Trace number 41780

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
PBS 4.1LOPT95 0.023995 0.030117

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/submitted-PB05/
manquinho/primes-dimacs-cnf/normalized-jnh301.opb
MD5SUM21989a3a2eabf31d3de5b03788f598a8
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark95
Best CPU time to get the best result obtained on this benchmark0.023995
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 95
Optimality of the best value was proved YES
Number of variables200
Total number of constraints1000
Number of constraints which are clauses1000
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint2
Maximum length of a constraint14
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 numbers8
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 PBS v4 by Bashar Al-Rawi & Fadi Aloul
0.00	c Solving ROOT/tmp/node78/41780-1149414885/instance-41780-1149414885.opb ......
0.01	c done parsing opb.
0.01	o 100
0.02	o 99
0.02	o 98
0.02	o 97
0.02	o 96
0.02	o 95
0.02	o 95
0.02	s OPTIMUM FOUND
0.02	c Total Run Time					0.010998
0.02	v -x1 x10 x100 -x101 x102 -x103 x104 -x105 x106 -x107 x108 -x109 -x11 x110 x111 -x112 x113 -x114 -x115 -x116 x117 -x118 x119 x12
0.02	v -x120 -x121 x122 -x123 x124 -x125 x126 -x127 x128 -x129 -x13 x130 -x131 x132 -x133 x134 -x135 x136 -x137 x138 -x139 x14 -x140
0.02	v -x141 x142 -x143 x144 x145 -x146 x147 -x148 -x149 -x15 -x150 -x151 x152 x153 -x154 -x155 x156 x157 -x158 -x159 x16 -x160 -x161
0.02	v x162 -x163 x164 x165 -x166 -x167 x168 x169 -x17 -x170 x171 -x172 x173 -x174 -x175 x176 x177 -x178 -x179 x18 x180 x181 -x182
0.02	v x183 -x184 -x185 x186 x187 -x188 -x189 -x19 x190 x191 -x192 x193 -x194 -x195 x196 x197 -x198 -x199 x2 x20 x200 -x21 x22 x23 -x24
0.02	v -x25 x26 -x27 x28 -x29 x3 x30 -x31 x32 -x33 x34 x35 -x36 x37 -x38 x39 -x4 -x40 x41 -x42 x43 -x44 -x45 x46 x47 -x48 -x49 -x5 x50 x51
0.02	v -x52 x53 -x54 x55 -x56 x57 -x58 -x59 x6 -x60 -x61 x62 -x63 x64 x65 -x66 -x67 x68 -x69 x7 x70 -x71 x72 -x73 x74 -x75 x76 x77 -x78 -x79
0.02	v -x8 x80 x81 -x82 x83 -x84 x85 -x86 x87 -x88 x89 -x9 -x90 -x91 x92 -x93 x94 -x95 x96 x97 -x98 -x99

Verifier Data (download as text)

OK	95

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/node78/watcher-41780-1149414885 -o ROOT/results/node78/solver-41780-1149414885 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node78/41780-1149414885/instance-41780-1149414885.opb 836951123 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.81 0.93 0.95 2/67 29076
/proc/meminfo: memFree=1544304/2055892 swapFree=4085732/4096564
[pid=29076] ppid=29074 vsize=1368 CPUtime=0
/proc/29076/stat : 29076 (PBS4L) D 29074 29076 29030 0 -1 4194304 110 0 0 0 0 0 0 0 19 0 1 0 206517329 1400832 95 18446744073709551615 134512640 135466232 4294956672 18446744073709551615 135132864 0 2147483391 4096 0 18446744072099917094 0 0 17 1 0 0
/proc/29076/statm: 342 95 84 232 0 107 0

Child status: 0
Real time (s): 0.030117
CPU time (s): 0.023995
CPU user time (s): 0.021996
CPU system time (s): 0.001999
CPU usage (%): 79.6725
Max. virtual memory (cumulated for all children) (Kb): 0

Launcher Data (download as text)

Begin job on node78 on Sun Jun  4 09:54:45 UTC 2006


FILE ID= 41780-1149414885

PBS_JOBID= 315154

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/submitted-PB05/manquinho/primes-dimacs-cnf/normalized-jnh301.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node78/41780-1149414885/instance-41780-1149414885.opb 836951123
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node78/watcher-41780-1149414885 -o ROOT/results/node78/solver-41780-1149414885 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user11/PBS4L ROOT/tmp/node78/41780-1149414885/instance-41780-1149414885.opb 836951123

MD5SUM SOLVER= ab46593c31a6a47b9d9920387a00d332
MD5SUM BENCH=  21989a3a2eabf31d3de5b03788f598a8

RANDOM SEED= 836951123


/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		: 3000.225
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	: 6006.17
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		: 3000.225
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	: 5999.44
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055892 kB
MemFree:       1544576 kB
Buffers:         28016 kB
Cached:         420856 kB
SwapCached:       2512 kB
Active:          94000 kB
Inactive:       363568 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055892 kB
LowFree:       1544576 kB
SwapTotal:     4096564 kB
SwapFree:      4085732 kB
Dirty:             296 kB
Writeback:           0 kB
Mapped:          15196 kB
Slab:            40268 kB
Committed_AS:   416824 kB
PageTables:       1420 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node78 on Sun Jun  4 09:54:45 UTC 2006