Trace number 1561663

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
CircUs 2009-03-23SAT 216.92 216.993

General information on the benchmark

NameCRAFTED/edgematching/
explicit/em_7_4_8_exp.cnf
MD5SUMe0caa78f33b332fe4d9add2bb1044111
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.032994
Satisfiable
(Un)Satisfiability was proved
Number of variables1617
Number of clauses25837
Sum of the clauses size69793
Maximum clause length25
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 214380
Number of clauses of size 38550
Number of clauses of size 4932
Number of clauses of size 51825
Number of clauses of size over 5150

Solver Data 

0.01/0.09	c CirCUs release 2.0 (compiled 25-Mar-09 at 4:46 PM)
0.01/0.09	c Eliminate time :       0.06 
216.81/216.96	c CNF read time  :       0.02 
216.81/216.96	c CNF solve time :     216.86 
216.81/216.96	c Memory usage :    22.5547 MB
216.81/216.96	c Restart : 1240
216.81/216.96	c Decisions : random(7309), heuristic(547894), history(0/0)
216.81/216.96	c Implications : 62396150
216.81/216.96	c Forced Restart : 0
216.81/216.96	c Polarity Change : 1683
216.81/216.96	c Learned clasues  : 70132 out of 409773
216.81/216.96	c Learned literals : 3690053 out of 26326740
216.81/216.96	c Number of first UIP : 77231 out of 409773
216.81/216.96	c Number of simplify : 2
216.81/216.96	c Number of continuous distill : 1791
216.81/216.96	c Average depth of OTS : 2
216.81/216.96	c Average depth of additional conflict : 43
216.81/216.96	c Saved conflict clasues : 339
216.81/216.96	c Saved conflict literals : 9015
216.81/216.96	c Additional conflict clauses : 19385
216.81/216.96	c Additional conflict literals : 1043161
216.81/216.96	c Additional conflict analysis : 50525
216.81/216.96	s SATISFIABLE
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216.81/216.96	v -1191 -1192  1193 -1194 -1195 -1196 -1197 -1198 -1199 -1200 
216.81/216.96	v -1201 -1202 -1203  1204 -1205  1206 -1207 -1208 -1209 -1210 
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216.81/216.96	v -1221 -1222 -1223 -1224  1225 -1226  1227 -1228 -1229 -1230 
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216.81/216.99	v  1611 -1612 -1613 -1614  1615 -1616 -1617 0

Verifier Data 

OK

Watcher Data 

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

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1561663-1238767945/watcher-1561663-1238767945 -o /tmp/evaluation-result-1561663-1238767945/solver-1561663-1238767945 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/CirCUs HOME/instance-1561663-1238767945.cnf -t 1200 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 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 1.08 1.21 3/65 5570
/proc/meminfo: memFree=1810608/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=1784 CPUtime=0
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 200 0 0 0 0 0 0 0 18 0 1 120000 1149456820 1826816 185 1992294400 134512640 135224549 4294956224 18446744073709551615 134726407 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 446 186 70 173 0 271 0

[startup+0.0137471 s]
/proc/loadavg: 0.92 1.08 1.21 3/65 5570
/proc/meminfo: memFree=1810608/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=2344 CPUtime=0.01
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 354 0 0 0 1 0 0 0 18 0 1 120000 1149456820 2400256 339 1992294400 134512640 135224549 4294956224 18446744073709551615 134726486 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 586 340 70 173 0 411 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 2344

[startup+0.101762 s]
/proc/loadavg: 0.92 1.08 1.21 3/65 5570
/proc/meminfo: memFree=1810608/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=3264 CPUtime=0.09
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 609 0 0 0 9 0 0 0 18 0 1 120000 1149456820 3342336 593 1992294400 134512640 135224549 4294956224 18446744073709551615 134726486 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 816 593 92 173 0 641 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3264

[startup+0.301797 s]
/proc/loadavg: 0.92 1.08 1.21 3/65 5570
/proc/meminfo: memFree=1810608/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=3688 CPUtime=0.29
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 741 0 0 0 29 0 0 0 19 0 1 120000 1149456820 3776512 725 1992294400 134512640 135224549 4294956224 18446744073709551615 134632717 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 922 725 92 173 0 747 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3688

[startup+0.701869 s]
/proc/loadavg: 0.92 1.08 1.21 3/65 5570
/proc/meminfo: memFree=1810608/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=4348 CPUtime=0.69
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 894 0 0 0 69 0 0 0 22 0 1 120000 1149456820 4452352 878 1992294400 134512640 135224549 4294956224 18446744073709551615 134595275 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 1087 878 92 173 0 912 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 4348

