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#!/usr/bin/env python
import argparse
from boltzgen import LBM, Generator, Geometry
from boltzgen.lbm.model import D2Q9
argparser = argparse.ArgumentParser(
description = 'Generate a C++ implementation of a lid driven cavity simulation using LBM')
argparser.add_argument(
'--output', required = False, help = 'Target directory for the generated sources')
args = argparser.parse_args()
geometry = Geometry(128, 128)
functions = ['collide_and_stream', 'equilibrilize', 'collect_moments', 'momenta_boundary']
lbm = LBM(D2Q9)
generator = Generator(
descriptor = D2Q9,
moments = lbm.moments(),
collision = lbm.bgk(f_eq = lbm.equilibrium(), tau = 0.52),
target = 'cpp',
precision = 'double',
index = 'XYZ',
layout = 'AOS')
if args.output is None:
args.output = '.'
with open('%s/kernel.h' % args.output, 'w') as kernel:
kernel.write(generator.kernel(geometry, functions))
ldc_src = ''
with open('ldc.cpp.mako', 'r') as template:
ldc_src = template.read()
with open('%s/ldc.cpp' % args.output, 'w') as app:
app.write(generator.custom(geometry, ldc_src))
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