Changeset 7143


Ignore:
Timestamp:
Jun 2, 2009, 8:52:47 AM (16 years ago)
Author:
ole
Message:

Thought a bit more about the flux optimisation implemented in changeset:7105

The y-momentum limiter has been reinstated. Instead, I implemented a cut-off for limiting the momentum as described in the manual (see Section about flux limiter). For the simple profile compute_fluxes now takes 2.964s (as opposed to 4.284s prior to changeset:7105) and the overall runtime of evolve takes 9.797s (as opposed to 10.909s). For the okushiri example the timings are now 109.551s for compute_fluxes and 293.314s overall.

Overall this amounts to a 10% overall performance improvement.

See also changeset:6703 for past timings

These timings were conducted on a 3.0GHz Intel Core-2 running Ubuntu Linux.

I had to updated a few tests that used to compare to exact values that are now slightly different.

Location:
anuga_core/source/anuga/shallow_water
Files:
3 edited

Legend:

Unmodified
Added
Removed

  • anuga_core/source/anuga/shallow_water/shallow_water_ext.c

    r7105 r7143  
    174174                      double *h,
    175175                      double epsilon,
    176                       double h0) {
     176                      double h0,
     177                      double limiting_threshold) {
    177178 
    178179  double u;
    179180
    180  
    181   if (*h < epsilon) {
    182     *h = 0.0;  // Could have been negative
    183     u = 0.0;
     181  if (*h < limiting_threshold) {   
     182    // Apply limiting of speeds according to the ANUGA manual
     183    if (*h < epsilon) {
     184      *h = 0.0;  // Could have been negative
     185      u = 0.0;
     186    } else {
     187      u = *uh/(*h + h0/ *h);   
     188    }
     189 
     190
     191    // Adjust momentum to be consistent with speed
     192    *uh = u * *h;
    184193  } else {
    185     u = *uh/(*h + h0/ *h);   
     194    // We are in deep water - no need for limiting
     195    u = *uh/ *h;
    186196  }
    187  
    188 
    189   // Adjust momentum to be consistent with speed
    190   *uh = u * *h;
    191197 
    192198  return u;
    … …  
    253259                           double z_left, double z_right,
    254260                           double n1, double n2,
    255                            double epsilon, double H0, double g,
     261                           double epsilon,
     262                           double h0,
     263                           double limiting_threshold,
     264                           double g,
    256265                           double *edgeflux, double *max_speed)
    257266{
    … …  
    272281  double w_left, h_left, uh_left, vh_left, u_left;
    273282  double w_right, h_right, uh_right, vh_right, u_right;
    274   //double v_left, v_right; 
    275283  double s_min, s_max, soundspeed_left, soundspeed_right;
    276284  double denom, inverse_denominator, z;
    … …  
    279287  static double q_left_rotated[3], q_right_rotated[3], flux_right[3], flux_left[3];
    280288
    281   double h0 = H0*H0; // This ensures a good balance when h approaches H0.
    282                      // But evidence suggests that h0 can be as little as
    283                      // epsilon!
    284  
    285289  // Copy conserved quantities to protect from modification
    286290  q_left_rotated[0] = q_left[0];
    … …  
    306310  h_left = w_left - z;
    307311  uh_left = q_left_rotated[1];
    308   u_left = _compute_speed(&uh_left, &h_left, epsilon, h0);
     312  u_left = _compute_speed(&uh_left, &h_left,
     313                          epsilon, h0, limiting_threshold);
    309314
    310315  w_right = q_right_rotated[0];
    311316  h_right = w_right - z;
    312317  uh_right = q_right_rotated[1];
    313   u_right = _compute_speed(&uh_right, &h_right, epsilon, h0); 
     318  u_right = _compute_speed(&uh_right, &h_right,
     319                           epsilon, h0, limiting_threshold);
    314320
    315321  // Momentum in y-direction
    … …  
    320326  // Leaving this out, improves speed significantly (Ole 27/5/2009)
    321327  // All validation tests pass, so do we really need it anymore?
    322   //v_left = _compute_speed(&vh_left, &h_left, epsilon, h0);
    323   //v_right = _compute_speed(&vh_right, &h_right, epsilon, h0);
