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/manquinho/primes-dimacs-cnf/normalized-ii8a1.opb |
| MD5SUM | b3cc2686c19f6e4ddbbeb52b8905fbf9 |
| Bench Category | optimization, small integers (OPTSMALLINT) |
| Has Objective Function | YES |
| Satisfiable | YES |
| (Un)Satisfiability was proved | YES |
| Best value of the objective function | 54 |
| Optimality of the best value was proved | NO |
| Number of terms in the objective function | 132 |
| 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 | 132 |
| Number of bits of the sum of numbers in the objective function | 8 |
| Biggest number in a constraint | 1 |
| Number of bits of the biggest number in a constraint | 1 |
| Biggest sum of numbers in a constraint | 132 |
| Number of bits of the biggest sum of numbers | 8 |
| Best result obtained on this benchmark | SAT |
| Best CPU time to get the best result obtained on this benchmark | 0.763883 |
| Number of variables | 132 |
| Total number of constraints | 252 |
| Number of constraints which are clauses | 252 |
| 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 | 2 |
| Maximum length of a constraint | 8 |
Trace number 33598
#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-05-27 15:06:23 (client local time)
PB2005-SCRIPT v4.0
MARKUPS: idlaunch=1466 boxname=wulflinc6 idbench=163 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322 /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH: b3cc2686c19f6e4ddbbeb52b8905fbf9 /oldhome/oroussel/tmp/wulflinc6/normalized-ii8a1.opb
REAL COMMAND: vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc6/normalized-ii8a1.opb 0
IDLAUNCH: 1466
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 2
cpu MHz : 451.042
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 : 451.042
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: 721488 kB
Buffers: 27588 kB
Cached: 266168 kB
SwapCached: 480 kB
Active: 25172 kB
Inactive: 270948 kB
HighTotal: 131008 kB
HighFree: 252 kB
LowTotal: 903652 kB
LowFree: 721236 kB
SwapTotal: 2097136 kB
SwapFree: 2095980 kB
Dirty: 44 kB
Writeback: 0 kB
Mapped: 5696 kB
Slab: 11424 kB
Committed_AS: 63736 kB
PageTables: 320 kB
VmallocTotal: 114680 kB
VmallocUsed: 1364 kB
VmallocChunk: 113256 kB
JOB ENDED THE 2005-05-27 15:06:27 (client local time) WITH STATUS 30 IN 2.82257 SECONDS
stats: 1466 0 2.82257 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: 22; #end-nodes: 0;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 253, #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: 72 (59:>=*);
#decisions: 79; #end-nodes: 28;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 28 / 80 (80)
#axs: 253, #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
Model found with constant: 74 (57:>=*);
#decisions: 54; #end-nodes: 21;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 21 / 80 (80)
#axs: 253, #non-axs: 3
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: 75 (56:>=*);
#decisions: 479; #end-nodes: 270;
#proof improvement attempts: 0; #restarts: 2
Current batch, end-nodes: 71 / 80 (80)
#axs: 253, #non-axs: 5
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: 77 (54:>=*);
#decisions: 17534; #end-nodes: 13534;
#proof improvement attempts: 0; #restarts: 17
Current batch, end-nodes: 7121 / 7615 (84)
#axs: 253, #non-axs: 183
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:) 77 (54:>=*)
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: 132 (#equs: 0)
Time taken in milliseconds: 2640
times:
0m0.018s 0m0.007s
0m2.516s 0m0.144s
v -x1 -x2 x3 -x4 -x5 x6 x7 -x8 x9 -x10 -x11 x12 x13 -x14 -x15 -x16 x17 -x18 -x19 -x20 x21 -x22 -x23 -x24 -x25 -x26 x27 -x28 x29 -x30 -x31 -x32 -x33 -x34 x35 -x36 x37 -x38 -x39 -x40 -x41 -x42 x43 -x44 -x45 x46 x47 -x48 x49 -x50 -x51 -x52 -x53 -x54 x55 -x56 x57 -x58 -x59 x60 -x61 -x62 x63 -x64 x65 -x66 x67 -x68 x69 -x70 x71 -x72 x73 -x74 -x75 x76 -x77 x78 x79 -x80 x81 -x82 x83 -x84 x85 -x86 x87 -x88 x89 -x90 x91 -x92 x93 -x94 x95 -x96 -x97 x98 -x99 x100 x101 -x102 -x103 x104 x105 -x106 -x107 x108 -x109 x110 -x111 x112 x113 -x114 x115 -x116 -x117 x118 -x119 x120 -x121 x122 -x123 x124 x125 -x126 -x127 x128 -x129 x130 x131 -x132
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
Raw data (loadavg): 0.92 0.98 0.89 2/54 27592
Raw data (stat): 27592 (runsolver) R 27591 25568 25567 0 -1 64 6 0 0 0 0 0 0 0 19 0 1 0 798888506 884736 93 4294967295 134512640 135332820 3221224464 3221219360 134917321 0 0 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 93 205 205 0 11 0
vsize: 864
Current StackSize limit: 67108864 bytes
[startup+3.16577 s]
Raw data (loadavg): 0.93 0.98 0.89 1/53 27605
Raw data (stat): 27592 (runsolver) R 27591 25568 25567 0 -1 64 6 0 0 0 0 0 0 0 19 0 1 0 798888506 884736 93 4294967295 134512640 135332820 3221224464 3221219360 134917321 0 0 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 93 205 205 0 11 0
vsize: 0
Child status: 30
Real time (s): 3.16554
CPU time (s): 2.82257
CPU user time (s): 2.5996
CPU system time (s): 0.222966
CPU usage (%): 89.1656
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier: OK 54
#### END VERIFIER DATA ####