Trace number 2656872

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
bsolo 3.2 CardSAT 58.2751 58.3118

General information on the benchmark

Namenormalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/liu/
dbst/normalized-dbst_v30_e350_d15_mw10_1.opb.PB06.opb
MD5SUM285f81376739daaaae61d54cc606f233
Bench CategoryDEC-SMALLINT (no optimisation, small integers)
Best result obtained on this benchmarkSAT
Best value of the objective obtained on this benchmark0
Best CPU time to get the best result obtained on this benchmark1.55476
Has Objective FunctionNO
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function
Optimality of the best value was proved NO
Number of variables1600
Total number of constraints328901
Number of constraints which are clauses327070
Number of constraints which are cardinality constraints (but not clauses)61
Number of constraints which are nor clauses,nor cardinality constraints1770
Minimum length of a constraint2
Maximum length of a constraint700
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 268
Number of bits of the biggest number in a constraint 9
Biggest sum of numbers in a constraint 789
Number of bits of the biggest sum of numbers10
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data

0.00/0.00	c bsolo beta version 3.2 - 23/05/2010 : 1630 GMT
0.00/0.00	c Developed by Vasco Manquinho and José Santos IST/UTL - INESC-ID
0.00/0.00	c type "bsolo -h" for help
0.00/0.00	c Time Limit set via environment variable PBTIMEOUT to 1800
0.00/0.00	c Time Limit set to 1800
0.00/0.00	c Learning Strategy: Cardinality Constraint Learning
0.00/0.00	c Instance file HOME/instance-2656872-1276319051.opb
0.00/0.00	c File size is 11433353 bytes.
1.89/1.98	c Highest Coefficient sum: 789
1.89/1.98	c Parsing was ok!!
1.89/1.98	c Total parsing time: 1.982 s
2.09/2.10	c Var: 1600 Constr: 328962 327130/62/1770 Lit: 1068140 Watch. Lit: 708982
2.09/2.10	c Obj. Vars: 0 (0 % of total variables)
58.05/58.17	c Pre-processing Time: 58.14 s
58.05/58.18	c    Confl   Vars     Ctrs     Lits  LPC   W.Lits     Max Learnt Conf/s Time
58.05/58.18	c        0   1600   307962  1005140    3   678579  249583      0      0 58.14
58.05/58.18	c Switching off lower bounding mode.
58.16/58.30	c Backtracks by Clause: 0
58.16/58.30	c Backtracks by PB constraint: 0
58.16/58.30	v -x2 -x901 -x3 -x902 -x4 -x903 -x5 -x904 -x6 -x905 -x8 -x906 -x9 -x907 -x10 -x908 -x11 -x909 -x12 -x910 -x13 -x911 -x15 -x912 -x16 -x913 -x17 -x914 -x18 -x915 -x19 -x916 -x20 -x917 -x21 -x918 -x22 -x919 -x24 -x920 -x25 -x921 -x26 -x922 -x27 -x923 -x28 -x924 -x29 -x925 x30 -x926 -x1 x927 -x928 -x929 -x7 -x930 -x931 -x932 -x933 -x934 -x935 -x936 -x14 -x937 -x938 -x939 -x940 -x941 -x942 -x943 -x944 -x945 -x23 -x946 -x947 -x948 -x949 -x950 -x951 -x952 -x953 -x954 -x955 -x956 -x957 -x958 -x959 -x960 -x961 -x962 -x963 -x964 -x965 -x966 -x967 -x968 -x969 -x970 -x971 -x972 -x973 -x974 -x975 -x976 x977 -x978 -x979 -x980 -x981 -x982 -x983 -x984 -x985 -x986 -x987 -x988 -x989 -x990 -x991 -x992 -x993 -x994 -x995 -x996 -x997 -x998 x999 x1000 -x1001 -x1002 -x1003 -x1004 -x1005 -x1006 -x1007 -x1008 -x1009 -x1010 -x1011 -x1012 -x1013 -x1014 -x1015 -x1016 -x1017 -x1018 -x1019 -x1020 -x1021 -x1022 -x1023 -x1024 -x1025 -x1026 -x1027 -x1028 -x1029 -x1030 -x1031 -x1032 -x1033 -x1034 -x1035 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58.16/58.30	c  Rst    Confl    NCB      Dec     Ctrs     Lits Learnt Conf/s Time
58.16/58.30	c    0        0      0      669   307962  1005140      0      0 58.27
58.16/58.30	s SATISFIABLE
58.16/58.30	c Total time: 58.266 s

