From 6bf667eeb0c8f40e0f6a28df1ecf4a40824771c3 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Tue, 29 Oct 2019 20:46:21 +0100
Subject: Move example into subfolder

---
 ldc_2d.py | 101 --------------------------------------------------------------
 1 file changed, 101 deletions(-)
 delete mode 100644 ldc_2d.py

(limited to 'ldc_2d.py')

diff --git a/ldc_2d.py b/ldc_2d.py
deleted file mode 100644
index 7ca7252..0000000
--- a/ldc_2d.py
+++ /dev/null
@@ -1,101 +0,0 @@
-import numpy
-import time
-
-import matplotlib
-matplotlib.use('AGG')
-import matplotlib.pyplot as plt
-
-from boltzgen import LBM, Generator, Geometry
-from boltzgen.lbm.model import D2Q9
-
-from simulation import Lattice, CellList
-
-def MLUPS(cells, steps, time):
-    return cells * steps / time * 1e-6
-
-def generate_moment_plots(lattice, moments):
-    for i, m in enumerate(moments):
-        print("Generating plot %d of %d." % (i+1, len(moments)))
-
-        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    = 10000
-
-geometry = Geometry(512, 512)
-
-print("Generating kernel using boltzgen...\n")
-
-functions = ['collide_and_stream', 'equilibrilize', 'collect_moments', 'momenta_boundary']
-extras    = ['cell_list_dispatch']
-
-precision = 'single'
-
-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 = ${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)
-{
-    const unsigned int gid = ${index.gid('get_global_id(0)', 'get_global_id(1)')};
-    collect_moments_gid(f, moments, gid);
-}
-""")
-
-print("Initializing simulation...\n")
-
-lattice = Lattice(geometry, kernel_src, D2Q9, precision = precision)
-gid = lattice.memory.gid
-
-bulk_cells = CellList(lattice.context, lattice.queue, lattice.float_type,
-    [ gid(x,y) for x, y in geometry.inner_cells() if x > 1 and x < geometry.size_x-2 and y > 1 and y < geometry.size_y-2 ])
-wall_cells = CellList(lattice.context, lattice.queue, lattice.float_type,
-    [ gid(x,y) for x, y in geometry.inner_cells() if x == 1 or y == 1 or x == geometry.size_x-2 ])
-lid_cells = CellList(lattice.context, lattice.queue, lattice.float_type,
-    [ gid(x,y) for x, y in geometry.inner_cells() if y == geometry.size_y-2 ])
-
-lattice.schedule('collide_and_stream_cells', bulk_cells)
-lattice.schedule('velocity_momenta_boundary_cells', wall_cells, numpy.array([0.0, 0.0], dtype=lattice.float_type[0]))
-lattice.schedule('velocity_momenta_boundary_cells', lid_cells,  numpy.array([0.1, 0.0], dtype=lattice.float_type[0]))
-
-print("Starting simulation using %d cells...\n" % lattice.geometry.volume)
-
-moments = []
-
-lastStat = time.time()
-
-for i in range(1,nUpdates+1):
-    lattice.evolve()
-
-    if i % nStat == 0:
-        lattice.sync()
-        print("i = %4d; %3.0f MLUPS" % (i, MLUPS(lattice.geometry.volume, nStat, time.time() - lastStat)))
-        moments.append(lattice.get_moments())
-        lastStat = time.time()
-
-print("\nConcluded simulation.\n")
-
-generate_moment_plots(lattice, moments)
-- 
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