def test_obtain_guesses_by_inspection(self):
from adcc.workflow import obtain_guesses_by_inspection
refstate = cache.refstate["h2o_sto3g"]
ground_state = adcc.LazyMp(refstate)
matrix2 = adcc.AdcMatrix("adc2", ground_state)
matrix1 = adcc.AdcMatrix("adc1", ground_state)
# Test that the right number of guesses is returned ...
for mat in [matrix1, matrix2]:
for i in range(4, 9):
res = obtain_guesses_by_inspection(mat,
n_guesses=i,
kind="singlet")
assert len(res) == i
for i in range(4, 9):
res = obtain_guesses_by_inspection(matrix2,
n_guesses=i,
kind="triplet",
n_guesses_doubles=2)
assert len(res) == i
with pytest.raises(InputError):
obtain_guesses_by_inspection(matrix1,
n_guesses=4,
kind="any",
n_guesses_doubles=2)
with pytest.raises(InputError):
obtain_guesses_by_inspection(matrix1, n_guesses=40, kind="any")
def dump_matrix(basis, method):
key = basis.replace("*", "s").replace("-", "").lower()
fn = "water_" + key + "_" + method + ".hdf5"
if os.path.isfile(fn):
with h5py.File(fn, "r") as fp:
return np.asarray(fp["adc_matrix"])
mol = gto.M(atom="""O 0 0 0
H 0 0 1.795239827225189
H 1.693194615993441 0 -0.599043184453037""",
basis=basis,
unit="Bohr")
scfres = scf.RHF(mol)
scfres.conv_tol = 1e-13
scfres.kernel()
mat = adcc.AdcMatrix(method, adcc.ReferenceState(scfres))
key = basis.replace("*", "s").replace("-", "").lower()
mat = mat.to_dense_matrix()
fn = "water_" + key + "_" + method + ".hdf5"
if not os.path.isfile(fn):
with h5py.File(fn, "w") as fp:
fp.create_dataset("adc_matrix", data=mat, compression="gzip")
with h5py.File(fn, "r") as fp:
return np.asarray(fp["adc_matrix"])
def test_intermediates_adc2(self):
ground_state = adcc.LazyMp(cache.refstate["h2o_sto3g"])
matrix = adcc.AdcMatrix("adc2", ground_state)
assert isinstance(matrix.intermediates, Intermediates)
intermediates = Intermediates(ground_state)
matrix.intermediates = intermediates
assert matrix.intermediates == intermediates
def test_adc2_shift_invert_triplets(self):
refdata = cache.reference_data["h2o_sto3g"]
matrix = adcc.AdcMatrix("adc2", LazyMp(cache.refstate["h2o_sto3g"]))
conv_tol = 1e-5
shift = -0.5
# Construct shift and inverted matrix:
shinv = IterativeInverse(AdcMatrixShifted(matrix, shift),
conv_tol=conv_tol / 10,
Pinv=JacobiPreconditioner,
callback=cg_print)
# Solve for triplets
guesses = adcc.guesses_triplet(matrix, n_guesses=5, block="ph")
symm = IndexSpinSymmetrisation(matrix, enforce_spin_kind="triplet")
res = lanczos(shinv,
guesses,
n_ep=5,
callback=la_print,
explicit_symmetrisation=symm)
assert res.converged
# Undo spectral transformation and compare
eigenvalues = sorted(1 / res.eigenvalues - shift)
ref_triplets = refdata["adc2"]["triplet"]["eigenvalues"][:5]
assert eigenvalues == approx(ref_triplets)
class TestAdcMatrixInterface(unittest.TestCase):
def test_properties_adc2(self):
case = "h2o_sto3g"
method = "adc2"
reference_state = cache.refstate[case]
ground_state = adcc.LazyMp(reference_state)
matrix = adcc.AdcMatrix(method, ground_state)
assert matrix.ndim == 2
assert not matrix.is_core_valence_separated
assert matrix.shape == (1640, 1640)
assert len(matrix) == 1640
assert matrix.axis_blocks == ["ph", "pphh"]
assert sorted(matrix.axis_spaces.keys()) == matrix.axis_blocks
assert sorted(matrix.axis_lengths.keys()) == matrix.axis_blocks
assert matrix.axis_spaces["ph"] == ["o1", "v1"]
assert matrix.axis_spaces["pphh"] == ["o1", "o1", "v1", "v1"]
assert matrix.axis_lengths["ph"] == 40
assert matrix.axis_lengths["pphh"] == 1600
assert matrix.reference_state == reference_state
assert matrix.mospaces == reference_state.mospaces
assert isinstance(matrix.timer, adcc.timings.Timer)
class TestAdcMatrixShifted(unittest.TestCase):
def construct_matrices(self, case, shift):
reference_state = cache.refstate[case]
ground_state = adcc.LazyMp(reference_state)
