Trace number 40002

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 into four (or five) parts:
  1. 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 ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds, and are wall clock time (not CPU time).

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. 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.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. 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 X seconds (see the parameters in the trace). 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 X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    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.
  5. 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 provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerObjective functionCPU timeWall clock time
bsolo 2006/05OPT91 5.80012 5.82045

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/MIPLIB/
miplib/normalized-reduced-mps-v2-20-10-flugpl.opb
MD5SUM9c73ae3327669d874cd1c2ac8b389288
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark91
Best CPU time to get the best result obtained on this benchmark5.80012
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 91
Optimality of the best value was proved YES
Number of variables265
Total number of constraints29
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 constraints29
Minimum length of a constraint5
Maximum length of a constraint65
Number of terms in the objective function 265
Biggest coefficient in the objective function 245704
Number of bits for the biggest coefficient in the objective function 18
Sum of the numbers in the objective function 524478
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 262130
Number of bits of the biggest number in a constraint 18
Biggest sum of numbers in a constraint 524478
Number of bits of the biggest sum of numbers20
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data (download as text)

0.00	c Time Limit set via PBTIMEOUT to 1800
0.02	c INFO: OSL Context initialized.
0.02	c Initial problem consists of 265 variables and 35 constraints.
0.02	c Switching on LPR.
0.02	c No problem reductions applied in OPT. instance.
0.02	c	preprocess terminated. Elapsed time: 0.013
0.02	c After prepocess the problem consists of 196 variables and 35 constraints.
0.03	c Initial Lower Bound: 75
0.20	o 121
0.20	c NEW SOLUTION FOUND: 121 @ 0.187
0.20	o 115
0.20	c NEW SOLUTION FOUND: 115 @ 0.189
0.24	o 106
0.24	c NEW SOLUTION FOUND: 106 @ 0.23
0.24	o 100
0.24	c NEW SOLUTION FOUND: 100 @ 0.232
0.37	o 99
0.37	c NEW SOLUTION FOUND: 99 @ 0.364
0.44	o 98
0.44	c NEW SOLUTION FOUND: 98 @ 0.433
0.50	o 97
0.50	c NEW SOLUTION FOUND: 97 @ 0.489
1.15	c Restart #1 #Var: 196 LB: 75 @ 1.144
1.75	c Restart #2 #Var: 192 LB: 76 @ 1.735
2.69	c Restart #3 #Var: 192 LB: 76 @ 2.675
3.39	o 96
3.39	c NEW SOLUTION FOUND: 96 @ 3.379
3.49	o 95
3.49	c NEW SOLUTION FOUND: 95 @ 3.471
3.57	o 94
3.57	c NEW SOLUTION FOUND: 94 @ 3.551
3.77	o 93
3.77	c NEW SOLUTION FOUND: 93 @ 3.757
5.57	c Restart #4 #Var: 158 LB: 89 @ 5.552
5.69	o 92
5.69	c NEW SOLUTION FOUND: 92 @ 5.671
5.77	o 91
5.77	c NEW SOLUTION FOUND: 91 @ 5.753
5.81	s OPTIMUM FOUND
5.81	c Cost: 91
5.81	v -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
5.81	v -x59 -x60 -x1 x2 x3 -x4 -x5 -x86 -x87 -x88 -x89 -x90 -x91 -x92 -x93 -x94 -x95 -x96 -x97 -x98 -x99 -x100 -x101 -x102 -x103 -x104
5.81	v -x105 -x106 -x107 -x108 -x109 -x110 -x111 -x112 -x113 -x114 -x115 x61 x62 -x63 -x64 -x65 -x6 x7 x8 -x9 -x10 -x116 -x117 -x118
5.81	v -x119 -x120 -x121 -x122 -x123 -x124 -x125 -x126 -x127 -x128 -x129 -x130 -x131 -x132 x133 -x134 x135 -x136 -x137 -x138 -x139
5.81	v -x140 -x141 -x142 -x143 -x144 -x145 x66 x67 -x68 -x69 -x70 -x11 -x12 -x13 -x14 x15 -x146 -x147 -x148 -x149 -x150 -x151 -x152
5.81	v -x153 -x154 -x155 -x156 -x157 -x158 -x159 -x160 -x161 -x162 x163 -x164 x165 -x166 -x167 -x168 -x169 -x170 -x171 -x172 -x173
5.81	v -x174 -x175 x71 -x72 x73 x74 -x75 x16 x17 x18 -x19 -x20 -x176 -x177 -x178 -x179 -x180 -x181 -x182 -x183 -x184 -x185 -x186 -x187
5.81	v -x188 -x189 -x190 -x191 -x192 -x193 x194 -x195 -x196 -x197 -x198 -x199 -x200 -x201 -x202 -x203 -x204 -x205 x76 -x77 x78 x79
5.81	v -x80 -x21 -x22 x23 x24 -x25 -x206 -x207 -x208 -x209 -x210 -x211 -x212 -x213 -x214 -x215 -x216 -x217 -x218 -x219 -x220 -x221
5.81	v -x222 -x223 -x224 -x225 -x226 -x227 -x228 -x229 -x230 -x231 -x232 -x233 -x234 -x235 -x81 x82 -x83 -x84 x85 -x26 -x27 -x28 -x29
5.81	v -x30 -x236 -x237 -x238 -x239 -x240 -x241 -x242 -x243 -x244 -x245 -x246 -x247 -x248 -x249 -x250 -x251 -x252 -x253 x254 x255
5.81	v -x256 -x257 -x258 -x259 -x260 -x261 -x262 -x263 -x264 -x265
5.81	c Exit Code: 30
5.81	c Total time: 5.797 s

