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time dedup call #2

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time dedup call #2

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dc4ddc9
CHERRY-PICK: Attach discretization entity tags
kaushikcfd Apr 4, 2022
563f30d
CHERRY-PICK: SingleGridPytatoArrayContext
kaushikcfd Mar 12, 2022
4c7889c
Adds more pytato utils: Axes types unification
kaushikcfd Mar 12, 2022
d213ff6
Implements FusionContractorArrayContext
kaushikcfd Mar 12, 2022
1467d5a
adds feinsum, kanren to deps
kaushikcfd Mar 12, 2022
23200ad
time dedup call
matthiasdiener Apr 22, 2022
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30 changes: 13 additions & 17 deletions examples/simple-dg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@
from meshmode.mesh import BTAG_ALL, BTAG_NONE # noqa
from meshmode.dof_array import DOFArray, flat_norm
from meshmode.array_context import (PyOpenCLArrayContext,
PytatoPyOpenCLArrayContext)
SingleGridWorkBalancingPytatoArrayContext as PytatoPyOpenCLArrayContext)
from arraycontext import (
freeze, thaw,
ArrayContainer,
Expand Down Expand Up @@ -456,11 +456,10 @@ def main(lazy=False):

cl_ctx = cl.create_some_context()
queue = cl.CommandQueue(cl_ctx)
actx_outer = PyOpenCLArrayContext(queue, force_device_scalars=True)
if lazy:
actx_rhs = PytatoPyOpenCLArrayContext(queue)
actx = PytatoPyOpenCLArrayContext(queue)
else:
actx_rhs = actx_outer
actx = PyOpenCLArrayContext(queue, force_device_scalars=True)

nel_1d = 16
from meshmode.mesh.generation import generate_regular_rect_mesh
Expand All @@ -476,45 +475,42 @@ def main(lazy=False):

logger.info("%d elements", mesh.nelements)

discr = DGDiscretization(actx_outer, mesh, order=order)
discr = DGDiscretization(actx, mesh, order=order)

fields = WaveState(
u=bump(actx_outer, discr),
v=make_obj_array([discr.zeros(actx_outer) for i in range(discr.dim)]),
u=bump(actx, discr),
v=make_obj_array([discr.zeros(actx) for i in range(discr.dim)]),
)

from meshmode.discretization.visualization import make_visualizer
vis = make_visualizer(actx_outer, discr.volume_discr)
vis = make_visualizer(actx, discr.volume_discr)

def rhs(t, q):
return wave_operator(actx_rhs, discr, c=1, q=q)
return wave_operator(actx, discr, c=1, q=q)

compiled_rhs = actx_rhs.compile(rhs)

def rhs_wrapper(t, q):
r = compiled_rhs(t, thaw(freeze(q, actx_outer), actx_rhs))
return thaw(freeze(r, actx_rhs), actx_outer)
compiled_rhs = actx.compile(rhs)

t = np.float64(0)
t_final = 3
istep = 0
while t < t_final:
fields = rk4_step(fields, t, dt, rhs_wrapper)
fields = thaw(freeze(fields, actx), actx)
fields = rk4_step(fields, t, dt, compiled_rhs)

if istep % 10 == 0:
# FIXME: Maybe an integral function to go with the
# DOFArray would be nice?
assert len(fields.u) == 1
logger.info("[%05d] t %.5e / %.5e norm %.5e",
istep, t, t_final, actx_outer.to_numpy(flat_norm(fields.u, 2)))
istep, t, t_final, actx.to_numpy(flat_norm(fields.u, 2)))
vis.write_vtk_file("fld-wave-min-%04d.vtu" % istep, [
("q", fields),
])

t += dt
istep += 1

assert flat_norm(fields.u, 2) < 100
assert actx.to_numpy(flat_norm(fields.u, 2)) < 100


if __name__ == "__main__":
Expand Down
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