Trace number 85114

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
glpPB 0.2? (exit code) 0.383941 0.387062

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/
MIPLIB/miplib2003/normalized-reduced-mps-v2-20-10-pp08aCUTS.opb
MD5SUM4a4829ccfb158b9e23ea953e29870120
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkSAT
Best value of the objective obtained on this benchmark69
Best CPU time to get the best result obtained on this benchmark1782.73
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 69
Optimality of the best value was proved NO
Number of variables4600
Total number of constraints310
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 constraints310
Minimum length of a constraint17
Maximum length of a constraint147
Number of terms in the objective function 3424
Biggest coefficient in the objective function 3121
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 527152
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 262140
Number of bits of the biggest number in a constraint 18
Biggest sum of numbers in a constraint 527152
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

Solver Data (download as text)

0.00	c glpPB 0.2 (July 2006)
0.00	c An Application of GLPK 4.10 for PB Constraints
0.00	c Done @ University of Michigan, Ann Arbor, MI
0.00	c  by Hossein Sheini
0.38	c starting to Solve
0.38	Assertion failed: x <= ub; file glpmip2.c; line 239

Verifier Data (download as text)

ERROR: no interpretation found !

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

runsolver version 3.0.3 (c) roussel@cril.univ-artois.fr

Enforcing memory limit (will send SIGKILL): 1843200 Kb
Enforcing VSIZE limit: 1887436800 bytes
command line: runsolver --timestamp -w ROOT/results/node22/watcher-85114-1154165052 -o ROOT/results/node22/solver-85114-1154165052 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user8/glpPBv3 ROOT/tmp/node22/85114-1154165052/instance-85114-1154165052.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.99 0.97 0.91 2/64 20976
/proc/meminfo: memFree=1230464/2055920 swapFree=4173604/4192956
[pid=20976] ppid=20974 vsize=2376 CPUtime=0
/proc/20976/stat : 20976 (glpPBv3) R 20974 20976 20927 0 -1 0 158 0 0 0 0 0 0 0 18 0 1 0 163365979 2433024 129 18446744073709551615 134512640 134678228 4294956672 18446744073709551615 4159922184 0 0 4096 0 0 0 0 17 1 0 0
/proc/20976/statm: 594 142 120 40 0 11 0

Child status: 1
Real time (s): 0.387062
CPU time (s): 0.383941
CPU user time (s): 0.373943
CPU system time (s): 0.009998
CPU usage (%): 99.1937
Max. virtual memory (cumulated for all children) (Kb): 0
The end

Launcher Data (download as text)

Begin job on node22 on Sat Jul 29 09:24:12 UTC 2006


FILE ID= 85114-1154165052

PBS_JOBID= 892888

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/MIPLIB/miplib2003/normalized-reduced-mps-v2-20-10-pp08aCUTS.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user8/glpPBv3 ROOT/tmp/node22/85114-1154165052/instance-85114-1154165052.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node22/watcher-85114-1154165052 -o ROOT/results/node22/solver-85114-1154165052 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user8/glpPBv3 ROOT/tmp/node22/85114-1154165052/instance-85114-1154165052.opb

MD5SUM SOLVER= 29ce95346658d7502ba983059bfb8cff
MD5SUM BENCH=  4a4829ccfb158b9e23ea953e29870120

RANDOM SEED= 82931140

TIMEOUT= 1800 seconds


/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		: 3000.234
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	: 5914.62
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		: 3000.234
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	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1230608 kB
Buffers:         39512 kB
Cached:         693232 kB
SwapCached:      13080 kB
Active:          88192 kB
Inactive:       662536 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1230608 kB
SwapTotal:     4192956 kB
SwapFree:      4173604 kB
Dirty:             176 kB
Writeback:           0 kB
Mapped:          14548 kB
Slab:            60552 kB
Committed_AS:   724924 kB
PageTables:       1404 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB


End job on node22 on Sat Jul 29 09:24:12 UTC 2006