Verifier Data

OK	0

Watcher Data

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2656872-1276319051/watcher-2656872-1276319051 -o /tmp/evaluation-result-2656872-1276319051/solver-2656872-1276319051 -C 1800 -W 2000 -M 1800 bsolo_pb10 -t1800 -l2 HOME/instance-2656872-1276319051.opb 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.94 0.98 1.05 3/106 10369
/proc/meminfo: memFree=1401628/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=22096 CPUtime=0
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 345 0 0 0 0 0 0 0 17 0 1 0 7506593 22626304 263 1992294400 134512640 137138936 4294923920 18446744073709551615 136506715 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 5524 263 175 642 0 2088 0

[startup+0.059125 s]
/proc/loadavg: 0.94 0.98 1.05 3/106 10369
/proc/meminfo: memFree=1401628/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=23192 CPUtime=0.05
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 697 0 0 0 5 0 0 0 17 0 1 0 7506593 23748608 615 1992294400 134512640 137138936 4294923920 18446744073709551615 134602758 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 5798 616 250 642 0 2362 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 23192

[startup+0.101131 s]
/proc/loadavg: 0.94 0.98 1.05 3/106 10369
/proc/meminfo: memFree=1401628/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=24012 CPUtime=0.09
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 985 0 0 0 9 0 0 0 17 0 1 0 7506593 24588288 903 1992294400 134512640 137138936 4294923920 18446744073709551615 134516218 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 6003 903 313 642 0 2567 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 24012

[startup+0.301166 s]
/proc/loadavg: 0.94 0.98 1.05 3/106 10369
/proc/meminfo: memFree=1401628/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=28120 CPUtime=0.29
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 2295 0 0 0 29 0 0 0 17 0 1 0 7506593 28794880 2213 1992294400 134512640 137138936 4294923920 18446744073709551615 136462546 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 7030 2214 599 642 0 3594 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 28120

[startup+0.701234 s]
/proc/loadavg: 0.94 0.98 1.05 3/106 10369
/proc/meminfo: memFree=1401628/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=36184 CPUtime=0.69
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 4884 0 0 0 67 2 0 0 17 0 1 0 7506593 37052416 4802 1992294400 134512640 137138936 4294923920 18446744073709551615 136506715 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 9046 4802 1166 642 0 5610 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 36184

[startup+1.50037 s]
/proc/loadavg: 0.94 0.98 1.05 2/107 10370
/proc/meminfo: memFree=1381036/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=52176 CPUtime=1.49
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 9988 0 0 0 145 4 0 0 18 0 1 0 7506593 53428224 9906 1992294400 134512640 137138936 4294923920 18446744073709551615 136525328 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 13044 9907 2288 642 0 9608 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 52176

[startup+3.10065 s]
/proc/loadavg: 0.94 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1345696/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=3.09
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 301 8 0 0 21 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 134540085 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 83408

[startup+6.3002 s]
/proc/loadavg: 0.94 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1327964/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=6.29
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 618 11 0 0 25 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 136570369 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 83408

[startup+12.7013 s]
/proc/loadavg: 0.95 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=12.68
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 1254 14 0 0 25 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 134540051 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 12.68
Current children cumulated vsize (KiB) 83408

[startup+25.5015 s]
/proc/loadavg: 0.96 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=25.48
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 2526 22 0 0 25 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 134540203 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 83408

[startup+51.1019 s]
/proc/loadavg: 0.97 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=51.06
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 5067 39 0 0 25 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 136570369 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 51.06
Current children cumulated vsize (KiB) 83408

