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-jnh210.opb |
| MD5SUM | 536a635f83fc17dc00978c285b2ea8e6 |
| Bench Category | optimization, small integers (OPTSMALLINT) |
| Has Objective Function | YES |
| Satisfiable | YES |
| (Un)Satisfiability was proved | YES |
| Best value of the objective function | 88 |
| Optimality of the best value was proved | NO |
| Number of terms in the objective function | 200 |
| 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 | 200 |
| 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 | 200 |
| 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 | 0.694894 |
| Number of variables | 200 |
| Total number of constraints | 900 |
| Number of constraints which are clauses | 900 |
| 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 | 10 |
Trace number 33620
#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc27 THE 2005-05-27 15:16:52 (client local time)
PB2005-SCRIPT v4.0
MARKUPS: idlaunch=1664 boxname=wulflinc27 idbench=185 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322 /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH: 536a635f83fc17dc00978c285b2ea8e6 /oldhome/oroussel/tmp/wulflinc27/normalized-jnh210.opb
REAL COMMAND: vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc27/normalized-jnh210.opb 0
IDLAUNCH: 1664
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 3
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 : 888.83
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 3
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: 741880 kB
Buffers: 23764 kB
Cached: 247308 kB
SwapCached: 2016 kB
Active: 28024 kB
Inactive: 246480 kB
HighTotal: 131008 kB
HighFree: 252 kB
LowTotal: 903652 kB
LowFree: 741628 kB
SwapTotal: 2097892 kB
SwapFree: 2094976 kB
Dirty: 12 kB
Writeback: 0 kB
Mapped: 5104 kB
Slab: 12516 kB
Committed_AS: 63600 kB
PageTables: 316 kB
VmallocTotal: 114680 kB
VmallocUsed: 1368 kB
VmallocChunk: 113252 kB
JOB ENDED THE 2005-05-27 15:16:57 (client local time) WITH STATUS 30 IN 4.13137 SECONDS
stats: 1664 0 4.13137 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
seed: 0
Nr of vars set: 0 (#equs: 0)
Nr of vars set: 78 (#equs: 18)
#decisions: 6; #end-nodes: 0;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 919, #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: 102 (97:>=*);
#decisions: 13; #end-nodes: 5;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 5 / 114 (80)
#axs: 919, #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: 103 (96:>=*);
#decisions: 40; #end-nodes: 13;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 13 / 148 (80)
#axs: 919, #non-axs: 1
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: 107 (92:>=*);
#decisions: 18; #end-nodes: 1;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 1 / 80 (80)
#axs: 919, #non-axs: 1
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: 108 (91:>=*);
#decisions: 79; #end-nodes: 30;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 30 / 81 (80)
#axs: 919, #non-axs: 4
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: 109 (90:>=*);
#decisions: 22; #end-nodes: 2;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 2 / 80 (80)
#axs: 919, #non-axs: 4
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: 110 (89:>=*);
#decisions: 89; #end-nodes: 29;
#proof improvement attempts: 0; #restarts: 0
Current batch, end-nodes: 29 / 80 (80)
#axs: 919, #non-axs: 4
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: 111 (88:>=*);
#decisions: 9034; #end-nodes: 6191;
#proof improvement attempts: 0; #restarts: 11
Current batch, end-nodes: 2979 / 3461 (82)
#axs: 919, #non-axs: 59
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:) 111 (88:>=*)
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: 198 (#equs: 18)
Time taken in milliseconds: 3930
times:
0m0.017s 0m0.009s
0m3.833s 0m0.116s
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 x133 -x134 -x135 x136 -x137 x138 -x139 x140 x141 -x142 x143 -x144 -x145 x146 x147 -x148 x149 -x150 x151 -x152 x153 -x154 -x155 x156 -x157 x158 x159 -x160 x161 -x162 -x163 x164 x165 -x166 x167 -x168 -x169 x170 x171 -x172 -x173 x174 x175 -x176 x177 -x178 -x179 -x180 -x181 -x182 -x183 -x184 x185 -x186 -x187 x188 x189 -x190 x191 -x192 x193 -x194 -x195 x196 x197 -x198 x199 -x200
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): 0.70 0.92 0.89 2/54 11042
Raw data (stat): 11042 (runsolver) R 11041 3394 3393 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 857167951 884736 93 4294967295 134512640 135332820 3221224464 3221219520 134917777 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+4.48104 s]
Raw data (loadavg): 0.80 0.94 0.90 1/53 11055
Raw data (stat): 11042 (runsolver) R 11041 3394 3393 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 857167951 884736 93 4294967295 134512640 135332820 3221224464 3221219520 134917777 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): 4.48078
CPU time (s): 4.13137
CPU user time (s): 3.9314
CPU system time (s): 0.199969
CPU usage (%): 92.202
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier: OK 88
#### END VERIFIER DATA ####