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from mpi4py import MPI
import dolfinx
import ipyparallel as ipp
import numpy as np
import numpy.typing
import pytest
import adios4dolfinx
@pytest.fixture(scope="module")
def cluster():
cluster = ipp.Cluster(engines="mpi", n=2)
rc = cluster.start_and_connect_sync()
yield rc
cluster.stop_cluster_sync()
@pytest.fixture(scope="function")
def write_function(tmp_path):
def _write_function(mesh, el, f, dtype, name="uh", append: bool = False) -> str:
V = dolfinx.fem.functionspace(mesh, el)
uh = dolfinx.fem.Function(V, dtype=dtype)
uh.interpolate(f)
uh.name = name
el_hash = (
adios4dolfinx.utils.element_signature(V)
.replace(" ", "")
.replace(",", "")
.replace("(", "")
.replace(")", "")
.replace("[", "")
.replace("]", "")
)
# Consistent tmp dir across processes
f_path = MPI.COMM_WORLD.bcast(tmp_path, root=0)
file_hash = f"{el_hash}_{np.dtype(dtype).name}"
filename = f_path / f"mesh_{file_hash}.bp"
if mesh.comm.size != 1:
if not append:
adios4dolfinx.write_mesh(filename, mesh)
adios4dolfinx.write_function(filename, uh, time=0.0)
else:
if MPI.COMM_WORLD.rank == 0:
if not append:
adios4dolfinx.write_mesh(filename, mesh)
adios4dolfinx.write_function(filename, uh, time=0.0)
return filename
return _write_function
@pytest.fixture(scope="function")
def read_function():
def _read_function(comm, el, f, path, dtype, name="uh"):
engine = "BP4"
mesh = adios4dolfinx.read_mesh(path, comm, engine, dolfinx.mesh.GhostMode.shared_facet)
V = dolfinx.fem.functionspace(mesh, el)
v = dolfinx.fem.Function(V, dtype=dtype)
v.name = name
adios4dolfinx.read_function(path, v, engine)
v_ex = dolfinx.fem.Function(V, dtype=dtype)
v_ex.interpolate(f)
res = np.finfo(dtype).resolution
np.testing.assert_allclose(v.x.array, v_ex.x.array, atol=10 * res, rtol=10 * res)
return _read_function
@pytest.fixture(scope="function")
def get_dtype():
def _get_dtype(in_dtype: np.dtype, is_complex: bool):
dtype: numpy.typing.DTypeLike
if in_dtype == np.float32:
if is_complex:
dtype = np.complex64
else:
dtype = np.float32
elif in_dtype == np.float64:
if is_complex:
dtype = np.complex128
else:
dtype = np.float64
else:
raise ValueError("Unsuported dtype")
return dtype
return _get_dtype
@pytest.fixture(scope="function")
def write_function_time_dep(tmp_path):
def _write_function_time_dep(mesh, el, f0, f1, t0, t1, dtype) -> str:
V = dolfinx.fem.functionspace(mesh, el)
uh = dolfinx.fem.Function(V, dtype=dtype)
uh.interpolate(f0)
el_hash = (
adios4dolfinx.utils.element_signature(V)
.replace(" ", "")
.replace(",", "")
.replace("(", "")
.replace(")", "")
.replace("[", "")
.replace("]", "")
)
file_hash = f"{el_hash}_{np.dtype(dtype).name}"
# Consistent tmp dir across processes
f_path = MPI.COMM_WORLD.bcast(tmp_path, root=0)
filename = f_path / f"mesh_{file_hash}.bp"
if mesh.comm.size != 1:
adios4dolfinx.write_mesh(filename, mesh)
adios4dolfinx.write_function(filename, uh, time=t0)
uh.interpolate(f1)
adios4dolfinx.write_function(filename, uh, time=t1)
else:
if MPI.COMM_WORLD.rank == 0:
adios4dolfinx.write_mesh(filename, mesh)
adios4dolfinx.write_function(filename, uh, time=t0)
uh.interpolate(f1)
adios4dolfinx.write_function(filename, uh, time=t1)
return filename
return _write_function_time_dep
@pytest.fixture(scope="function")
def read_function_time_dep():
def _read_function_time_dep(comm, el, f0, f1, t0, t1, path, dtype):
engine = "BP4"
mesh = adios4dolfinx.read_mesh(path, comm, engine, dolfinx.mesh.GhostMode.shared_facet)
V = dolfinx.fem.functionspace(mesh, el)
v = dolfinx.fem.Function(V, dtype=dtype)
adios4dolfinx.read_function(path, v, engine, time=t1)
v_ex = dolfinx.fem.Function(V, dtype=dtype)
v_ex.interpolate(f1)
res = np.finfo(dtype).resolution
assert np.allclose(v.x.array, v_ex.x.array, atol=10 * res, rtol=10 * res)
adios4dolfinx.read_function(path, v, engine, time=t0)
v_ex = dolfinx.fem.Function(V, dtype=dtype)
v_ex.interpolate(f0)
res = np.finfo(dtype).resolution
assert np.allclose(v.x.array, v_ex.x.array, atol=10 * res, rtol=10 * res)
return _read_function_time_dep
|
