[Nek5000-users] Example 'turbChannel' Emergency exit

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Wed Apr 14 03:25:48 CDT 2010


Hello NEKs,

in the last day I had a couple of problems with my runs, so I started 
again the turbChannel example on our machine to get a better feeling for 
the parameters. When I run the turbChannel example, the run stopped 
after 5172 time steps with an 'emergency exit' cause the CFL number is 
getting to high. Do you know from where does this occur?? I just added 
the output of the last time steps.

Best,
Fred


  5165  2.582500000E+01  3.916990657E-03  1.659821813E-03  
3.694680560E-01 e2
Step   5166, t= 2.5830000E+01, DT= 5.0000000E-03, C=  2.079 3.4805E+04 
1.3937E+01
             Solving for fluid
       5166    PRES alph1n  8.7741E+02  4.2415E+01  2.0687E+01    20
       5166    PRES halpha    20  1.1643E+01 -3.7137E+00  3.6211E-01 
-2.0448E-01 -1.6916E+00  8.2524E-01  1.1625E+00  8.9342E-01 -1.6984E-01 
-2.2222E-01

       5166    PRES gmres:       75   8.8674E-06   1.0000E-05   
8.5433E-02   4.1833E+00   9.7743E+00
       5166    Hmholtz VELX:     11   1.5456E-09   1.0149E+00   1.0000E-08
       5166    Hmholtz VELY:     11   3.0012E-09   1.9688E+00   1.0000E-08
       5166    Hmholtz VELZ:     11   2.5093E-09   1.8625E+00   1.0000E-08
               L1/L2 DIV(V)    :   4.9352E-18   9.2917E-01
               L1/L2 QTL       :   0.0000E+00   0.0000E+00
               L1/L2 DIV(V)-QTL:   4.9352E-18   9.2917E-01
               WARNING: DIV(V)-QTL too large!
       5166   2.5830E+01  1.3669E+01 Fluid done
 Calculating eddy visosity
  5166  2.583000000E+01  3.926052513E-03  1.662276122E-03  
3.689963050E-01 e2
Step   5167, t= 2.5835000E+01, DT= 5.0000000E-03, C=  2.889 3.4820E+04 
1.4982E+01
             Solving for fluid
       5167    PRES alph1n  1.5542E+03  7.1980E+02  2.1591E+00     1
       5167    PRES halpha     1  1.4480E+01
       5167    PRES gmres:       86   9.7160E-06   1.0000E-05   
9.3445E-01   4.7986E+00   1.1231E+01
       5167    Hmholtz VELX:     12   5.8389E-09   1.3413E+00   1.0000E-08
       5167    Hmholtz VELY:     13   3.9482E-09   2.9638E+00   1.0000E-08
       5167    Hmholtz VELZ:     13   3.5924E-09   2.6194E+00   1.0000E-08
               L1/L2 DIV(V)    :   3.1068E-18   1.2785E+00
               L1/L2 QTL       :   0.0000E+00   0.0000E+00
               L1/L2 DIV(V)-QTL:   3.1068E-18   1.2785E+00
               WARNING: DIV(V)-QTL too large!
       5167   2.5835E+01  1.5275E+01 Fluid done
 Calculating eddy visosity
  5167  2.583500000E+01  3.993359862E-03  1.664692380E-03  
3.685384235E-01 e2
Step   5168, t= 2.5840000E+01, DT= 5.0000000E-03, C=  3.423 3.4837E+04 
1.6588E+01
             Solving for fluid
       5168    PRES alph1n  3.9778E+03  3.8710E+03  1.0276E+00     2
       5168    PRES halpha     2  1.2944E+01  6.2999E-01
       5168    PRES gmres:       79   9.2196E-06   1.0000E-05   
4.3331E+00   4.4083E+00   1.0437E+01
       5168    Hmholtz VELX:     14   4.7243E-09   2.0176E+00   1.0000E-08
       5168    Hmholtz VELY:     14   6.8219E-09   4.6788E+00   1.0000E-08
       5168    Hmholtz VELZ:     15   1.8252E-09   4.0913E+00   1.0000E-08
               L1/L2 DIV(V)    :  -1.4831E-18   2.0942E+00
               L1/L2 QTL       :   0.0000E+00   0.0000E+00
               L1/L2 DIV(V)-QTL:  -1.4831E-18   2.0942E+00
               WARNING: DIV(V)-QTL too large!
       5168   2.5840E+01  1.4678E+01 Fluid done
 Calculating eddy visosity
  5168  2.584000000E+01  4.200707570E-03  1.667064185E-03  
3.681057305E-01 e2
Step   5169, t= 2.5845000E+01, DT= 5.0000000E-03, C=  5.530 3.4853E+04 
1.5991E+01
             Solving for fluid
       5169    PRES alph1n  7.2030E+03  3.1162E+03  2.3115E+00     3