matrix = adcc.AdcMatrix("adc3", ground_state)
shifted = AdcMatrixShifted(matrix, shift)
return matrix, shifted
class TestAdcMatrixInterface(unittest.TestCase):
def test_properties_adc2(self):
case = "h2o_sto3g"
method = "adc2"
reference_state = cache.refstate[case]
ground_state = adcc.LazyMp(reference_state)
matrix = adcc.AdcMatrix(method, ground_state)
assert matrix.ndim == 2
assert not matrix.is_core_valence_separated
assert matrix.shape == (1640, 1640)
assert len(matrix) == 1640
assert matrix.blocks == ["s", "d"]
assert matrix.has_block("s")
assert matrix.has_block("d")
assert not matrix.has_block("t")
assert matrix.block_spaces("s") == ["o1", "v1"]
assert matrix.block_spaces("d") == ["o1", "o1", "v1", "v1"]
assert matrix.reference_state == reference_state
assert matrix.mospaces == reference_state.mospaces
assert isinstance(matrix.timer, adcc.timings.Timer)
assert isinstance(matrix.to_cpp(), libadcc.AdcMatrix)
def template_pcm_linear_response_formaldehyde(self, basis, method, backend):
if method != "adc1":
pytest.skip("Reference only exists for adc1.")
c = config[backend]
basename = f"formaldehyde_{basis}_pcm_{method}"
result = c["data"][basename]
run_hf = c["run_hf"]
scfres = run_hf(static_data.xyz["formaldehyde"], basis, charge=0,
multiplicity=1, conv_tol=1e-12, conv_tol_grad=1e-11,
max_iter=150, pcm_options=c["pcm_options"])
assert_allclose(scfres.energy_scf, result["energy_scf"], atol=1e-8)
matrix = adcc.AdcMatrix(method, scfres)
solvent = AdcExtraTerm(matrix, {'ph_ph': block_ph_ph_0_pcm})
matrix += solvent
assert len(matrix.extra_terms)
state = adcc.run_adc(matrix, n_singlets=5, conv_tol=1e-7,
environment=False)
assert_allclose(
state.excitation_energy_uncorrected,
result["lr_excitation_energy"],
atol=1e-5
)
state_cis = adcc.ExcitedStates(state, property_method="adc0")
assert_allclose(
state_cis.oscillator_strength,
result["lr_osc_strength"], atol=1e-3
)
# invalid combination
with pytest.raises(InputError):
adcc.run_adc(scfres, method=method, n_singlets=5,
environment={"linear_response": True, "ptlr": True})
# no environment specified
with pytest.raises(InputError):
adcc.run_adc(scfres, method=method, n_singlets=5)
# automatically add coupling term
state = adcc.run_adc(scfres, method=method, n_singlets=5,
conv_tol=1e-7, environment="linear_response")
assert_allclose(
state.excitation_energy_uncorrected,
result["lr_excitation_energy"],
atol=1e-5
)
if backend == "psi4":
# remove cavity files from PSI4 PCM calculations
remove_cavity_psi4()
def test_adc2_triplets(self):
refdata = cache.reference_data["h2o_sto3g"]
matrix = adcc.AdcMatrix("adc2", LazyMp(cache.refstate["h2o_sto3g"]))
# Solve for triplets
guesses = adcc.guesses_triplet(matrix, n_guesses=6, block="ph")
res = lanczos(matrix, guesses, n_ep=6, which="SM")
ref_triplets = refdata["adc2"]["triplet"]["eigenvalues"][:6]
assert res.converged
assert res.eigenvalues == approx(ref_triplets)
def test_adc2_triplets(self):
refdata = cache.reference_data["h2o_sto3g"]
matrix = adcc.AdcMatrix("adc2", LazyMp(cache.refstate["h2o_sto3g"]))
# Solve for triplets
guesses = adcc.guesses_triplet(matrix, n_guesses=10, block="s")
res = jacobi_davidson(matrix, guesses, n_ep=10)
ref_triplets = refdata["adc2"]["triplet"]["eigenvalues"]
assert res.converged
assert res.eigenvalues == approx(ref_triplets)
class TestAdcMatrix(unittest.TestCase):
def construct_matrix(self, case, method):
refdata = cache.reference_data[case]
matdata = refdata[method]["matrix"]
if "cvs" in method:
refstate = cache.refstate_cvs[case]
else:
refstate = cache.refstate[case]
matrix = adcc.AdcMatrix(method, refstate)
return matrix, matdata
def template_pe_linear_response_formaldehyde(self, basis, method, backend):
if method != "adc2":
pytest.skip("Reference only exists for adc2.")
