diff options
Diffstat (limited to 'ldc_2d.py')
| -rw-r--r-- | ldc_2d.py | 43 |
1 files changed, 24 insertions, 19 deletions
@@ -1,6 +1,5 @@ import numpy import time -from string import Template import matplotlib matplotlib.use('AGG') @@ -18,47 +17,53 @@ def generate_moment_plots(lattice, moments): for i, m in enumerate(moments): print("Generating plot %d of %d." % (i+1, len(moments))) - velocity = numpy.ndarray(shape=tuple(reversed(lattice.geometry.inner_size()))) - for x, y in lattice.geometry.inner_cells(): - velocity[y-1,x-1] = numpy.sqrt(m[1,lattice.memory.gid(x,y)]**2 + m[2,lattice.memory.gid(x,y)]**2) + gid = lattice.memory.gid + velocity = numpy.reshape( + [ numpy.sqrt(m[gid(x,y)*3+1]**2 + m[gid(x,y)*3+2]**2) for x, y in lattice.geometry.inner_cells() ], + lattice.geometry.inner_size()) plt.figure(figsize=(10, 10)) plt.imshow(velocity, origin='lower', cmap=plt.get_cmap('seismic')) plt.savefig("result/ldc_2d_%02d.png" % i, bbox_inches='tight', pad_inches=0) nUpdates = 100000 -nStat = 5000 +nStat = 10000 geometry = Geometry(512, 512) print("Generating kernel using boltzgen...\n") -lbm = LBM(D2Q9) -generator = Generator( - descriptor = D2Q9, - moments = lbm.moments(), - collision = lbm.bgk(f_eq = lbm.equilibrium(), tau = 0.6)) - functions = ['collide_and_stream', 'equilibrilize', 'collect_moments', 'momenta_boundary'] extras = ['cell_list_dispatch'] precision = 'single' -kernel_src = generator.kernel('cl', precision, 'SOA', 'ZYX', geometry, functions, extras) + Template(""" -__kernel void equilibrilize(__global $float_type* f_next, - __global $float_type* f_prev) +lbm = LBM(D2Q9) +generator = Generator( + descriptor = D2Q9, + moments = lbm.moments(), + collision = lbm.bgk(f_eq = lbm.equilibrium(), tau = 0.6), + target = 'cl', + precision = precision, + index = 'ZYX', + layout = 'SOA') + +kernel_src = generator.kernel(geometry, functions, extras) +kernel_src += generator.custom(geometry, """ +__kernel void equilibrilize(__global ${float_type}* f_next, + __global ${float_type}* f_prev) { - const unsigned int gid = get_global_id(1)*$size_x + get_global_id(0); + const unsigned int gid = ${index.gid('get_global_id(0)', 'get_global_id(1)')}; equilibrilize_gid(f_next, f_prev, gid); } -__kernel void collect_moments(__global $float_type* f, - __global $float_type* moments) +__kernel void collect_moments(__global ${float_type}* f, + __global ${float_type}* moments) { - const unsigned int gid = get_global_id(1)*$size_x + get_global_id(0); + const unsigned int gid = ${index.gid('get_global_id(0)', 'get_global_id(1)')}; collect_moments_gid(f, moments, gid); } -""").substitute(float_type = 'float', size_x = geometry.size_x) +""") print("Initializing simulation...\n") |