     328  _compute_speed(&vh_left, &h_left,
     329                 epsilon, h0, limiting_threshold);
     330  _compute_speed(&vh_right, &h_right,
     331                 epsilon, h0, limiting_threshold);
    324332
    325333  // Maximal and minimal wave speeds
    … …  
    367375  denom = s_max - s_min;
    368376  if (denom < epsilon)
    369   { // FIXME (Ole): Try using H0 here
     377  { // FIXME (Ole): Try using h0 here
    370378    memset(edgeflux, 0, 3*sizeof(double));
    371379    *max_speed = 0.0;
    … …  
    429437
    430438  double h0 = H0*H0; //This ensures a good balance when h approaches H0.
    431 
     439  double limiting_threshold = 10*H0; // Avoid applying limiter below this 
     440 
    432441  //Copy conserved quantities to protect from modification
    433442  for (i=0; i<3; i++) {
    … …  
    446455  h_left = w_left-z;
    447456  uh_left = q_left_rotated[1];
    448   u_left =_compute_speed(&uh_left, &h_left, epsilon, h0);
     457  u_left =_compute_speed(&uh_left, &h_left,
     458                         epsilon, h0, limiting_threshold);
    449459
    450460  w_right = q_right_rotated[0];
    451461  h_right = w_right-z;
    452462  uh_right = q_right_rotated[1];
    453   u_right =_compute_speed(&uh_right, &h_right, epsilon, h0); 
     463  u_right =_compute_speed(&uh_right, &h_right,
     464                          epsilon, h0, limiting_threshold);
    454465
    455466
    … …  
    930941  PyArrayObject *normal, *ql, *qr,  *edgeflux;
    931942  double g, epsilon, max_speed, H0, zl, zr;
     943  double h0, limiting_threshold;
    932944
    933945  if (!PyArg_ParseTuple(args, "OOOddOddd",
    … …  
    939951
    940952 
     953  h0 = H0*H0; // This ensures a good balance when h approaches H0.
     954              // But evidence suggests that h0 can be as little as
     955              // epsilon!
     956             
     957  limiting_threshold = 10*H0; // Avoid applying limiter below this
     958                              // threshold for performance reasons.
     959                              // See ANUGA manual under flux limiting 
     960 
    941961  _flux_function_central((double*) ql -> data,
    942              (double*) qr -> data,
    943              zl,
    944              zr,                         
    945              ((double*) normal -> data)[0],
    946              ((double*) normal -> data)[1],         
    947              epsilon, H0, g,
    948              (double*) edgeflux -> data,
    949              &max_speed);
     962                         (double*) qr -> data,
     963                         zl,
     964                         zr,                         
     965                         ((double*) normal -> data)[0],
     966                         ((double*) normal -> data)[1],         
     967                         epsilon, h0, limiting_threshold,
     968                         g,
     969                         (double*) edgeflux -> data,
     970                         &max_speed);
    950971 
    951972  return Py_BuildValue("d", max_speed); 
    … …  
    17861807  // Local variables
    17871808  double max_speed, length, inv_area, zl, zr;
     1809  double h0 = H0*H0; // This ensures a good balance when h approaches H0.
     1810
     1811  double limiting_threshold = 10*H0; // Avoid applying limiter below this
     1812                                     // threshold for performance reasons.
     1813                                     // See ANUGA manual under flux limiting
    17881814  int k, i, m, n;
    17891815  int ki, nm=0, ki2; // Index shorthands
     1816 
    17901817 
    17911818  // Workspace (making them static actually made function slightly slower (Ole)) 
    … …  
    17931820
    17941821  static long call = 1; // Static local variable flagging already computed flux
    1795                   
     1822 
    17961823  // Start computation
    17971824  call++; // Flag 'id' of flux calculation for this timestep
    … …  
    18791906      _flux_function_central(ql, qr, zl, zr,
    18801907                             normals[ki2], normals[ki2+1],
    1881                              epsilon, H0, g,
     1908                             epsilon, h0, limiting_threshold, g,
    18821909                             edgeflux, &max_speed);
    18831910     

