Trace number 300940

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 NameAnswerCPU timeWall clock time
ranov 2007-02-08SAT 210.017 210.186

General information on the benchmark

Namerandom/LargeSize/5SAT/v600/
unif-k5-r20-v600-c12000-S793374232-15.cnf
MD5SUM6e9f9b40f58898d74ef75a0a472d48ed
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark7.8948
Satisfiable
(Un)Satisfiability was proved
Number of variables600
Number of clauses12000
Sum of the clauses size60000
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 512000
Number of clauses of size over 50

Solver Data (download as text)

0.91/0.92	c +------------------------------+
0.91/0.92	c | R+AdaptNovelty+, version 1.5 |
0.91/0.92	c +------------------------------+
0.91/0.92	c ranov -h for help
0.91/0.92	c 
0.91/0.92	c Problem instance: numAtoms = 600, numClauses = 12000, numLiterals = 60000
0.91/0.92	c General parameters: seed=621080861, cutoff=100000, targetCost = 0, print solution: yes
0.91/0.92	c R+AdaptNovelty+ parameters: noise = 0, walkprob = 1
0.91/0.92	c tries = 1
0.91/0.92	c 
209.96/210.17	s SATISFIABLE
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209.96/210.17	v 564
209.96/210.17	v -565
209.96/210.17	v -566
209.96/210.17	v -567
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209.96/210.17	v 569
209.96/210.17	v -570
209.96/210.17	v -571
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209.96/210.17	v -573
209.96/210.17	v 574
209.96/210.17	v -575
209.96/210.17	v -576
209.96/210.17	v 577
209.96/210.17	v -578
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209.96/210.17	v -580
209.96/210.17	v 581
209.96/210.17	v -582
209.96/210.17	v 583
209.96/210.17	v -584
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209.96/210.17	v -590
209.96/210.17	v 591
209.96/210.17	v -592
209.96/210.17	v 593
209.96/210.17	v 594
209.96/210.17	v -595
209.96/210.17	v -596
209.96/210.17	v 597
209.96/210.17	v -598
209.96/210.17	v -599
209.96/210.17	v -600
209.96/210.17	v 0
209.96/210.17	c Done in 209.100000 seconds

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node19/watcher-300940-1171944044 -o ROOT/results/node19/solver-300940-1171944044 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/300940-1171944044/ranov /tmp/evaluation/300940-1171944044/instance-300940-1171944044.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 7220
/proc/meminfo: memFree=1376368/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=319884 CPUtime=0
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 879 0 0 0 0 0 0 0 18 0 1 0 214358472 327561216 864 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134528292 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 79971 870 30 98 0 79870 0

[startup+0.106766 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 7220
/proc/meminfo: memFree=1376368/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=320732 CPUtime=0.09
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 10099 0 0 0 5 4 0 0 18 0 1 0 214358472 328429568 10083 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134529696 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 80183 10083 39 98 0 80082 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 320732

[startup+0.51481 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 7220
/proc/meminfo: memFree=1376368/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=321012 CPUtime=0.5
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 10165 0 0 0 46 4 0 0 21 0 1 0 214358472 328716288 10149 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134523909 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 80253 10149 39 98 0 80152 0
Current children cumulated CPU time (s) 0.5
Current children cumulated vsize (KiB) 321012

[startup+1.3349 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 7221
/proc/meminfo: memFree=1326632/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=1.32
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 127 5 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513698 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 329232

[startup+2.97108 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 7221
/proc/meminfo: memFree=1326504/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=2.96
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 291 5 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513751 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 329232

[startup+6.24843 s]
/proc/loadavg: 0.93 0.98 0.99 2/78 7221
/proc/meminfo: memFree=1326504/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=6.23
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 618 5 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513295 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 6.23
Current children cumulated vsize (KiB) 329232

[startup+12.7041 s]
/proc/loadavg: 0.94 0.98 0.99 2/78 7221
/proc/meminfo: memFree=1326440/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=12.68
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 1263 5 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134514879 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 12.68
Current children cumulated vsize (KiB) 329232

[startup+25.5165 s]
/proc/loadavg: 0.95 0.98 0.99 3/84 7287
/proc/meminfo: memFree=1325032/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=25.46
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 2541 5 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513474 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 25.46
Current children cumulated vsize (KiB) 329232

[startup+51.1363 s]
/proc/loadavg: 1.15 1.03 1.01 2/84 7329
/proc/meminfo: memFree=1325112/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=51.04
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 5099 5 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513295 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 51.04
Current children cumulated vsize (KiB) 329232

