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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos5.opb
MD5SUMe6bff154156b54af3a9a38f7579209b6
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 15872
Optimality of the best value was proved NO
Number of terms in the objective function 163
Biggest coefficient in the objective function 1024
Number of bits for the biggest coefficient in the objective function 11
Sum of the numbers in the objective function 74742
Number of bits of the sum of numbers in the objective function 17
Biggest number in a constraint 8192
Number of bits of the biggest number in a constraint 14
Biggest sum of numbers in a constraint 74742
Number of bits of the biggest sum of numbers17
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.13
Number of variables163
Total number of constraints126
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)56
Number of constraints which are nor clauses,nor cardinality constraints70
Minimum length of a constraint1
Maximum length of a constraint102

Trace number 5421

Launcher Data

LAUNCH ON wulflinc4 THE 2005-09-20 01:16:18 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1917 boxname=wulflinc4 idbench=745 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  e6bff154156b54af3a9a38f7579209b6  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-neos5.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-neos5.opb
IDLAUNCH: 1917
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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:        897004 kB
Buffers:         31204 kB
Cached:          80952 kB
SwapCached:        860 kB
Active:          31400 kB
Inactive:        83264 kB
HighTotal:      131008 kB
HighFree:        46760 kB
LowTotal:       903652 kB
LowFree:        850244 kB
SwapTotal:     2097136 kB
SwapFree:      2095644 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5520 kB
Slab:            17324 kB
Committed_AS:    72360 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 01:16:21 (client local time) WITH STATUS 10 IN 1.58876 SECONDS
stats: 1917 0 1.58876 10

Solver Data

c Decisions:	55837
c Implications:	189137
c RUNTIME:	1.00085s
v d1_bit0 d2_bit0 d3_bit0 d4_bit0 d5_bit0 d6_bit0 d7_bit0 d8_bit0 d9_bit0 d10_bit0 d11_bit0 d12_bit0 d13_bit0 d14_bit0 d15_bit0 d16_bit0 d17_bit0 d18_bit0 d19_bit0 d20_bit0 d21_bit0 d22_bit0 d23_bit0 -d24_bit0 -d25_bit0 -d26_bit0 -d27_bit0 -d28_bit0 -d29_bit0 -d30_bit0 -d31_bit0 -d32_bit0 -d33_bit0 -d34_bit0 -d35_bit0 -d36_bit0 -d37_bit0 -d38_bit0 -d39_bit0 -d40_bit0 -d41_bit0 -d42_bit0 -d43_bit0 -d44_bit0 -d45_bit0 -d46_bit0 -d47_bit0 -d48_bit0 -d49_bit0 -d50_bit0 -d51_bit0 -d52_bit0 -d53_bit0 d54_bit_10 d54_bit_9 d54_bit_8 d54_bit_7 d54_bit_6 d54_bit_5 d54_bit_4 -d54_bit_3 -d54_bit_2 -d54_bit_1 -d54_bit0 d55_bit_10 d55_bit_9 d55_bit_8 d55_bit_7 d55_bit_6 d55_bit_5 -d55_bit_4 -d55_bit_3 -d55_bit_2 -d55_bit_1 -d55_bit0 d56_bit_10 d56_bit_9 d56_bit_8 d56_bit_7 -d56_bit_6 -d56_bit_5 -d56_bit_4 -d56_bit_3 -d56_bit_2 -d56_bit_1 -d56_bit0 d57_bit_10 d57_bit_9 d57_bit_8 -d57_bit_7 -d57_bit_6 -d57_bit_5 -d57_bit_4 -d57_bit_3 -d57_bit_2 -d57_bit_1 -d57_bit0 d58_bit_10 d58_bit_9 -d58_bit_8 -d58_bit_7 -d58_bit_6 -d58_bit_5 -d58_bit_4 -d58_bit_3 -d58_bit_2 -d58_bit_1 -d58_bit0 -d59_bit_10 -d59_bit_9 -d59_bit_8 -d59_bit_7 -d59_bit_6 -d59_bit_5 -d59_bit_4 -d59_bit_3 -d59_bit_2 -d59_bit_1 -d59_bit0 -d60_bit_10 -d60_bit_9 -d60_bit_8 -d60_bit_7 -d60_bit_6 -d60_bit_5 -d60_bit_4 -d60_bit_3 -d60_bit_2 -d60_bit_1 -d60_bit0 -d61_bit_10 -d61_bit_9 -d61_bit_8 -d61_bit_7 -d61_bit_6 -d61_bit_5 -d61_bit_4 -d61_bit_3 -d61_bit_2 -d61_bit_1 -d61_bit0 -d62_bit_10 -d62_bit_9 -d62_bit_8 -d62_bit_7 -d62_bit_6 -d62_bit_5 -d62_bit_4 -d62_bit_3 -d62_bit_2 -d62_bit_1 -d62_bit0 -d63_bit_10 -d63_bit_9 -d63_bit_8 -d63_bit_7 -d63_bit_6 -d63_bit_5 -d63_bit_4 -d63_bit_3 -d63_bit_2 -d63_bit_1 -d63_bit0 
s SATISFIABLE

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/2602/stat): 2602 (galena) R 2601 2602 6847 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1796263246 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/2602/statm): 248 2 241 241 0 7 0
[pid=2602] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-neos5.opb
One traced child (pid=2602) exited with status: 10
All traced children have exited ! Game is over.

Child status: 10
Real time (s): 2.91785
CPU time (s): 1.58876
CPU user time (s): 1.00385
CPU system time (s): 0.584911
CPU usage (%): 54.4495
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

Verifier:	OK	23767