  • anuga_core/source/anuga/shallow_water/test_data_manager.py

    r7105 r7143  
    232232    def test_sww_range(self):
    233233        """Test that constant sww information can be written correctly
    234         (non smooth)
     234        Use non-smooth to be able to compare to quantity values.
    235235        """
    236236        self.domain.set_name('datatest' + str(id(self)))
    237237        self.domain.format = 'sww'
    238         self.domain.smooth = True
    239 
    240         self.domain.tight_slope_limiters = 0 # Backwards compatibility
    241         self.domain.use_centroid_velocities = 0 # Backwards compatibility (7/5/8)
    242        
     238        self.domain.set_store_vertices_uniquely(True)
    243239       
    244240        sww = get_dataobject(self.domain)       
    245241
     242        dqs = self.domain.get_quantity('stage')
     243        dqx = self.domain.get_quantity('xmomentum')
     244        dqy = self.domain.get_quantity('ymomentum')       
     245        xmom_min = ymom_min = stage_min = sys.maxint
     246        xmom_max = ymom_max = stage_max = -stage_min       
    246247        for t in self.domain.evolve(yieldstep = 1, finaltime = 1):
    247             pass
     248            wmax = max(dqs.get_values().flat)
     249            if wmax > stage_max: stage_max = wmax
     250            wmin = min(dqs.get_values().flat)
     251            if wmin < stage_min: stage_min = wmin           
     252           
     253            uhmax = max(dqx.get_values().flat)
     254            if uhmax > xmom_max: xmom_max = uhmax
     255            uhmin = min(dqx.get_values().flat)
     256            if uhmin < xmom_min: xmom_min = uhmin                       
     257           
     258            vhmax = max(dqy.get_values().flat)
     259            if vhmax > ymom_max: ymom_max = vhmax
     260            vhmin = min(dqy.get_values().flat)
     261            if vhmin < ymom_min: ymom_min = vhmin                                   
     262           
     263           
    248264           
    249265        # Get NetCDF
    … …  
    252268        # Get the variables
    253269        range = fid.variables['stage_range'][:]
    254         #print range
    255         assert num.allclose(range,[-0.93519, 0.15]) or\
    256                num.allclose(range,[-0.9352743, 0.15]) or\
    257                num.allclose(range,[-0.93522203, 0.15000001]) # Old slope limiters
    258        
     270        assert num.allclose(range,[stage_min, stage_max])
     271
    259272        range = fid.variables['xmomentum_range'][:]
    260273        #print range
    261         assert num.allclose(range,[0,0.4695096]) or \
    262                num.allclose(range,[0,0.47790655]) or\
    263                num.allclose(range,[0,0.46941957]) or\
    264                num.allclose(range,[0,0.47769409]) or\
    265                num.allclose(range,[0,0.47738948])
    266 
     274        assert num.allclose(range, [xmom_min, xmom_max])
     275       
    267276       
    268277        range = fid.variables['ymomentum_range'][:]
    269278        #print range
    270         assert num.allclose(range,[0,0.02174380]) or\
    271                num.allclose(range,[0,0.02174439]) or\
    272                num.allclose(range,[0,0.02283983]) or\
    273                num.allclose(range,[0,0.0217342]) or\
    274                num.allclose(range,[0,0.02258024]) or\
    275                num.allclose(range,[0,0.0227564]) # Old slope limiters
     279        assert num.allclose(range, [ymom_min, ymom_max])       
     280
    276281
    277282       

