Trace number 84915

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) 18.6532 18.664

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/plato.asu.edu/
pub/milp/normalized-reduced-mps-v2-20-10-bienst2.opb
MD5SUMab5e35dff8e81ea7a1176a4145ab1bff
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmark
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of variables13736
Total number of constraints597
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)5
Number of constraints which are nor clauses,nor cardinality constraints592
Minimum length of a constraint7
Maximum length of a constraint390
Number of terms in the objective function 30
Biggest coefficient in the objective function 262145
Number of bits for the biggest coefficient in the objective function 19
Sum of the numbers in the objective function 524317
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 262145
Number of bits of the biggest number in a constraint 19
Biggest sum of numbers in a constraint 524564
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
18.66	c starting to Solve
18.66	Assertion failed: x >= lb; file glpmip2.c; line 230

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-84915-1154162388 -o ROOT/results/node22/solver-84915-1154162388 -C 1800 -M 1800 -S 64 ROOT/solvers/PB/PB06final/user8/glpPBv3 ROOT/tmp/node22/84915-1154162388/instance-84915-1154162388.opb 

Current StackSize limit: 67108864 bytes

/proc/loadavg: 0.89 0.92 0.90 2/64 20334
/proc/meminfo: memFree=1260008/2055920 swapFree=4173604/4192956
[pid=20334] ppid=20332 vsize=2424 CPUtime=0
/proc/20334/stat : 20334 (glpPBv3) R 20332 20334 20285 0 -1 0 137 0 0 0 0 0 0 0 19 0 1 0 163099641 2482176 119 18446744073709551615 134512640 134678228 4294956672 18446744073709551615 4681816 0 0 4096 0 0 0 0 17 1 0 0
/proc/20334/statm: 606 123 108 40 0 11 0

[startup+10.0018 s]
/proc/loadavg: 0.90 0.92 0.90 2/64 20334
/proc/meminfo: memFree=1249464/2055920 swapFree=4173604/4192956
[pid=20334] ppid=20332 vsize=13444 CPUtime=9.99
/proc/20334/stat : 20334 (glpPBv3) R 20332 20334 20285 0 -1 0 10316 0 0 0 994 5 0 0 25 0 1 0 163099641 13766656 2955 18446744073709551615 134512640 134678228 4294956672 18446744073709551615 134580756 0 0 4096 0 0 0 0 17 1 0 0
/proc/20334/statm: 3361 2955 227 40 0 2778 0
Current children cumulated CPU time (s) 9.99
Current children cumulated vsize (Kb) 13444

Child status: 1
Real time (s): 18.664
CPU time (s): 18.6532
CPU user time (s): 18.5522
CPU system time (s): 0.100984
CPU usage (%): 99.942
Max. virtual memory (cumulated for all children) (Kb): 13444
The end

Launcher Data (download as text)

Begin job on node22 on Sat Jul 29 08:39:48 UTC 2006


FILE ID= 84915-1154162388

PBS_JOBID= 892689

BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/reduced/mps-v2-20-10/plato.asu.edu/pub/milp/normalized-reduced-mps-v2-20-10-bienst2.opb
COMMAND LINE= ROOT/solvers/PB/PB06final/user8/glpPBv3 ROOT/tmp/node22/84915-1154162388/instance-84915-1154162388.opb
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node22/watcher-84915-1154162388 -o ROOT/results/node22/solver-84915-1154162388 -C 1800 -M 1800 -S 64  ROOT/solvers/PB/PB06final/user8/glpPBv3 ROOT/tmp/node22/84915-1154162388/instance-84915-1154162388.opb

MD5SUM SOLVER= 29ce95346658d7502ba983059bfb8cff
MD5SUM BENCH=  ab5e35dff8e81ea7a1176a4145ab1bff

RANDOM SEED= 303906123

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:       1260216 kB
Buffers:         39288 kB
Cached:         663944 kB
SwapCached:      13080 kB
Active:          88144 kB
Inactive:       633100 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1260216 kB
SwapTotal:     4192956 kB
SwapFree:      4173604 kB
Dirty:             180 kB
Writeback:           0 kB
Mapped:          14548 kB
Slab:            60552 kB
Committed_AS:   723860 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 08:40:07 UTC 2006