diff options
Diffstat (limited to 'lid_driven_cavity/opencl')
| -rw-r--r-- | lid_driven_cavity/opencl/AA.py | 28 | ||||
| -rw-r--r-- | lid_driven_cavity/opencl/AB.py | 34 | ||||
| -rw-r--r-- | lid_driven_cavity/opencl/ldc_2d.py | 42 |
3 files changed, 37 insertions, 67 deletions
diff --git a/lid_driven_cavity/opencl/AA.py b/lid_driven_cavity/opencl/AA.py index 74979c5..7ea3417 100644 --- a/lid_driven_cavity/opencl/AA.py +++ b/lid_driven_cavity/opencl/AA.py @@ -24,7 +24,7 @@ class Memory: return z * (self.size_x*self.size_y) + y * self.size_x + x; class Lattice: - def __init__(self, geometry, kernel_src, descriptor, platform = 0, precision = 'single'): + def __init__(self, geometry, kernel_src, descriptor, context, queue, precision = 'single'): self.geometry = geometry self.descriptor = descriptor @@ -33,13 +33,10 @@ class Lattice: 'double': (numpy.float64, 'double'), }.get(precision, None) - self.platform = cl.get_platforms()[platform] self.layout = None - self.context = cl.Context( - properties=[(cl.context_properties.PLATFORM, self.platform)]) - - self.queue = cl.CommandQueue(self.context) + self.context = context + self.queue = queue self.memory = Memory(descriptor, self.geometry, self.context, self.float_type[0]) self.tick = False @@ -51,7 +48,7 @@ class Lattice: self.build_kernel(kernel_src) - self.program.equilibrilize_all( + self.program.equilibrilize_domain_tick( self.queue, self.geometry.size(), self.layout, self.memory.cl_pop).wait() self.tick_tasks = [] @@ -82,24 +79,9 @@ class Lattice: def get_moments(self): moments = numpy.ndarray(shape=(self.memory.volume*(self.descriptor.d+1),1), dtype=self.float_type[0]) - self.program.collect_moments_all( + self.program.collect_moments_domain_tock( self.queue, self.geometry.inner_size(), self.layout, self.memory.cl_pop, self.memory.cl_moments) cl.enqueue_copy(self.queue, moments, self.memory.cl_moments).wait(); return moments - -HelperTemplate = """ -__kernel void equilibrilize_all(__global ${float_type}* f_next) -{ - const unsigned int gid = ${index.gid('get_global_id(0)', 'get_global_id(1)')}; - equilibrilize_tick(f_next, gid); -} - -__kernel void collect_moments_all(__global ${float_type}* f, - __global ${float_type}* moments) -{ - const unsigned int gid = ${index.gid('get_global_id(0)+1', 'get_global_id(1)+1')}; - collect_moments_tock(f, gid, moments); -} -""" diff --git a/lid_driven_cavity/opencl/AB.py b/lid_driven_cavity/opencl/AB.py index 7cbf1c6..797bc83 100644 --- a/lid_driven_cavity/opencl/AB.py +++ b/lid_driven_cavity/opencl/AB.py @@ -25,7 +25,7 @@ class Memory: return z * (self.size_x*self.size_y) + y * self.size_x + x; class Lattice: - def __init__(self, geometry, kernel_src, descriptor, platform = 0, precision = 'single'): + def __init__(self, geometry, kernel_src, descriptor, context, queue, precision = 'single'): self.geometry = geometry self.descriptor = descriptor @@ -34,13 +34,10 @@ class Lattice: 'double': (numpy.float64, 'double'), }.get(precision, None) - self.platform = cl.get_platforms()[platform] self.layout = None - self.context = cl.Context( - properties=[(cl.context_properties.PLATFORM, self.platform)]) - - self.queue = cl.CommandQueue(self.context) + self.context = context + self.queue = queue self.memory = Memory(descriptor, self.geometry, self.context, self.float_type[0]) self.tick = False @@ -52,8 +49,10 @@ class Lattice: self.build_kernel(kernel_src) - self.program.equilibrilize_all( + self.program.equilibrilize_domain( self.queue, self.geometry.size(), self.layout, self.memory.cl_pop_a, self.memory.cl_pop_b).wait() + self.program.equilibrilize_domain( + self.queue, self.geometry.size(), self.layout, self.memory.cl_pop_b, self.memory.cl_pop_a).wait() self.tasks = [] @@ -80,29 +79,12 @@ class Lattice: moments = numpy.ndarray(shape=(self.memory.volume*(self.descriptor.d+1),1), dtype=self.float_type[0]) if self.tick: - self.program.collect_moments_all( + self.program.collect_moments_domain( self.queue, self.geometry.size(), self.layout, self.memory.cl_pop_b, self.memory.cl_moments) else: - self.program.collect_moments_all( + self.program.collect_moments_domain( self.queue, self.geometry.size(), self.layout, self.memory.cl_pop_a, self.memory.cl_moments) cl.enqueue_copy(self.queue, moments, self.memory.cl_moments).wait(); return moments - -HelperTemplate = """ -__kernel void equilibrilize_all(__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(f_next, f_prev, gid); - equilibrilize(f_prev, f_next, gid); -} - -__kernel void collect_moments_all(__global ${float_type}* f, - __global ${float_type}* moments) -{ - const unsigned int gid = ${index.gid('get_global_id(0)', 'get_global_id(1)')}; - collect_moments(f, gid, moments); -} -""" diff --git a/lid_driven_cavity/opencl/ldc_2d.py b/lid_driven_cavity/opencl/ldc_2d.py index 7380aa9..1ea80aa 100644 --- a/lid_driven_cavity/opencl/ldc_2d.py +++ b/lid_driven_cavity/opencl/ldc_2d.py @@ -1,16 +1,18 @@ import numpy import time +import pyopencl as cl + from boltzgen import Generator, Geometry from boltzgen.lbm.lattice import D2Q9 from boltzgen.lbm.model import BGK from common import CellList, generate_moment_plots -nUpdates = 100000 -nStat = 10000 +nUpdates = 20000 +nStat = 1000 -geometry = Geometry(256, 256) +geometry = Geometry(512, 512) print("Generating kernel using boltzgen...\n") @@ -24,7 +26,6 @@ import AA import AB Lattice = eval('%s.Lattice' % streaming) -HelperTemplate = eval('%s.HelperTemplate' % streaming) def MLUPS(cells, steps, time): return cells * steps / time * 1e-6 @@ -37,12 +38,17 @@ generator = Generator( index = 'ZYX', layout = 'SOA') -kernel_src = generator.kernel(geometry, functions, extras) -kernel_src += generator.custom(geometry, HelperTemplate) +kernel_src = generator.kernel(geometry, functions, extras) + +print("Constructing OpenCL context...\n") + +cl_platform = cl.get_platforms()[0] +cl_context = cl.Context(properties=[(cl.context_properties.PLATFORM, cl_platform)]) +cl_queue = cl.CommandQueue(cl_context) print("Initializing simulation...\n") -lattice = Lattice(geometry, kernel_src, D2Q9, precision = precision) +lattice = Lattice(geometry, kernel_src, D2Q9, cl_context, cl_queue, precision = precision) gid = lattice.memory.gid ghost_cells = CellList(lattice.context, lattice.queue, lattice.float_type, @@ -55,19 +61,19 @@ 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 ]) if streaming == 'AB': - 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])) + lattice.schedule('collide_and_stream', bulk_cells) + lattice.schedule('velocity_momenta_boundary', wall_cells, numpy.array([0.0, 0.0], dtype=lattice.float_type[0])) + lattice.schedule('velocity_momenta_boundary', lid_cells, numpy.array([0.1, 0.0], dtype=lattice.float_type[0])) elif streaming == 'AA': - lattice.schedule_tick('collide_and_stream_cells_tick', bulk_cells) - lattice.schedule_tick('velocity_momenta_boundary_cells_tick', wall_cells, numpy.array([0.0, 0.0], dtype=lattice.float_type[0])) - lattice.schedule_tick('velocity_momenta_boundary_cells_tick', lid_cells, numpy.array([0.1, 0.0], dtype=lattice.float_type[0])) - - lattice.schedule_tock('equilibrilize_cells_tick', ghost_cells) - lattice.schedule_tock('collide_and_stream_cells_tock', bulk_cells) - lattice.schedule_tock('velocity_momenta_boundary_cells_tock', wall_cells, numpy.array([0.0, 0.0], dtype=lattice.float_type[0])) - lattice.schedule_tock('velocity_momenta_boundary_cells_tock', lid_cells, numpy.array([0.1, 0.0], dtype=lattice.float_type[0])) + lattice.schedule_tick('collide_and_stream_tick', bulk_cells) + lattice.schedule_tick('velocity_momenta_boundary_tick', wall_cells, numpy.array([0.0, 0.0], dtype=lattice.float_type[0])) + lattice.schedule_tick('velocity_momenta_boundary_tick', lid_cells, numpy.array([0.1, 0.0], dtype=lattice.float_type[0])) + + lattice.schedule_tock('equilibrilize_tick', ghost_cells) + lattice.schedule_tock('collide_and_stream_tock', bulk_cells) + lattice.schedule_tock('velocity_momenta_boundary_tock', wall_cells, numpy.array([0.0, 0.0], dtype=lattice.float_type[0])) + lattice.schedule_tock('velocity_momenta_boundary_tock', lid_cells, numpy.array([0.1, 0.0], dtype=lattice.float_type[0])) print("Starting simulation using %d cells...\n" % lattice.geometry.volume) |