  • anuga_core/source/anuga/shallow_water/test_shallow_water_domain.py

    r7105 r7143  
    271271        edgeflux = num.zeros( 3, num.Float )
    272272        zl = zr = 0.
    273         H0 = 0.0
     273
     274        H0 = 1.0e-3 # As suggested in the manual
    274275       
    275276        max_speed = flux_function(normal, ql, qr, zl, zr, edgeflux, epsilon, g, H0)
    276277
     278        #print edgeflux
    277279        assert num.allclose(edgeflux, [0,0,0])
    278280        assert max_speed == 0.
    … …  
    17591761        points, vertices, boundary = rectangular_cross(10, 10) # Basic mesh
    17601762        domain = Domain(points, vertices, boundary) # Create domain
    1761         domain.set_default_order(1)       
     1763        domain.set_default_order(2)       
    17621764        domain.set_quantities_to_be_stored(None)
    1763         domain.set_maximum_allowed_speed(100) #FIXME (Ole): try to remove this
    1764        
    1765         # FIXME (Ole): Need tests where this is commented out
    1766         domain.tight_slope_limiters = 0 # Backwards compatibility (14/4/7)
    1767         domain.H0 = 0 # Backwards compatibility (6/2/7)
    1768         domain.use_centroid_velocities = 0 # Backwards compatibility (7/5/8)
     1765        domain.H0 = 1.0e-3
    17691766       
    17701767
    … …  
    18201817        #Reference (nautilus 26/6/2008)
    18211818       
    1822         G0 = [-0.20000000000000001, -0.20000000000000001, -0.19920600846161715, -0.19153647344085376, -0.19127622768281194, -0.1770671909675095, -0.16739412133181927, -0.16196038919122191, -0.15621633053131384, -0.15130021599977705, -0.13930978857215484, -0.19349274358263582, -0.19975307598803765, -0.19999897143103357, -0.1999999995532111, -0.19999999999949952, -0.19999999999949952, -0.19999999999949952, -0.19997270012494556, -0.19925805948554556, -0.19934513778450533, -0.19966484196394893, -0.1997352860102084, -0.19968260481750394, -0.19980280797303882, -0.19998804881822749, -0.19999999778075916, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167, -0.19999999999966167]
    1823 
    1824         G1 = [-0.29999999999999993, -0.29999588068034899, -0.29250047332330331, -0.28335081844518584, -0.26142206997410805, -0.22656028856329835, -0.21224087216745585, -0.19934324109114465, -0.1889857939783175, -0.18146311603911383, -0.17401078727434263, -0.15419361061257214, -0.16225060576782063, -0.19010941396999181, -0.20901161407004412, -0.21670683975774699, -0.21771386270738891, -0.21481284465869752, -0.21063120869004387, -0.20669243364582401, -0.20320707386714859, -0.19984087691926442, -0.19725417448019505, -0.19633783049069981, -0.19650494599999785, -0.19708316838336942, -0.19779309449413818, -0.19853070294429562, -0.19917342167307153, -0.19964814677795845, -0.19991627610824922, -0.20013162970144974, -0.20029864969405509, -0.20036259676501131, -0.20030682824965193, -0.20016105135750167, -0.19997664501985918, -0.19980185871568762, -0.19966836175417696, -0.19958856744312226, -0.19955954696194517, -0.19956950051110917, -0.19960377086336181, -0.19964885299433241, -0.19969427478531132, -0.19973301547655564, -0.19976121574277764, -0.19977765285688653, -0.19978315117522441, -0.19977994634841739, -0.19977101394878494]
    1825        
    1826         G2 = [-0.40000000000000002, -0.39077401254732241, -0.33350466136630474, -0.29771023004255281, -0.27605439066140897, -0.25986156218997497, -0.24502185018573647, -0.231792624329521, -0.21981564668803993, -0.20870707082936543, -0.19877739883776599, -0.18980922837977957, -0.17308011674005838, -0.16306400164013773, -0.17798470933304333, -0.1929554075869116, -0.20236705191987037, -0.20695767560655007, -0.20841025876092567, -0.20792102174869989, -0.20655350005579293, -0.20492002526259828, -0.20310627026780645, -0.20105983335287836, -0.19937394565794653, -0.19853917506699659, -0.19836389977624452, -0.19850305023602796, -0.19877764028836831, -0.19910928131034669, -0.19943705712418805, -0.19970344172958865, -0.19991076989870474, -0.20010020127747646, -0.20025937787100062, -0.20035087292905965, -0.20035829921463297, -0.20029606557316171, -0.20019606915365515, -0.20009096093399206, -0.20000371608204368, -0.19994495432920584, -0.19991535665176338, -0.19990981826533513, -0.19992106419898723, -0.19994189853516578, -0.19996624091229293, -0.19998946016985167, -0.20000842303470234, -0.20002144460718174, -0.20002815561337187]
    1827        
