Trace number 3096133

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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 NameAnswerCPU timeWall clock time
MultiFlip 2011-02-11SAT 0.271958 0.274049

General information on the benchmark

Namerandom/medium/
unif-k5-r21.3-v100-c2130-S1880411078-058.SATISFIABLE.cnf
MD5SUM4731d8739f39a82190bbff45268a7d21
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.043992
Satisfiable
(Un)Satisfiability was proved
Number of variables100
Number of clauses2130
Sum of the clauses size10650
Maximum clause length5
Minimum clause length5
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 52130
Number of clauses of size over 50

Solver Data 

0.19/0.27	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.19/0.27	c input CNF file=HOME/instance-3096133-1301753600.cnf 
0.19/0.27	c var#=100 clause#=2130 
0.19/0.27	c clause#=2130 var#=100 ratio=21 
0.19/0.27	c Unsat#=         3 flip#=       386 
0.19/0.27	c Unsat#=         2 flip#=       771 
0.19/0.27	c Unsat#=         1 flip#=      7973 
0.19/0.27	c Unsat#=         0 flip#=    111784 
0.19/0.27	c try 1-th flip# 111784
0.19/0.27	c A solution is found
0.19/0.27	c verified 
0.19/0.27	s SATISFIABLE
0.19/0.27	v 1 -2 -3 -4 -5 6 -7 8 9 10 -11 12 13 -14 15 16 -17 -18 19 -20 -21 22 -23 24 25 -26 -27 -28 29 -30 -31 -32 33 -34 -35 -36 37 38 -39 40 -41 -42 43 44 -45 -46 47 -48 49 -50 -51 52 53 -54 55 56 -57 -58 -59 -60 -61 62 -63 -64 65 66 67 68 69 70 71 72 73 74 -75 -76 77 78 79 -80 81 82 83 84 -85 -86 -87 -88 89 -90 91 -92 -93 94 -95 96 -97 -98 -99 -100 
0.19/0.27	v 0
0.19/0.27	c Done (Running cputime is 0.248 seconds)

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 893)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3096133-1301753600/watcher-3096133-1301753600 -o /tmp/evaluation-result-3096133-1301753600/solver-3096133-1301753600 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096133-1301753600.cnf 

running on 2 cores: 4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16107
/proc/meminfo: memFree=21700084/32951132 swapFree=67111528/67111528
[pid=16107] ppid=16105 vsize=2980 CPUtime=0 cores=4,6
/proc/16107/stat : 16107 (MultiFlip) R 16105 16107 15364 0 -1 4202496 345 0 0 0 0 0 0 0 25 0 1 0 286959623 3051520 283 33554432000 134512640 134540672 4292171568 18446744073709551615 134538517 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/16107/statm: 745 283 217 7 0 102 0

[startup+0.0800119 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16107
/proc/meminfo: memFree=21700084/32951132 swapFree=67111528/67111528
[pid=16107] ppid=16105 vsize=2980 CPUtime=0.07 cores=4,6
/proc/16107/stat : 16107 (MultiFlip) R 16105 16107 15364 0 -1 4202496 364 0 0 0 7 0 0 0 25 0 1 0 286959623 3051520 302 33554432000 134512640 134540672 4292171568 18446744073709551615 134523504 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/16107/statm: 745 302 220 7 0 102 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 2980

[startup+0.100993 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16107
/proc/meminfo: memFree=21700084/32951132 swapFree=67111528/67111528
[pid=16107] ppid=16105 vsize=2980 CPUtime=0.09 cores=4,6
/proc/16107/stat : 16107 (MultiFlip) R 16105 16107 15364 0 -1 4202496 364 0 0 0 9 0 0 0 25 0 1 0 286959623 3051520 302 33554432000 134512640 134540672 4292171568 18446744073709551615 134523570 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/16107/statm: 745 302 220 7 0 102 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2980

Solver just ended. Dumping a history of the last processes samples

[startup+0.200975 s]
/proc/loadavg: 4.00 4.00 3.95 4/187 16107
/proc/meminfo: memFree=21700084/32951132 swapFree=67111528/67111528
[pid=16107] ppid=16105 vsize=2980 CPUtime=0.19 cores=4,6
/proc/16107/stat : 16107 (MultiFlip) R 16105 16107 15364 0 -1 4202496 364 0 0 0 19 0 0 0 25 0 1 0 286959623 3051520 302 33554432000 134512640 134540672 4292171568 18446744073709551615 134524011 0 0 4096 0 0 0 0 17 4 0 0 0
/proc/16107/statm: 745 302 220 7 0 102 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 2980

Child status: 10
Real time (s): 0.274049
CPU time (s): 0.271958
CPU user time (s): 0.271958
CPU system time (s): 0
CPU usage (%): 99.237
Max. virtual memory (cumulated for all children) (KiB): 2980

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.271958
system time used= 0
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 390
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 12
involuntary context switches= 1

runsolver used 0.000999 second user time and 0.006998 second system time

The end

Launcher Data 

Begin job on node131 at 2011-04-02 16:13:20
IDJOB=3096133
IDBENCH=82815
IDSOLVER=1523
FILE ID=node131/3096133-1301753600
RUNJOBID= node131-1301748568-15383
PBS_JOBID= 12841006
Free space on /tmp= 71660 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k5-r21.3-v100-c2130-S1880411078-058.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096133-1301753600/watcher-3096133-1301753600 -o /tmp/evaluation-result-3096133-1301753600/solver-3096133-1301753600 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096133-1301753600.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 4731d8739f39a82190bbff45268a7d21
RANDOM SEED=444420984

node131.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.66
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.77
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951132 kB
MemFree:      21700240 kB
Buffers:        351792 kB
Cached:       10568328 kB
SwapCached:          0 kB
Active:        6788300 kB
Inactive:      4199988 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      21700240 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:              40 kB
Writeback:           0 kB
AnonPages:       68140 kB
Mapped:          16376 kB
Slab:           199196 kB
PageTables:       4856 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS:   257744 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296000 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 71660 MiB
End job on node131 at 2011-04-02 16:13:20