basename = f"formaldehyde_{basis}_pe_{method}"
tm_result = tmole_data[basename]
pe_options = {"potfile": pe_potentials["fa_6w"]}
scfres = cached_backend_hf(backend,
"formaldehyde",
basis,
pe_options=pe_options)
assert_allclose(scfres.energy_scf, tm_result["energy_scf"], atol=1e-8)
matrix = adcc.AdcMatrix(method, scfres)
solvent = AdcExtraTerm(matrix, {'ph_ph': block_ph_ph_0_pe})
# manually add the coupling term
matrix += solvent
assert len(matrix.extra_terms)
assert_allclose(matrix.ground_state.energy(2),
tm_result["energy_mp2"],
atol=1e-8)
state = adcc.run_adc(matrix,
n_singlets=5,
conv_tol=1e-7,
environment=False)
assert_allclose(state.excitation_energy_uncorrected,
tm_result["excitation_energy"],
atol=1e-6)
# invalid combination
with pytest.raises(InputError):
adcc.run_adc(scfres,
method=method,
n_singlets=5,
environment={
"linear_response": True,
"ptlr": True
})
# no scheme specified
with pytest.raises(InputError):
adcc.run_adc(scfres, method=method, n_singlets=5)
# automatically add coupling term
state = adcc.run_adc(scfres,
method=method,
n_singlets=5,
conv_tol=1e-7,
environment="linear_response")
assert_allclose(state.excitation_energy_uncorrected,
tm_result["excitation_energy"],
atol=1e-6)
def test_estimate_n_guesses(self):
from adcc.workflow import estimate_n_guesses
refstate = cache.refstate["h2o_sto3g"]
ground_state = adcc.LazyMp(refstate)
matrix = adcc.AdcMatrix("adc2", ground_state)
# Check minimal number of guesses is 4 and at some point
# we get more than four guesses
assert 4 == estimate_n_guesses(matrix, n_states=1, singles_only=True)
assert 4 == estimate_n_guesses(matrix, n_states=2, singles_only=True)
for i in range(3, 20):
assert i <= estimate_n_guesses(
matrix, n_states=i, singles_only=True)
def test_adc1_linear_solve(self):
conv_tol = 1e-9
matrix = adcc.AdcMatrix("adc1", cache.refstate["h2o_sto3g"])
rhs = adcc.guess_zero(matrix)
rhs["s"].set_random()
guess = rhs.copy()
guess["s"].set_random()
res = conjugate_gradient(matrix,
rhs,
guess,
callback=cgprint,
conv_tol=conv_tol)
residual = matrix @ res.solution - rhs
assert np.sqrt(residual @ residual) < conv_tol
def test_functionality(self):
ground_state = adcc.LazyMp(cache.refstate["h2o_sto3g"])
matrix = adcc.AdcMatrix("adc2", ground_state)
vectors = [adcc.guess_zero(matrix) for i in range(2)]
for vec in vectors:
vec.set_random()
v, w = vectors
with pytest.raises(AttributeError):
v.pph
with pytest.raises(AttributeError):
v.pph = w.ph
# setattr with expression
z = adcc.zeros_like(v)
z.ph = v.ph + w.ph
z -= w
np.testing.assert_allclose(v.ph.to_ndarray(), z.ph.to_ndarray())
def template_singles_view(self, method):
if "cvs" in method:
reference_state = cache.refstate_cvs["h2o_sto3g"]
shape = (8, 8)
spaces_s = ["o2", "v1"]
else:
reference_state = cache.refstate["h2o_sto3g"]
shape = (40, 40)
spaces_s = ["o1", "v1"]
matrix = adcc.AdcMatrix(method, adcc.LazyMp(reference_state))
view = adcc.AdcBlockView(matrix, "s")
assert view.ndim == 2