    1828         G3 = [-0.45000000000000001, -0.37631169657400332, -0.33000044342859486, -0.30586045469008522, -0.28843572253009941, -0.27215308978603808, -0.25712951540331219, -0.2431608296216613, -0.23032023651386374, -0.2184546873456619, -0.20735123704254332, -0.19740397194806389, -0.1859829564064375, -0.16675980728362105, -0.16951575032846536, -0.1832860872609344, -0.19485758939241243, -0.20231368291811427, -0.20625610376074754, -0.20758116241495619, -0.20721445402086161, -0.20603406830353785, -0.20450262808396991, -0.2026769581185151, -0.2007401212066364, -0.19931160535777592, -0.19863606301128725, -0.19848511940572691, -0.19860091042948352, -0.19885490669377764, -0.19916542732701112, -0.19946678238611959, -0.19971209594104697, -0.19991912886512292, -0.2001058430788881, -0.20024959409472989, -0.20032160254609382, -0.20031583165752354, -0.20025051539293123, -0.2001556115816068, -0.20005952955420872, -0.1999814429561611, -0.19992977821558131, -0.19990457708664208, -0.19990104785490476, -0.19991257153954825, -0.19993258231880562, -0.19995548502882532, -0.19997700760919687, -0.19999429663503748, -0.20000588800248761]
    1829        
    1830         #FIXME (DSG):This is a hack so the anuga install, not precompiled
    1831         # works on DSG's win2000, python 2.3
    1832         #The problem is the gauge_values[X] are 52 long, not 51.
    1833         #
    1834         # This was probably fixed by Stephen in changeset:3804
    1835         #if len(gauge_values[0]) == 52: gauge_values[0].pop()
    1836         #if len(gauge_values[1]) == 52: gauge_values[1].pop()
    1837         #if len(gauge_values[2]) == 52: gauge_values[2].pop()
    1838         #if len(gauge_values[3]) == 52: gauge_values[3].pop()
    1839 
    1840 ##         print len(G0), len(gauge_values[0])
    1841 ##         print len(G1), len(gauge_values[1])
    1842        
    1843         #print gauge_values[3]
    1844         #print G0[:4]
    1845         #print array(gauge_values[0])-array(G0)
    1846        
     1819        G0 = [-0.20000000000000001, -0.20000000000000001, -0.20000000000000001, -0.1958465301767274, -0.19059602372752493, -0.18448466250700923, -0.16979321333876071, -0.15976372740651074, -0.1575649333345176, -0.15710373731900584, -0.1530922283220747, -0.18836084336565725, -0.19921529311644628, -0.19923451799698919, -0.19923795414410964, -0.19923178806924047, -0.19925157557666154, -0.19930747801697429, -0.1993266428576112, -0.19932004930281799, -0.19929691326931867, -0.19926285267313795, -0.19916645449780995, -0.1988942593296438, -0.19900620256621993, -0.19914327423060865, -0.19918708440899577, -0.19921557252449132, -0.1992404368022069, -0.19925070370697717, -0.19925975477892274, -0.1992671090445659, -0.19927254203777162, -0.19927631910959256, -0.19927843552031504, -0.19927880339239365, -0.19927763204453783, -0.19927545249577633, -0.19927289590622824, -0.19927076261495152, -0.19926974334736983, -0.19927002562760332, -0.19927138236272213, -0.1992734501064522, -0.19927573251318192, -0.19927778936001547, -0.1992793776883893, -0.19928040577720926, -0.19928092586206753, -0.19928110982948721, -0.19928118887248453]
     1820
     1821        G1 = [-0.29999999999999993, -0.29999999999999993, -0.29139135018319512, -0.27257394456094503, -0.24141437432643265, -0.22089173942479151, -0.20796171092975532, -0.19874580192293825, -0.19014580508752857, -0.18421165368665365, -0.18020808282748838, -0.17518824759550247, -0.16436633464497749, -0.18714479115225544, -0.2045242886738807, -0.21011244240826329, -0.21151316017424124, -0.21048112933621732, -0.20772920477355789, -0.20489184334204144, -0.20286043930678221, -0.20094305756540246, -0.19948172752345467, -0.19886725178309209, -0.1986680808256765, -0.19860718133373548, -0.19862076543539733, -0.19888949069732539, -0.19932190310819023, -0.19982482967777454, -0.20036045468470615, -0.20064263130562704, -0.2007255389410077, -0.20068815669152493, -0.20057471332984647, -0.20042203940851802, -0.20026779013499779, -0.20015995671464712, -0.2000684005446525, -0.20001486753189174, -0.20000743467898013, -0.20003739771775905, -0.20008784600912621, -0.20013758305093884, -0.20017277554845025, -0.20018629233766885, -0.20018106288462198, -0.20016648079299326, -0.20015155958426531, -0.20014259747382254, -0.20014096648362509]
     1822       
     1823       
     1824        G2 = [-0.40000000000000002, -0.38885199453206343, -0.33425057028323962, -0.30154253721772117, -0.27624597383474103, -0.26037811196890087, -0.24415404585285019, -0.22941383121091052, -0.21613496492144549, -0.20418199946908885, -0.19506212965221825, -0.18851924999737435, -0.18271143344718843, -0.16910750701722474, -0.17963775224176018, -0.19442870510406052, -0.20164216917300118, -0.20467219452758528, -0.20608246104917802, -0.20640259931640445, -0.2054749739152594, -0.20380549124050265, -0.20227296931678532, -0.20095834856297176, -0.20000430919304379, -0.19946673053844086, -0.1990733499211611, -0.19882136174363013, -0.19877442300323914, -0.19905182154377868, -0.19943266521643804, -0.19988524183849191, -0.20018905307631765, -0.20031895675727809, -0.20033991149804931, -0.20031574232920274, -0.20027004750680638, -0.20020472427796293, -0.20013382447039607, -0.2000635018536408, -0.20001515436367642, -0.19998427691514989, -0.19997263083178107, -0.19998545383896535, -0.20000134502238734, -0.2000127243362736, -0.20001564474711939, -0.20001267360809977, -0.20002707579781318, -0.20004087961702843, -0.20004212947389177]