[startup+1.50201 s]
/proc/loadavg: 0.92 1.08 1.21 2/66 5571
/proc/meminfo: memFree=1807336/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=4612 CPUtime=1.49
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 957 0 0 0 149 0 0 0 25 0 1 120000 1149456820 4722688 941 1992294400 134512640 135224549 4294956224 18446744073709551615 134587947 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 1153 941 92 173 0 978 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 4612

[startup+3.10129 s]
/proc/loadavg: 0.92 1.08 1.21 2/66 5571
/proc/meminfo: memFree=1806632/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=5540 CPUtime=3.09
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 1183 0 0 0 309 0 0 0 25 0 1 120000 1149456820 5672960 1167 1992294400 134512640 135224549 4294956224 18446744073709551615 134587881 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 1385 1167 92 173 0 1210 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 5540

[startup+6.30186 s]
/proc/loadavg: 0.93 1.08 1.21 2/66 5571
/proc/meminfo: memFree=1805288/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=6464 CPUtime=6.29
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 1423 0 0 0 629 0 0 0 25 0 1 120000 1149456820 6619136 1407 1992294400 134512640 135224549 4294956224 18446744073709551615 134595298 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 1616 1407 92 173 0 1441 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 6464

[startup+12.702 s]
/proc/loadavg: 0.93 1.08 1.21 2/66 5571
/proc/meminfo: memFree=1803536/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=8048 CPUtime=12.68
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 1820 0 0 0 1268 0 0 0 25 0 1 120000 1149456820 8241152 1804 1992294400 134512640 135224549 4294956224 18446744073709551615 134595278 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 2012 1804 92 173 0 1837 0
Current children cumulated CPU time (s) 12.68
Current children cumulated vsize (KiB) 8048

[startup+25.5013 s]
/proc/loadavg: 0.95 1.08 1.20 2/66 5571
/proc/meminfo: memFree=1801808/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=10028 CPUtime=25.48
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 2304 0 0 0 2547 1 0 0 25 0 1 120000 1149456820 10268672 2288 1992294400 134512640 135224549 4294956224 18446744073709551615 134726486 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 2507 2288 92 173 0 2332 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 10028

[startup+51.1018 s]
/proc/loadavg: 0.96 1.07 1.20 2/66 5571
/proc/meminfo: memFree=1798992/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=12664 CPUtime=51.08
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 2980 0 0 0 5106 2 0 0 25 0 1 120000 1149456820 12967936 2931 1992294400 134512640 135224549 4294956224 18446744073709551615 134595278 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 3166 2931 92 173 0 2991 0
Current children cumulated CPU time (s) 51.08
Current children cumulated vsize (KiB) 12664

[startup+102.306 s]
/proc/loadavg: 0.98 1.06 1.18 2/66 5571
/proc/meminfo: memFree=1793936/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=17688 CPUtime=102.26
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 4228 0 0 0 10223 3 0 0 25 0 1 120000 1149456820 18112512 4179 1992294400 134512640 135224549 4294956224 18446744073709551615 134595278 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 4422 4179 92 173 0 4247 0
Current children cumulated CPU time (s) 102.26
Current children cumulated vsize (KiB) 17688

[startup+162.302 s]
/proc/loadavg: 0.99 1.04 1.17 2/66 5571
/proc/meminfo: memFree=1790992/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=20460 CPUtime=162.23
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 4951 0 0 0 16219 4 0 0 25 0 1 120000 1149456820 20951040 4902 1992294400 134512640 135224549 4294956224 18446744073709551615 134595278 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5115 4902 92 173 0 4940 0
Current children cumulated CPU time (s) 162.23
Current children cumulated vsize (KiB) 20460

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

[startup+179.102 s]
/proc/loadavg: 0.99 1.04 1.17 2/66 5571
/proc/meminfo: memFree=1790736/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=20988 CPUtime=179.03
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5073 0 0 0 17898 5 0 0 25 0 1 120000 1149456820 21491712 5024 1992294400 134512640 135224549 4294956224 18446744073709551615 134595295 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5247 5024 92 173 0 5072 0
Current children cumulated CPU time (s) 179.03
Current children cumulated vsize (KiB) 20988

[startup+191.902 s]
/proc/loadavg: 0.99 1.04 1.16 2/66 5571
/proc/meminfo: memFree=1789648/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=22036 CPUtime=191.82
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5350 0 0 0 19177 5 0 0 25 0 1 120000 1149456820 22564864 5236 1992294400 134512640 135224549 4294956224 18446744073709551615 134595278 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5509 5236 92 173 0 5334 0
Current children cumulated CPU time (s) 191.82
Current children cumulated vsize (KiB) 22036

[startup+204.701 s]
/proc/loadavg: 0.99 1.03 1.16 2/66 5571
/proc/meminfo: memFree=1789584/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=22036 CPUtime=204.62
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5350 0 0 0 20457 5 0 0 25 0 1 120000 1149456820 22564864 5236 1992294400 134512640 135224549 4294956224 18446744073709551615 134595325 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5509 5236 92 173 0 5334 0
Current children cumulated CPU time (s) 204.62
Current children cumulated vsize (KiB) 22036

