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from petsc4py import PETSc
import unittest
import numpy as np
class TestDMShell(unittest.TestCase):
COMM = PETSc.COMM_WORLD
def setUp(self):
self.dm = PETSc.DMShell().create(comm=self.COMM)
def tearDown(self):
self.dm.destroy()
self.dm = None
PETSc.garbage_cleanup()
def testSetGlobalVector(self):
vec = PETSc.Vec().create(comm=self.COMM)
vec.setSizes((10, None))
vec.setUp()
self.dm.setGlobalVector(vec)
gvec = self.dm.createGlobalVector()
self.assertEqual(vec.getSizes(), gvec.getSizes())
self.assertEqual(vec.comm, gvec.comm)
def testSetCreateGlobalVector(self):
def create_vec(dm):
v = PETSc.Vec().create(comm=dm.comm)
v.setSizes((10, None))
v.setUp()
return v
self.dm.setCreateGlobalVector(create_vec)
gvec = self.dm.createGlobalVector()
self.assertEqual(gvec.comm, self.dm.comm)
self.assertEqual(gvec.getLocalSize(), 10)
def testSetLocalVector(self):
vec = PETSc.Vec().create(comm=PETSc.COMM_SELF)
vec.setSizes((1 + 10 * self.COMM.rank, None))
vec.setUp()
self.dm.setLocalVector(vec)
lvec = self.dm.createLocalVector()
self.assertEqual(vec.getSizes(), lvec.getSizes())
lsize, gsize = lvec.getSizes()
self.assertEqual(lsize, gsize)
self.assertEqual(lvec.comm, PETSc.COMM_SELF)
def testSetCreateLocalVector(self):
def create_vec(dm):
v = PETSc.Vec().create(comm=PETSc.COMM_SELF)
v.setSizes((1 + 10 * dm.comm.rank, None))
v.setUp()
return v
self.dm.setCreateLocalVector(create_vec)
lvec = self.dm.createLocalVector()
lsize, gsize = lvec.getSizes()
self.assertEqual(lsize, gsize)
self.assertEqual(lsize, 1 + 10 * self.dm.comm.rank)
self.assertEqual(lvec.comm, PETSc.COMM_SELF)
def testSetMatrix(self):
mat = PETSc.Mat().create(comm=self.COMM)
mat.setSizes(((10, None), (2, None)))
mat.setUp()
mat.assemble()
self.dm.setMatrix(mat)
nmat = self.dm.createMatrix()
self.assertEqual(nmat.getSizes(), mat.getSizes())
def testSetCreateMatrix(self):
def create_mat(dm):
mat = PETSc.Mat().create(comm=self.COMM)
mat.setSizes(((10, None), (2, None)))
mat.setUp()
return mat
self.dm.setCreateMatrix(create_mat)
nmat = self.dm.createMatrix()
self.assertEqual(nmat.getSizes(), create_mat(self.dm).getSizes())
def testSetCreateFieldDecomposition(self):
def create_field_decomposition_only_is(dm):
return None, [PETSc.IS().createStride(1) for _ in range(2)], None
def create_field_decomposition_only_is_names(dm):
_, ises, _ = create_field_decomposition_only_is(dm)
names = [f'f_{i}' for i in range(len(ises))]
return names, ises, None
def create_field_decomposition_only_is_dms(dm):
_, ises, _ = create_field_decomposition_only_is(dm)
dms = [dm.clone() for _ in range(len(ises))]
return _, ises, dms
def create_field_decomposition_only_full(dm):
names, ises, _ = create_field_decomposition_only_is_names(dm)
dms = [dm.clone() for _ in range(len(ises))]
return names, ises, dms
tests = [
(create_field_decomposition_only_is, False, False),
(create_field_decomposition_only_is_names, True, False),
(create_field_decomposition_only_is_dms, False, True),
(create_field_decomposition_only_full, True, True),
]
for test_f, has_names, has_dms in tests:
self.dm.setCreateFieldDecomposition(test_f)
names, ises, dms = self.dm.createFieldDecomposition()
self.assertEqual(len(names), len(ises))
self.assertEqual(len(dms), len(ises))
if has_names:
checknames = [f'f_{i}' for i in range(len(ises))]
self.assertEqual(names, checknames)
else:
for n in names:
self.assertTrue(n is None)
for dm in dms:
if has_dms:
self.assertEqual(type(dm), PETSc.DM)
else:
self.assertTrue(dm is None)
def testGlobalToLocal(self):
def begin(dm, ivec, mode, ovec):
if mode == PETSc.InsertMode.INSERT_VALUES:
ovec[...] = ivec[...]
elif mode == PETSc.InsertMode.ADD_VALUES:
ovec[...] += ivec[...]