     1825       
     1826        G3 = [-0.45000000000000001, -0.38058172993544187, -0.33756059941741273, -0.31015371357441396, -0.29214769368562965, -0.27545447937118606, -0.25871585649808154, -0.24254276680581988, -0.22758633129006092, -0.21417276895743134, -0.20237184768790789, -0.19369491041576814, -0.18721625333717057, -0.1794243868465818, -0.17052113574042196, -0.18534300640363346, -0.19601184621026671, -0.20185028431829469, -0.20476187496918136, -0.20602933256960082, -0.20598569228739247, -0.20492643756666848, -0.20339695828762758, -0.20196440373022595, -0.20070304052919338, -0.19986227854052355, -0.19933020476408528, -0.19898034831018035, -0.19878317651286193, -0.19886879323961787, -0.19915860801206181, -0.19953675278099042, -0.19992828019602107, -0.20015957043092364, -0.20025268671087426, -0.20028559516444974, -0.20027084877341045, -0.20022991487243985, -0.20016234295579871, -0.20009131445092507, -0.20003149397006523, -0.19998473356473795, -0.19996011913447218, -0.19995647168667186, -0.19996526209120422, -0.19996600297827097, -0.19997268800221216, -0.19998682275066659, -0.20000372259781876, -0.20001628681983963, -0.2000173314086407]
    18471827       
    18481828        assert num.allclose(gauge_values[0], G0)
    1849         #print
    1850         #print gauge_values[1]
    1851         #print
    1852         #print G1
    1853         # FIXME(Ole): Disabled when ticket:314 was resolved.
    1854         # The slight change might in fact be for the better.
    1855         #assert num.allclose(gauge_values[1], G1)
     1829        assert num.allclose(gauge_values[1], G1)
    18561830        assert num.allclose(gauge_values[2], G2)
    18571831        assert num.allclose(gauge_values[3], G3)       
    … …  
    42944268        domain.beta_vh     = 0.9
    42954269        domain.beta_vh_dry = 0.9
    4296         domain.H0 = 0 # Backwards compatibility (6/2/7)       
     4270        domain.H0 = 1.0e-3
    42974271       
    42984272        # Boundary conditions
    … …  
    43194293
    43204294        assert num.allclose(domain.quantities['stage'].vertex_values[:12,0],
    4321                             [0.0001714, 0.02656103, 0.00024152,
    4322                              0.02656103, 0.00024152, 0.02656103,
    4323                              0.00024152, 0.02656103, 0.00024152,
    4324                              0.02656103, 0.00024152, 0.0272623])
    4325 
     4295                            [0.001, 0.02656103, 0.001, 0.02656103, 0.001, 0.02656103,
     4296                             0.001, 0.02656103, 0.001, 0.02656103, 0.001, 0.0272623])     
     4297                             
    43264298        assert num.allclose(domain.quantities['stage'].vertex_values[:12,1],
    4327                             [0.00315012, 0.02656103, 0.00024152, 0.02656103,
    4328                              0.00024152, 0.02656103, 0.00024152, 0.02656103,
    4329                              0.00024152, 0.02656103, 0.00040506, 0.0272623])
     4299                            [0.00237867, 0.02656103, 0.001, 0.02656103, 0.001,
     4300                             0.02656103, 0.001, 0.02656103, 0.001, 0.02656103,
     4301                             0.00110647, 0.0272623])
    43304302
    43314303        assert num.allclose(domain.quantities['stage'].vertex_values[:12,2],
    4332                             [0.00182037, 0.02656103, 0.00676264,
    4333                              0.02656103, 0.00676264, 0.02656103,
    4334                              0.00676264, 0.02656103, 0.00676264,
    4335                              0.02656103, 0.0065991, 0.0272623])
     4304                            [0.00176321, 0.02656103, 0.00524568,
     4305                             0.02656103, 0.00524568, 0.02656103,
     4306                             0.00524568, 0.02656103, 0.00524568,
     4307                             0.02656103, 0.00513921, 0.0272623])
    43364308
    43374309        assert num.allclose(domain.quantities['xmomentum'].centroid_values[:12],
    … …  
    43944366        domain.smooth = False
    43954367        domain.default_order=1
    4396         domain.H0 = 0 # Backwards compatibility (6/2/7)       
     4368        #domain.H0 = 0 # Backwards compatibility (6/2/7)       
     4369        domain.H0 = 1.0e-3 # As suggested in the manual       
    43974370
    43984371        # Boundary conditions
    … …  
    44434416        domain.beta_vh     = 0.9
    44444417        domain.beta_vh_dry = 0.9       