       5169    PRES halpha     3 -6.0424E+01 -1.0653E+01 -8.4291E+00
       5169    PRES gmres:       97   9.6453E-06   1.0000E-05   
3.9350E+00   5.4119E+00   1.2493E+01
       5169    Hmholtz VELX:     11   4.1711E-09   1.9124E+00   1.0000E-08
       5169    Hmholtz VELY:     11   7.0818E-09   3.3758E+00   1.0000E-08
       5169    Hmholtz VELZ:     11   9.3833E-09   4.3104E+00   1.0000E-08
               L1/L2 DIV(V)    :   5.4916E-18   2.0864E+00
               L1/L2 QTL       :   0.0000E+00   0.0000E+00
               L1/L2 DIV(V)-QTL:   5.4916E-18   2.0864E+00
               WARNING: DIV(V)-QTL too large!
       5169   2.5845E+01  1.6361E+01 Fluid done
 Calculating eddy visosity
  5169  2.584500000E+01  4.167598852E-03  1.701730652E-03  
3.676193877E-01 e2
Step   5170, t= 2.5850000E+01, DT= 5.0000000E-03, C=  6.006 3.4871E+04 
1.7673E+01
             Solving for fluid
       5170    PRES alph1n  3.8504E+03  2.1151E+03  1.8205E+00     4
       5170    PRES halpha     4 -4.5903E+00  2.8727E+00  1.4775E+00 
-3.0313E+01
       5170    PRES gmres:       95   9.5031E-06   1.0000E-05   
2.9323E+00   5.3008E+00   1.2248E+01
       5170    Hmholtz VELX:     11   2.9823E-09   2.3489E+00   1.0000E-08
       5170    Hmholtz VELY:     11   5.2939E-09   5.2327E+00   1.0000E-08
       5170    Hmholtz VELZ:     11   8.5864E-09   6.0722E+00   1.0000E-08
               L1/L2 DIV(V)    :  -1.3376E-19   1.6752E+00
               L1/L2 QTL       :   0.0000E+00   0.0000E+00
               L1/L2 DIV(V)-QTL:  -1.3376E-19   1.6752E+00
               WARNING: DIV(V)-QTL too large!
       5170   2.5850E+01  1.6120E+01 Fluid done
 Calculating eddy visosity
  5170  2.585000000E+01  4.085734913E-03  1.716209642E-03  
3.671058529E-01 e2
Step   5171, t= 2.5855000E+01, DT= 5.0000000E-03, C=  4.227 3.4888E+04 
1.7434E+01
             Solving for fluid
       5171    PRES alph1n  5.0358E+03  1.2448E+03  4.0456E+00     5
       5171    PRES halpha     5 -6.9028E+00 -1.4184E+00 -4.2028E+01 
-1.2786E+01 -2.1059E+01
       5171    PRES gmres:       92   9.4249E-06   1.0000E-05   
1.6822E+00   5.1338E+00   1.1887E+01
       5171    Hmholtz VELX:     11   2.1456E-09   2.9780E+00   1.0000E-08
       5171    Hmholtz VELY:     11   5.3606E-09   7.0811E+00   1.0000E-08
       5171    Hmholtz VELZ:     11   5.8359E-09   6.8710E+00   1.0000E-08
               L1/L2 DIV(V)    :  -1.6210E-17   3.1098E+00
               L1/L2 QTL       :   0.0000E+00   0.0000E+00
               L1/L2 DIV(V)-QTL:  -1.6210E-17   3.1098E+00
               WARNING: DIV(V)-QTL too large!
       5171   2.5855E+01  1.5761E+01 Fluid done
 Calculating eddy visosity
  5171  2.585500000E+01  4.389947285E-03  1.720108719E-03  
3.665677180E-01 e2
Step   5172, t= 2.5860000E+01, DT= 5.0000000E-03, C= 14.041 3.4905E+04 
1.7076E+01
             Solving for fluid
       5172    PRES alph1n  9.0973E+04  3.3755E+04  2.6951E+00     6
       5172    PRES halpha     6 -5.1818E+02 -1.4428E+02 -8.2239E+02 
-5.2616E+01  6.5613E+01  2.1168E+02
       5172    PRES gmres:      132   9.6516E-06   1.0000E-05   
4.3975E+01   7.3637E+00   1.7181E+01
       5172    Hmholtz VELX:     32   8.9325E-09   4.2902E+01   1.0000E-08
       5172    Hmholtz VELY:     33   6.7432E-09   1.0998E+02   1.0000E-08
       5172    Hmholtz VELZ:     33   8.7122E-09   9.2142E+01   1.0000E-08
               L1/L2 DIV(V)    :  -4.3714E-18   1.8897E+01
               L1/L2 QTL       :   0.0000E+00   0.0000E+00
               L1/L2 DIV(V)-QTL:  -4.3714E-18   1.8897E+01
               WARNING: DIV(V)-QTL too large!
       5172   2.5860E+01  2.3473E+01 Fluid done
 Calculating eddy visosity
  5172  2.586000000E+01  4.640317048E-02  1.721776888E-03  
3.660847580E-01 e2
 CFL, Ctarg!   77.0972671240189        2.00000000000000