[startup+102.375 s]
/proc/loadavg: 1.06 1.02 1.00 2/84 7395
/proc/meminfo: memFree=1325048/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=102.24
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 10218 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513762 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 102.24
Current children cumulated vsize (KiB) 329232

[startup+162.407 s]
/proc/loadavg: 1.02 1.02 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=162.24
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 16218 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513852 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 162.24
Current children cumulated vsize (KiB) 329232

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

[startup+183.605 s]
/proc/loadavg: 1.01 1.02 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=183.43
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 18337 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513774 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 183.43
Current children cumulated vsize (KiB) 329232

[startup+196.719 s]
/proc/loadavg: 1.01 1.02 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=196.54
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 19648 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513295 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 196.54
Current children cumulated vsize (KiB) 329232

[startup+203.276 s]
/proc/loadavg: 1.01 1.01 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=203.1
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 20304 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513433 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 203.1
Current children cumulated vsize (KiB) 329232

[startup+206.555 s]
/proc/loadavg: 1.01 1.01 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=206.38
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 20632 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513474 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 206.38
Current children cumulated vsize (KiB) 329232

[startup+208.191 s]
/proc/loadavg: 1.01 1.01 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=208.01
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 20795 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513762 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 208.01
Current children cumulated vsize (KiB) 329232

[startup+209.011 s]
/proc/loadavg: 1.01 1.01 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=208.83
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 20877 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513859 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 208.83
Current children cumulated vsize (KiB) 329232

[startup+209.832 s]
/proc/loadavg: 1.01 1.01 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=209.65
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 20959 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513295 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 209.65
Current children cumulated vsize (KiB) 329232

[startup+210.036 s]
/proc/loadavg: 1.01 1.01 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=209.86
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 20980 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513418 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 209.86
Current children cumulated vsize (KiB) 329232

[startup+210.138 s]
/proc/loadavg: 1.01 1.01 1.00 2/78 7419
/proc/meminfo: memFree=1326312/2055920 swapFree=4192812/4192956
[pid=7220] ppid=7218 vsize=329232 CPUtime=209.96
/proc/7220/stat : 7220 (ranov) R 7218 7220 7160 0 -1 4194304 12417 0 0 0 20990 6 0 0 25 0 1 0 214358472 337133568 12401 18446744073709551615 134512640 134914624 4294956624 18446744073709551615 134513801 0 0 4096 0 0 0 0 17 1 0 0
/proc/7220/statm: 82308 12401 42 98 0 82207 0
Current children cumulated CPU time (s) 209.96
Current children cumulated vsize (KiB) 329232

Child status: 10
Real time (s): 210.186
CPU time (s): 210.017
CPU user time (s): 209.943
CPU system time (s): 0.073988
CPU usage (%): 99.9196
Max. virtual memory (cumulated for all children) (KiB): 329232

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 209.943
system time used= 0.073988
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 12428
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= 6
involuntary context switches= 701

runsolver used 0.226965 second user time and 0.516921 second system time

The end

Launcher Data (download as text)

Begin job on node19 on Tue Feb 20 04:00:45 UTC 2007

IDJOB= 300940
IDBENCH= 20047
IDSOLVER= 105
FILE ID= node19/300940-1171944044

PBS_JOBID= 3848979

Free space on /tmp= 66545 MiB

SOLVER NAME= ranov 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/LargeSize/5SAT/v600/unif-k5-r20-v600-c12000-S793374232-15.cnf
COMMAND LINE= /tmp/evaluation/300940-1171944044/ranov /tmp/evaluation/300940-1171944044/instance-300940-1171944044.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node19/watcher-300940-1171944044 -o ROOT/results/node19/solver-300940-1171944044 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/300940-1171944044/ranov /tmp/evaluation/300940-1171944044/instance-300940-1171944044.cnf            

META MD5SUM SOLVER= f62d3053d967228316972e47f5f50e74
MD5SUM BENCH=  6e9f9b40f58898d74ef75a0a472d48ed

RANDOM SEED= 491341819

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node19.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.214
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	: 5931.00
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		: 3000.214
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:       1376840 kB
Buffers:         57504 kB
Cached:         503836 kB
SwapCached:          0 kB
Active:         290880 kB
Inactive:       313776 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1376840 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1396 kB
Writeback:           0 kB
Mapped:          62244 kB
Slab:            60024 kB
Committed_AS:   879188 kB
PageTables:       1756 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66545 MiB

End job on node19 on Tue Feb 20 04:04:15 UTC 2007