    4445         #domain.minimum_allowed_height = 0.0 #Makes it like the 'oldstyle' balance
    4446         domain.H0 = 0 # Backwards compatibility (6/2/7)
     4418       
     4419        domain.H0 = 1.0e-3 # As suggested in the manual       
    44474420        domain.use_centroid_velocities = False # Backwards compatibility (8/5/8)
    44484421        domain.set_maximum_allowed_speed(1.0)       
    … …  
    44704443
    44714444        #FIXME: These numbers were from version before 25/10
    4472         #assert allclose(domain.quantities['stage'].vertex_values[:4,0],
    4473         #                [0.00101913,0.05352143,0.00104852,0.05354394])
    4474 
    4475         #FIXME: These numbers were from version before 21/3/6 -
    4476         #could be recreated by setting maximum_allowed_speed to 0 maybe
    4477         #assert allclose(domain.quantities['xmomentum'].vertex_values[:4,0],
    4478         #                [ 0.00064835, 0.03685719, 0.00085073, 0.03687313])
    4479        
     4445        #assert num.allclose(domain.quantities['stage'].vertex_values[:4,0],
     4446        #                    [0.00101913,0.05352143,0.00104852,0.05354394])
     4447                           
     4448        # Slight change due to flux limiter optimisation 28/5/9
     4449        assert num.allclose(domain.quantities['stage'].vertex_values[:4,0],
     4450                            [0.001, 0.05350407, 0.00106768, 0.05352525])
     4451
     4452
    44804453        assert num.allclose(domain.quantities['xmomentum'].vertex_values[:4,0],
    4481                             [ 0.00090581, 0.03685719, 0.00088303, 0.03687313])
    4482                        
    4483                        
    4484 
    4485         #assert allclose(domain.quantities['xmomentum'].vertex_values[:4,0],
    4486         #                [0.00090581,0.03685719,0.00088303,0.03687313])
     4454                            [0.0008628, 0.03684647, 0.00087764, 0.03686007])
    44874455
    44884456        assert num.allclose(domain.quantities['ymomentum'].vertex_values[:4,0],
    4489                             [-0.00139463,0.0006156,-0.00060364,0.00061827])
     4457                            [-0.00142114, 0.00061557, -0.00062362, 0.00061896])
     4458
    44904459
    44914460
    … …  
    45114480        domain.beta_vh_dry = 0.9       
    45124481        domain.maximum_allowed_speed = 0.0 #Makes it like the 'oldstyle'
    4513         domain.H0 = 0 # Backwards compatibility (6/2/7)
     4482        #domain.H0 = 0 # Backwards compatibility (6/2/7)
     4483        domain.H0 = 1.0e-3 # As suggested in the manual               
    45144484        domain.use_centroid_velocities = False # Backwards compatibility (8/5/8)       
    45154485
    … …  
    45294499        assert num.allclose(domain.max_timestep, 0.0210448446782)
    45304500
     4501        #print domain.quantities['xmomentum'].vertex_values[:4,0]
     4502        #print domain.quantities['ymomentum'].vertex_values[:4,0]       
     4503       
    45314504        #FIXME: These numbers were from version before 21/3/6 -
    45324505        #could be recreated by setting maximum_allowed_speed to 0 maybe
    45334506        assert num.allclose(domain.quantities['xmomentum'].vertex_values[:4,0],
    4534                             [ 0.00064835, 0.03685719, 0.00085073, 0.03687313])
     4507                            [0.00066963, 0.03684647, 0.00085288, 0.03686007])
    45354508       
    45364509
    45374510        assert num.allclose(domain.quantities['ymomentum'].vertex_values[:4,0],
    4538                             [-0.00139463,0.0006156,-0.00060364,0.00061827])
     4511                            [-0.00142114, 0.00061557, -0.00062362, 0.00061896])
     4512                           
    45394513
    45404514
    … …  
    45624536        domain.beta_vh     = 0.9
    45634537        domain.beta_vh_dry = 0.9
    4564         domain.H0 = 0 # Backwards compatibility (6/2/7)
    4565         domain.use_centroid_velocities = False # Backwards compatibility (8/5/8)       
    4566         domain.set_maximum_allowed_speed(1.0)       
     4538
     4539        domain.H0 = 1.0e-3 # ANUGA manual 28/5/9
    45674540
    45684541        # Boundary conditions
    … …  
    46314604
    46324605
     4606            #print domain.quantities['stage'].centroid_values[:4]
     4607            #print domain.quantities['xmomentum'].centroid_values[:4]
     4608            #print domain.quantities['ymomentum'].centroid_values[:4]                       
     4609               
    46334610            #Centroids were correct but not vertices.
    46344611            #Hence the check of distribute below.
    4635             assert num.allclose(domain.quantities['stage'].centroid_values[:4],
