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:
-
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.
-
SOLVER DATA
This is the output of the solver (stdout and stderr).
-
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.
-
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
| Name | normalized-opb/submitted/sorensson/garden/normalized-g4x4.opb |
| MD5SUM | 86076c854d7a3787e909491096d2ae43 |
| Bench Category | optimization, small integers (OPTSMALLINT) |
| Has Objective Function | YES |
| Satisfiable | YES |
| (Un)Satisfiability was proved | YES |
| Best value of the objective function | 4 |
| Optimality of the best value was proved | NO |
| Number of terms in the objective function | 16 |
| 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 | 16 |
| Number of bits of the sum of numbers in the objective function | 5 |
| Biggest number in a constraint | 1 |
| Number of bits of the biggest number in a constraint | 1 |
| Biggest sum of numbers in a constraint | 16 |
| Number of bits of the biggest sum of numbers | 5 |
| Best result obtained on this benchmark | SAT |
| Best CPU time to get the best result obtained on this benchmark | 0.008998 |
| Number of variables | 16 |
| Total number of constraints | 16 |
| Number of constraints which are clauses | 16 |
| Number of constraints which are cardinality constraints (but not clauses) | 0 |
| Number of constraints which are nor clauses,nor cardinality constraints | 0 |
| Minimum length of a constraint | 3 |
| Maximum length of a constraint | 5 |
Trace number 33813
#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc22 THE 2005-05-27 16:57:21 (client local time)
PB2005-SCRIPT v4.0
MARKUPS: idlaunch=4922 boxname=wulflinc22 idbench=379 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322 /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH: 86076c854d7a3787e909491096d2ae43 /oldhome/oroussel/tmp/wulflinc22/normalized-g4x4.opb
REAL COMMAND: vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc22/normalized-g4x4.opb 0
IDLAUNCH: 4922
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 3
cpu MHz : 451.031
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 : 3
cpu MHz : 451.031
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: 717520 kB
Buffers: 34452 kB
Cached: 259876 kB
SwapCached: 384 kB
Active: 53488 kB
Inactive: 243084 kB
HighTotal: 131008 kB
HighFree: 252 kB
LowTotal: 903652 kB
LowFree: 717268 kB
SwapTotal: 2097892 kB
SwapFree: 2096800 kB
Dirty: 60 kB
Writeback: 0 kB
Mapped: 5536 kB
Slab: 14884 kB
Committed_AS: 63604 kB
PageTables: 316 kB
VmallocTotal: 114680 kB
VmallocUsed: 1368 kB
VmallocChunk: 113252 kB
JOB ENDED THE 2005-05-27 16:57:22 (client local time) WITH STATUS 30 IN 0.176972 SECONDS
stats: 4922 0 0.176972 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
seed: 0
Nr of vars set: 0 (#equs: 0)
Nr of vars set: 0 (#equs: 0)
#decisions: 7; #end-nodes: 0;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 17, #non-axs: 0
tight: meta-meta: start: 6, end: 9; meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14; meta: start: 30, end (keep): 50
result: model found (1)
Model found with constant: 9 (6:>=*);
#decisions: 50; #end-nodes: 45;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 45 / 291 (80)
#axs: 17, #non-axs: 44
tight: meta-meta: start: 6, end: 9; meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14; meta: start: 30, end (keep): 50
Model found with constant: 10 (5:>=*);
#decisions: 33; #end-nodes: 30;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 30 / 272 (80)
#axs: 17, #non-axs: 73
tight: meta-meta: start: 6, end: 9; meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14; meta: start: 30, end (keep): 50
Model found with constant: 11 (4:>=*);
#decisions: 13; #end-nodes: 14;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 14 / 188 (80)
#axs: 17, #non-axs: 81
tight: meta-meta: start: 6, end: 9; meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14; meta: start: 30, end (keep): 50
Model found with constant:
(pushed:) 11 (4:>=*)
With an increment of the last pushed constant, a proof of false was found.
result: proof of false found (0)
seed: 0
Nr of vars set: 16 (#equs: 0)
Time taken in milliseconds: 30
times:
0m0.016s 0m0.010s
0m0.031s 0m0.026s
v -x1 -x2 x3 -x4 x5 -x6 -x7 -x8 -x9 -x10 -x11 x12 -x13 x14 -x15 -x16
s OPTIMUM FOUND
#### 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
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.78 0.94 0.90 2/54 25443
Raw data (stat): 25443 (runsolver) R 25442 23310 23309 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 857775659 884736 94 4294967295 134512640 135332820 3221224464 3221219628 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+0.520042 s]
Raw data (loadavg): 0.78 0.94 0.90 1/53 25456
Raw data (stat): 25443 (runsolver) R 25442 23310 23309 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 857775659 884736 94 4294967295 134512640 135332820 3221224464 3221219628 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 0
Child status: 30
Real time (s): 0.519797
CPU time (s): 0.176972
CPU user time (s): 0.077988
CPU system time (s): 0.098984
CPU usage (%): 34.0464
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier: OK 4
#### END VERIFIER DATA ####