     5173  2.5860E+01 Write checkpoint:

     5173  2.5860E+01 OPEN: turbChannel.fld06

           1  Emergency exit:        5173    time =   25.8599999999991
  Latest solution and data are dumped for post-processing.
  *** STOP ***

           0  Emergency exit:        5173    time =   25.8599999999991
  Latest solution and data are dumped for post-processing.
   *** STOP ***
           0  opcount   7939907566848.00
           1  opcount   7939907566848.00
  TOTAL OPCOUNT   15879815133696.0
   opnode   0  subcl4      0.000000               0
   opnode   0  ascol5      0.000000               0
   opnode   0  invcl3     0.1355809E+10       10344
   opnode   0  vlsum      0.1355809E+10     2648064
   opnode   0  inver2     0.1355809E+10       10344
   opnode   0  cadd2      0.2033713E+10       15516
   opnode   0  admcol     0.2033713E+10        5172
   opnode   0  invcl1     0.2033713E+10       15516
   opnode   0  vsqrt      0.3389915E+10     2663583
   opnode   0  opa2cl     0.4067426E+10        5172
   opnode   0  subcl3     0.4067426E+10       15516
   opnode   0  sub3       0.4747952E+10       37499
   opnode   0  sub2       0.1152359E+11     8001078
   opnode   0  opcv3c     0.1219992E+11       15513
   opnode   0  add3s2     0.1220228E+11       31032
   opnode   0  VLSC2      0.1285580E+11       49041
   opnode   0  cadd       0.1391945E+11      106197
   opnode   0  invcl2     0.1423639E+11    19891515
   opnode   0  opcolv     0.2643827E+11       67236
   opnode   0  add2s1     0.2927781E+11      111686
   opnode   0  glsc2      0.3054948E+11      116537
   opnode   0  ADD3       0.3129265E+11    61118464
   opnode   0  cmult      0.4078676E+11    64159596
   opnode   0  addcl4     0.4189481E+11      106544
   opnode   0  col3       0.6824224E+11    32173287
   opnode   0  ADD2       0.8181750E+11    85243418
   opnode   0  glsc3      0.8983806E+11      228470
   opnode   0  addcl3     0.1057688E+12    63724056
   opnode   0  col2       0.2130625E+12   254874963
   opnode   0  add2s2     0.3703272E+12     1412686
   opnode   0  VLSC3      0.4606404E+12     1171469
   opnode   0  mxm        0.6246592E+13 -1613811570
 total time   34934.7607588768        34931.1205290364
 copy time           0  0.000000000000000E+000  0.000000000000000E+000
 mxmf time           0  0.000000000000000E+000  0.000000000000000E+000
 inv3 time       10344   15.3735277652740       4.401097798307057E-004
 invc time    19891515   146.002576589584       4.179727829464278E-003
 mltd time       62064   4038.74821758270       0.115620345308577
 cdtp time       15516   437.695099830627       1.253023359118396E-002
 eslv time           0  0.000000000000000E+000  0.000000000000000E+000
 pres time        5172   14242.1249115467       0.407720241888833
 crsl time       90681   47.9217271804810       1.371892068009847E-003
 crsl min    47.9217271804810
 crsl max    53.2970800399780
 crsl avg    50.6094036102295
 hmhz time       15521   15087.4339959621       0.431919553895237