def end(dm, ivec, mode, ovec):
pass
vec = PETSc.Vec().create(comm=self.COMM)
vec.setSizes((10, None))
vec.setUp()
vec[...] = self.dm.comm.rank + 1
ovec = PETSc.Vec().create(comm=PETSc.COMM_SELF)
ovec.setSizes((10, None))
ovec.setUp()
self.dm.setGlobalToLocal(begin, end)
self.dm.globalToLocal(vec, ovec, addv=PETSc.InsertMode.INSERT_VALUES)
self.assertTrue(np.allclose(vec.getArray(), ovec.getArray()))
self.dm.globalToLocal(vec, ovec, addv=PETSc.InsertMode.ADD_VALUES)
self.assertTrue(np.allclose(2 * vec.getArray(), ovec.getArray()))
def testLocalToGlobal(self):
def begin(dm, ivec, mode, ovec):
if mode == PETSc.InsertMode.INSERT_VALUES:
ovec[...] = ivec[...]
elif mode == PETSc.InsertMode.ADD_VALUES:
ovec[...] += ivec[...]
def end(dm, ivec, mode, ovec):
pass
vec = PETSc.Vec().create(comm=PETSc.COMM_SELF)
vec.setSizes((10, None))
vec.setUp()
vec[...] = self.dm.comm.rank + 1
ovec = PETSc.Vec().create(comm=self.COMM)
ovec.setSizes((10, None))
ovec.setUp()
self.dm.setLocalToGlobal(begin, end)
self.dm.localToGlobal(vec, ovec, addv=PETSc.InsertMode.INSERT_VALUES)
self.assertTrue(np.allclose(vec.getArray(), ovec.getArray()))
self.dm.localToGlobal(vec, ovec, addv=PETSc.InsertMode.ADD_VALUES)
self.assertTrue(np.allclose(2 * vec.getArray(), ovec.getArray()))
def testLocalToLocal(self):
def begin(dm, ivec, mode, ovec):
if mode == PETSc.InsertMode.INSERT_VALUES:
ovec[...] = ivec[...]
elif mode == PETSc.InsertMode.ADD_VALUES:
ovec[...] += ivec[...]
def end(dm, ivec, mode, ovec):
pass
vec = PETSc.Vec().create(comm=PETSc.COMM_SELF)
vec.setSizes((10, None))
vec.setUp()
vec[...] = self.dm.comm.rank + 1
ovec = vec.duplicate()
self.dm.setLocalToLocal(begin, end)
self.dm.localToLocal(vec, ovec, addv=PETSc.InsertMode.INSERT_VALUES)
self.assertTrue(np.allclose(vec.getArray(), ovec.getArray()))
self.dm.localToLocal(vec, ovec, addv=PETSc.InsertMode.ADD_VALUES)
self.assertTrue(np.allclose(2 * vec.getArray(), ovec.getArray()))
def testGlobalToLocalVecScatter(self):
vec = PETSc.Vec().create()
vec.setSizes((10, None))
vec.setUp()
sct, ovec = PETSc.Scatter.toAll(vec)
self.dm.setGlobalToLocalVecScatter(sct)
self.dm.globalToLocal(vec, ovec, addv=PETSc.InsertMode.INSERT_VALUES)
def testLocalToGlobalVecScatter(self):
vec = PETSc.Vec().create()
vec.setSizes((10, None))
vec.setUp()
sct, ovec = PETSc.Scatter.toAll(vec)
self.dm.setLocalToGlobalVecScatter(sct)
self.dm.localToGlobal(vec, ovec, addv=PETSc.InsertMode.INSERT_VALUES)
def testLocalToLocalVecScatter(self):
vec = PETSc.Vec().create()
vec.setSizes((10, None))
vec.setUp()
sct, ovec = PETSc.Scatter.toAll(vec)
self.dm.setLocalToLocalVecScatter(sct)
self.dm.localToLocal(vec, ovec, addv=PETSc.InsertMode.INSERT_VALUES)
def testCoarsenRefine(self):
cdm = PETSc.DMShell().create(comm=self.COMM)
def coarsen(dm, comm):
return cdm
def refine(dm, comm):
return self.dm
cdm.setRefine(refine)
self.dm.setCoarsen(coarsen)
coarsened = self.dm.coarsen()
self.assertEqual(coarsened, cdm)
refined = coarsened.refine()
self.assertEqual(refined, self.dm)
def testCreateInterpolation(self):
mat = PETSc.Mat().create()
mat.setSizes(((10, None), (10, None)))
mat.setUp()
vec = PETSc.Vec().create()
vec.setSizes((10, None))
vec.setUp()
def create_interp(dm, dmf):
return mat, vec
self.dm.setCreateInterpolation(create_interp)
m, v = self.dm.createInterpolation(self.dm)
self.assertEqual(m, mat)
self.assertEqual(v, vec)
def testCreateInjection(self):
mat = PETSc.Mat().create()
mat.setSizes(((10, None), (10, None)))
mat.setUp()
def create_inject(dm, dmf):
return mat
self.dm.setCreateInjection(create_inject)
m = self.dm.createInjection(self.dm)
self.assertEqual(m, mat)
if __name__ == '__main__':
unittest.main()
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