Verifier Data (download as text)

OK	91

Watcher Data (download as text)

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1830 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGKILL): 1843200 Kb
Enforcing VSIZE limit: 1887436800 bytes
runsolver version 3.0.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node81/watcher-40002-1149351158 -o ROOT/results/node81/solver-40002-1149351158 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node81/40002-1149351158/instance-40002-1149351158.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.92 0.97 0.97 2/68 2104
/proc/meminfo: memFree=1411608/2055892 swapFree=4085344/4096564
[pid=2104] ppid=2102 vsize=18544 CPUtime=0
/proc/2104/stat : 2104 (runsolver) R 2102 2104 2054 0 -1 4194368 15 0 0 0 0 0 0 0 19 0 1 0 200755251 18989056 278 18446744073709551615 4194304 4262084 548682069056 18446744073709551615 272559043607 0 2147483391 4096 24578 0 0 0 17 0 0 0
/proc/2104/statm: 4636 278 242 16 0 2626 0

Child status: 30
Real time (s): 5.82045
CPU time (s): 5.80012
CPU user time (s): 5.56415
CPU system time (s): 0.235964
CPU usage (%): 99.6508
Max. virtual memory (cumulated for all children) (Kb): 0

Launcher Data (download as text)

Begin job on node81 on Sat Jun  3 16:12:38 UTC 2006


FILE ID= 40002-1149351158

PBS_JOBID= 310975

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/MIPLIB/miplib/normalized-reduced-mps-v2-20-10-flugpl.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node81/40002-1149351158/instance-40002-1149351158.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node81/watcher-40002-1149351158 -o ROOT/results/node81/solver-40002-1149351158 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user10/bsolo ROOT/tmp/node81/40002-1149351158/instance-40002-1149351158.opb

MD5SUM SOLVER= 05cada221eb1efaaae980ebc7509e7e8
MD5SUM BENCH=  9c73ae3327669d874cd1c2ac8b389288

RANDOM SEED= 716218058


/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.248
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 6006.19
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.248
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5999.42
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055892 kB
MemFree:       1411816 kB
Buffers:         37904 kB
Cached:         528212 kB
SwapCached:       2636 kB
Active:          42440 kB
Inactive:       532504 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055892 kB
LowFree:       1411816 kB
SwapTotal:     4096564 kB
SwapFree:      4085344 kB
Dirty:             160 kB
Writeback:           0 kB
Mapped:          16520 kB
Slab:            55756 kB
Committed_AS:   312636 kB
PageTables:       1288 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node81 on Sat Jun  3 16:12:44 UTC 2006