[startup+211.101 s]
/proc/loadavg: 0.99 1.03 1.16 2/66 5571
/proc/meminfo: memFree=1789584/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=22036 CPUtime=211.02
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5351 0 0 0 21097 5 0 0 25 0 1 120000 1149456820 22564864 5237 1992294400 134512640 135224549 4294956224 18446744073709551615 134595322 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5509 5237 92 173 0 5334 0
Current children cumulated CPU time (s) 211.02
Current children cumulated vsize (KiB) 22036

[startup+214.303 s]
/proc/loadavg: 0.99 1.03 1.16 2/66 5571
/proc/meminfo: memFree=1789584/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=22300 CPUtime=214.22
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5422 0 0 0 21417 5 0 0 25 0 1 120000 1149456820 22835200 5308 1992294400 134512640 135224549 4294956224 18446744073709551615 134726486 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5575 5308 92 173 0 5400 0
Current children cumulated CPU time (s) 214.22
Current children cumulated vsize (KiB) 22300

[startup+215.901 s]
/proc/loadavg: 0.99 1.03 1.16 2/66 5571
/proc/meminfo: memFree=1788944/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=22828 CPUtime=215.81
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5542 0 0 0 21576 5 0 0 25 0 1 120000 1149456820 23375872 5428 1992294400 134512640 135224549 4294956224 18446744073709551615 134632717 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5707 5428 92 173 0 5532 0
Current children cumulated CPU time (s) 215.81
Current children cumulated vsize (KiB) 22828

[startup+216.705 s]
/proc/loadavg: 0.99 1.03 1.16 2/66 5571
/proc/meminfo: memFree=1788688/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=22960 CPUtime=216.62
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5593 0 0 0 21657 5 0 0 25 0 1 120000 1149456820 23511040 5479 1992294400 134512640 135224549 4294956224 18446744073709551615 134595278 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5740 5479 92 173 0 5565 0
Current children cumulated CPU time (s) 216.62
Current children cumulated vsize (KiB) 22960

[startup+216.901 s]
/proc/loadavg: 0.99 1.03 1.16 2/66 5571
/proc/meminfo: memFree=1788688/2055920 swapFree=4177732/4192956
[pid=5570] ppid=5568 vsize=23092 CPUtime=216.81
/proc/5570/stat : 5570 (CirCUs) R 5568 5570 5533 0 -1 4194304 5607 0 0 0 21676 5 0 0 25 0 1 120000 1149456820 23646208 5493 1992294400 134512640 135224549 4294956224 18446744073709551615 134595278 0 0 4096 8192 0 0 0 17 1 0 0
/proc/5570/statm: 5773 5493 92 173 0 5598 0
Current children cumulated CPU time (s) 216.81
Current children cumulated vsize (KiB) 23092

Child status: 0
Real time (s): 216.993
CPU time (s): 216.92
CPU user time (s): 216.856
CPU system time (s): 0.06399
CPU usage (%): 99.9665
Max. virtual memory (cumulated for all children) (KiB): 23092

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 216.856
system time used= 0.06399
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 5617
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= 5
involuntary context switches= 243

runsolver used 0.225965 second user time and 0.543917 second system time

The end

Launcher Data 

Begin job on node56 at 2009-04-03 16:12:25
IDJOB=1561663
IDBENCH=70919
IDSOLVER=544
FILE ID=node56/1561663-1238767945
PBS_JOBID= 9085528
Free space on /tmp= 103184 MiB

SOLVER NAME= CircUs 2009-03-23
BENCH NAME= SAT09/APPLICATIONS/edgematching/explicit/em_7_4_8_exp.cnf
COMMAND LINE= HOME/CirCUs BENCHNAME -t TIMEOUT
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1561663-1238767945/watcher-1561663-1238767945 -o /tmp/evaluation-result-1561663-1238767945/solver-1561663-1238767945 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/CirCUs HOME/instance-1561663-1238767945.cnf -t 1200

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= e0caa78f33b332fe4d9add2bb1044111
RANDOM SEED=1721839414

node56.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.256
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		: 3000.256
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:       1811024 kB
Buffers:         25948 kB
Cached:         142932 kB
SwapCached:       9280 kB
Active:          56232 kB
Inactive:       123324 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1811024 kB
SwapTotal:     4192956 kB
SwapFree:      4177732 kB
Dirty:            1640 kB
Writeback:           0 kB
Mapped:          16260 kB
Slab:            51260 kB
Committed_AS:  2913772 kB
PageTables:       1472 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= 103184 MiB
End job on node56 at 2009-04-03 16:16:03