 usbc time        5173   85.1574075222015       2.437866470713835E-003
 axhm time      238766   6975.35609674454       0.199688873162437
 advc time -1333526528  2.332305834658064E-310  6.676870938527185E-315
 gop  time      878153   62.8719458580017       1.799883453659598E-003
 gop  min    62.8719387054443
 gop  max    118.545093774796
 gop  avg    90.7085191011429
 vdss time       25861   108.827995061874       3.115502549407525E-003
 vdss min    108.827995061874
 vdss max    108.830206155777
 vdss avg    108.829100608826
 dsum time      334612   471.267515897751       1.349133691563118E-002
 dsum min    440.130956649780
 dsum max    471.267515897751
 dsum avg    455.699236273766
 gsum time           0  0.000000000000000E+000  0.000000000000000E+000
 dsnd time           0  0.000000000000000E+000  0.000000000000000E+000
 dadd time           0  0.000000000000000E+000  0.000000000000000E+000
 dsmx time           0  0.154825925827026       4.432320620757866E-006
 dsmn time           0  1.043796539306641E-003  2.988156473363023E-008
 slvb time           0  0.000000000000000E+000  0.000000000000000E+000
 ddsl time           0  0.000000000000000E+000  0.000000000000000E+000
 solv time           0  0.000000000000000E+000  0.000000000000000E+000
 sett time           0  0.000000000000000E+000  0.000000000000000E+000
 prep time        5173   12.7582430839539       3.652400178044276E-004
 bsol time           0  0.000000000000000E+000  0.000000000000000E+000
 bso2 time           0  0.000000000000000E+000  0.000000000000000E+000
#  nid       tusbc       tdadd       tcrsl       tvdss       
tdsum        tgop    qqq
        0  8.5157E+01  0.0000E+00  4.7922E+01  1.0883E+02  4.7127E+02  
6.2872E+01 qqq
        1  8.8959E+01  0.0000E+00  5.3297E+01  1.0883E+02  4.4013E+02  
1.1855E+02 qqq

call exitt: dying ...

backtrace(): obtained 11 stack frames.
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(print_stack_+0x26) 
[0x5d34ca]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(exitt_+0x34e) 
[0x6eb7ce]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(emerxit_+0x63c) 
[0x52deaa]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(setdt_+0xc9a) 
[0x52098a]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(settime_+0xb7) 
[0x4210a1]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(nek_advance_+0x27) 
[0x41d185]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(nek_solve_+0x2d1) 
[0x41d0d3]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(MAIN__+0x3b) 
[0x41bfaf]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(main+0x3c) 
[0x415b8c]
/lib/libc.so.6(__libc_start_main+0xda) [0x2aef191be4ca]
/data2/DATEN/frederik/nek5/examples/turbChannel/nek5000(for_write_seq_fmt_xmit+0x3a) 
[0x415aba]

total elapsed time             :   3.49348E+04 sec
total solver time incl. I/O    :   3.49051E+04 sec
time/timestep                  :   6.74756E+00 sec
CPU seconds/timestep/DOF       :   7.82568E-05 sec




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