0.94 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 94993 0 0 0 2777 216 0 0 25 0 1 0 21534993 312729600 50371 4294967295 134512640 135987407 3221224560 3221198288 134877628 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 76350 50371 364 364 0 75986 0
[pid=8787] vsize: 305400
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 305400

[startup+40.0052 s]
Raw data (loadavg): 0.94 0.94 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 110476 0 0 0 3739 254 0 0 25 0 1 0 21534993 317054976 65589 4294967295 134512640 135987407 3221224560 3221185152 134893003 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 77406 65589 364 364 0 77042 0
[pid=8787] vsize: 309624
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 309624

[startup+50.007 s]
Raw data (loadavg): 0.95 0.94 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 153047 0 0 0 4641 347 0 0 25 0 1 0 21534993 446078976 88517 4294967295 134512640 135987407 3221224560 3221178704 134559162 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 108906 88517 364 364 0 108542 0
[pid=8787] vsize: 435624
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (Kb) 435624

[startup+60.0079 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 189551 0 0 0 5556 433 0 0 25 0 1 0 21534993 583811072 100240 4294967295 134512640 135987407 3221224560 3221205528 134537543 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 142532 100240 364 364 0 142168 0
[pid=8787] vsize: 570128
Current children cumulated CPU time (s) 59.89
Current children cumulated vsize (Kb) 570128

[startup+70.0087 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 206286 0 0 0 6514 474 0 0 25 0 1 0 21534993 588812288 116690 4294967295 134512640 135987407 3221224560 3221209532 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 143753 116690 364 364 0 143389 0
[pid=8787] vsize: 575012
Current children cumulated CPU time (s) 69.88
Current children cumulated vsize (Kb) 575012

[startup+80.0095 s]
Raw data (loadavg): 0.97 0.95 0.91 2/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) R 8786 8787 4060 0 -1 0 222967 0 0 0 7472 516 0 0 25 0 1 0 21534993 593948672 133087 4294967295 134512640 135987407 3221224560 3221163500 134637035 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 145007 133087 364 364 0 144643 0
[pid=8787] vsize: 580028
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 580028



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+89.7304 s]
Raw data (loadavg): 0.97 0.95 0.91 1/55 8787
Raw data (/proc/8787/stat): 8787 (pb2sat) T 8786 8787 4060 0 -1 0 237794 0 0 0 8407 551 0 0 25 0 1 0 21534993 943824896 147687 4294967295 134512640 135987407 3221224560 3221179276 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8787/statm): 230426 147687 364 364 0 230062 0
[pid=8787] vsize: 921704
Current children cumulated CPU time (s) 89.58
Current children cumulated vsize (Kb) 921704

Sending SIGTERM to -8787
Sleeping 2 seconds

[startup+90.0094 s]
Raw data (loadavg): 0.97 0.95 0.91 1/56 8788
Raw data (/proc/8787/stat): 8787 (pb2sat) S 8786 8787 4060 0 -1 0 237795 0 0 0 8408 551 0 0 25 0 1 0 21534993 943824896 147688 4294967295 134512640 135987407 3221224560 3221177688 135549753 0 16384 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8787/statm): 230426 147688 364 364 0 230062 0
[pid=8787] vsize: 921704
Current children cumulated CPU time (s) 89.59
Current children cumulated vsize (Kb) 921704
Sending SIGKILL to -8787
One traced child (pid=8787) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 92.0401
CPU time (s): 89.9043
CPU user time (s): 84.0882
CPU system time (s): 5.81612
CPU usage (%): 97.6795
Max. virtual memory (cumulated for all children) (Kb): 921704

Verifier Data

ERROR: no interpretation found !