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

[startup+54.3014 s]
/proc/loadavg: 0.97 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=54.25
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 5384 41 0 0 25 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 134540164 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 54.25
Current children cumulated vsize (KiB) 83408

[startup+55.9017 s]
/proc/loadavg: 0.97 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=55.86
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 5544 42 0 0 25 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 134540164 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 55.86
Current children cumulated vsize (KiB) 83408

[startup+57.501 s]
/proc/loadavg: 0.97 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83408 CPUtime=57.45
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 5702 43 0 0 25 0 1 0 7506593 85409792 18413 1992294400 134512640 137138936 4294923920 18446744073709551615 134540747 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20852 18413 184 642 0 20208 0
Current children cumulated CPU time (s) 57.45
Current children cumulated vsize (KiB) 83408

[startup+57.9011 s]
/proc/loadavg: 0.97 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=83084 CPUtime=57.85
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202496 21287 0 0 0 5742 43 0 0 25 0 1 0 7506593 85078016 18332 1992294400 134512640 137138936 4294923920 18446744073709551615 136505044 0 0 4096 16384 0 0 0 17 1 0 0 0
/proc/10369/statm: 20771 18332 184 642 0 20127 0
Current children cumulated CPU time (s) 57.85
Current children cumulated vsize (KiB) 83084

[startup+58.3081 s]
/proc/loadavg: 0.97 0.98 1.05 2/107 10372
/proc/meminfo: memFree=1328088/2059040 swapFree=4192956/4192956
[pid=10369] ppid=10367 vsize=0 CPUtime=58.27
/proc/10369/stat : 10369 (bsolo_pb10) R 10367 10369 10317 0 -1 4202500 21292 0 0 0 5783 44 0 0 25 0 1 0 7506593 0 0 1992294400 0 0 0 0 0 0 0 4096 16384 18446744073709551615 0 0 17 1 0 0 0
/proc/10369/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 58.27
Current children cumulated vsize (KiB) 0

Child status: 0
Real time (s): 58.3118
CPU time (s): 58.2751
CPU user time (s): 57.8302
CPU system time (s): 0.444932
CPU usage (%): 99.9371
Max. virtual memory (cumulated for all children) (KiB): 83408

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 57.8302
system time used= 0.444932
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 21292
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= 2
involuntary context switches= 349

runsolver used 0.095985 second user time and 0.287956 second system time

The end

Launcher Data

Begin job on node014 at 2010-06-12 07:04:12
IDJOB=2656872
IDBENCH=1374
IDSOLVER=1162
FILE ID=node014/2656872-1276319051
PBS_JOBID= 11173153
Free space on /tmp= 62452 MiB

SOLVER NAME= bsolo 3.2 Card
BENCH NAME= PB06//final/normalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/liu/dbst/normalized-dbst_v30_e350_d15_mw10_1.opb.PB06.opb
COMMAND LINE= bsolo_pb10 -tTIMEOUT -l2 BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2656872-1276319051/watcher-2656872-1276319051 -o /tmp/evaluation-result-2656872-1276319051/solver-2656872-1276319051 -C 1800 -W 2000 -M 1800  bsolo_pb10 -t1800 -l2 HOME/instance-2656872-1276319051.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 285f81376739daaaae61d54cc606f233
RANDOM SEED=2585631

node014.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	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.258
cache size	: 2048 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 6000.51
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		: 3000.258
cache size	: 2048 KB
physical id	: 3
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 6
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 constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5599.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2059040 kB
MemFree:       1402156 kB
Buffers:         98484 kB
Cached:         414736 kB
SwapCached:          0 kB
Active:         197992 kB
Inactive:       374932 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2059040 kB
LowFree:       1402156 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:           15372 kB
Writeback:           0 kB
AnonPages:       59612 kB
Mapped:          15456 kB
Slab:            62256 kB
PageTables:       4084 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5222476 kB
Committed_AS:   181704 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    264948 kB
VmallocChunk: 34359471699 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 62448 MiB
End job on node014 at 2010-06-12 07:05:11