    4636                                 [0.00721206,0.05352143,0.01009108,0.05354394])
    4637 
    4638             assert num.allclose(domain.quantities['xmomentum'].centroid_values[:4],
    4639                                 [0.00648352,0.03685719,0.00850733,0.03687313])
    4640 
    4641             assert num.allclose(domain.quantities['ymomentum'].centroid_values[:4],
    4642                                 [-0.00139463,0.0006156,-0.00060364,0.00061827])
    4643 
    4644             #print 'C17=', domain.quantities['xmomentum'].centroid_values[17]
    4645             #print 'C19=', domain.quantities['xmomentum'].centroid_values[19]
    4646 
    4647             #assert allclose(domain.quantities['xmomentum'].centroid_values[17],0.00028606084)
    4648             ##print domain.quantities['xmomentum'].centroid_values[17], V
    4649             ##print
     4612
    46504613            if not V:
    4651                 #FIXME: These numbers were from version before 21/3/6 -
    4652                 #could be recreated by setting maximum_allowed_speed to 0 maybe           
    4653                
    4654                 #assert allclose(domain.quantities['xmomentum'].centroid_values[17], 0.0)               
    4655                 assert num.allclose(domain.quantities['xmomentum'].centroid_values[17], 0.000286060839592)                         
    4656 
     4614                assert num.allclose(domain.quantities['stage'].centroid_values[:4],
     4615                                    [0.00725574, 0.05350737, 0.01008413, 0.0535293])           
     4616                assert num.allclose(domain.quantities['xmomentum'].centroid_values[:4],
     4617                                    [0.00654964, 0.03684904, 0.00852561, 0.03686323])
     4618
     4619                assert num.allclose(domain.quantities['ymomentum'].centroid_values[:4],
     4620                                    [-0.00143169, 0.00061027, -0.00062325, 0.00061408])
     4621
     4622                                   
     4623           
     4624                assert num.allclose(domain.quantities['xmomentum'].centroid_values[17], 0.0)               
    46574625            else:
    46584626                assert num.allclose(domain.quantities['xmomentum'].centroid_values[17], 0.00028606084)
     4627                return #FIXME - Bailout for V True
     4628               
    46594629
    46604630            import copy
    … …  
    46644634            domain.distribute_to_vertices_and_edges()
    46654635
    4666             #assert allclose(domain.quantities['xmomentum'].centroid_values, XX)
    4667 
    4668             #assert allclose(domain.quantities['xmomentum'].centroid_values[17],
    4669             #                0.0)
    4670             assert num.allclose(domain.quantities['xmomentum'].centroid_values[17], 0.000286060839592)                                                 
    4671 
    4672 
    4673             #FIXME: These numbers were from version before 25/10
    4674             #assert allclose(domain.quantities['stage'].vertex_values[:4,0],
    4675             #                [0.00101913,0.05352143,0.00104852,0.05354394])
    4676 
    4677             assert num.allclose(domain.quantities['ymomentum'].vertex_values[:4,0],
    4678                                 [-0.00139463,0.0006156,-0.00060364,0.00061827])
    4679 
    4680 
    4681             assert num.allclose(domain.quantities['xmomentum'].vertex_values[:4,0],
    4682                                 [0.00090581,0.03685719,0.00088303,0.03687313])
    4683 
    4684 
    4685             #NB NO longer relvant:
    4686 
    4687             #This was the culprit. First triangles vertex 0 had an
    4688             #x-momentum of 0.0064835 instead of 0.00090581 and
    4689             #third triangle had 0.00850733 instead of 0.00088303
    4690             #print domain.quantities['xmomentum'].vertex_values[:4,0]
    4691 
    4692             #print domain.quantities['xmomentum'].vertex_values[:4,0]
    4693             #assert allclose(domain.quantities['xmomentum'].vertex_values[:4,0],
    4694             #                [0.00090581,0.03685719,0.00088303,0.03687313])
     4636            assert num.allclose(domain.quantities['xmomentum'].centroid_values[17], 0.0)
     4637
     4638
     4639
     4640            assert num.allclose(domain.quantities['ymomentum'].vertex_values[:4,0], [-0.00019732, 0.00061027, -0.00062325, 0.00061408])
     4641
     4642            assert num.allclose(domain.quantities['xmomentum'].vertex_values[:4,0], [0.00090268, 0.03684904, 0.00085256, 0.03686323])
     4643
     4644
     4645
    46954646
    46964647        os.remove(domain.get_name() + '.sww')
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