assert view.is_core_valence_separated == ("cvs" in method)
assert view.shape == shape
assert len(view) == shape[0]
assert view.blocks == ["s"]
assert view.has_block("s")
assert not view.has_block("d")
assert not view.has_block("t")
assert view.block_spaces("s") == spaces_s
assert view.reference_state == reference_state
assert view.mospaces == reference_state.mospaces
assert isinstance(view.timer, adcc.timings.Timer)
assert view.to_cpp() == matrix.to_cpp()
# Check diagonal
diff = matrix.diagonal("s") - view.diagonal("s")
assert diff.dot(diff) < 1e-12
# Check @ (one vector and multiple vectors)
invec = adcc.guess_zero(matrix)
invec["s"].set_random()
# "d" left as zero
invec_singles = adcc.AmplitudeVector(invec["s"])
ref = matrix @ invec
res = view @ invec_singles
diff = res["s"] - ref["s"]
assert diff.dot(diff) < 1e-12
res = view @ [invec_singles, invec_singles, invec_singles]
diff = [res[i]["s"] - ref["s"] for i in range(3)]
assert max(d.dot(d) for d in diff) < 1e-12
def template_singles_view(self, method):
if "cvs" in method:
reference_state = cache.refstate_cvs["h2o_sto3g"]
shape = (8, 8)
spaces_ph = ["o2", "v1"]
else:
reference_state = cache.refstate["h2o_sto3g"]
shape = (40, 40)
spaces_ph = ["o1", "v1"]
matrix = adcc.AdcMatrix(method, adcc.LazyMp(reference_state))
view = matrix.block_view("ph_ph")
assert view.ndim == 2
assert view.is_core_valence_separated == ("cvs" in method)
assert view.shape == shape
assert len(view) == shape[0]
assert view.axis_blocks == ["ph"]
assert sorted(view.axis_spaces.keys()) == view.axis_blocks
assert sorted(view.axis_lengths.keys()) == view.axis_blocks
assert view.axis_spaces["ph"] == spaces_ph
assert view.axis_lengths["ph"] == shape[0]
assert view.reference_state == reference_state
assert view.mospaces == reference_state.mospaces
assert isinstance(view.timer, adcc.timings.Timer)
# Check diagonal
diff = matrix.diagonal().ph - view.diagonal().ph
assert diff.dot(diff) < 1e-12
# Check @ (one vector and multiple vectors)
invec = adcc.guess_zero(matrix)
invec.ph.set_random()
# "d" left as zero
invec_singles = adcc.AmplitudeVector(ph=invec.ph)
ref = matrix @ invec
res = view @ invec_singles
diff = res.ph - ref.ph
assert diff.dot(diff) < 1e-12
res = view @ [invec_singles, invec_singles, invec_singles]
diff = [res[i].ph - ref.ph for i in range(3)]
assert max(d.dot(d) for d in diff) < 1e-12
def test_matvec_adc2(self):
ground_state = adcc.LazyMp(cache.refstate["h2o_sto3g"])
matrix = adcc.AdcMatrix("adc2", ground_state)
vectors = [adcc.guess_zero(matrix) for i in range(3)]
for vec in vectors:
vec.set_random()
v, w, x = vectors
# Compute references:
refv = matrix.matvec(v)
refw = matrix.matvec(w)
refx = matrix.matvec(x)
# @ operator (1 vector)
resv = matrix @ v
diffv = refv - resv
assert diffv.ph.dot(diffv.ph) < 1e-12
assert diffv.pphh.dot(diffv.pphh) < 1e-12
# @ operator (multiple vectors)
resv, resw, resx = matrix @ [v, w, x]
diffs = [refv - resv, refw - resw, refx - resx]
for i in range(3):
assert diffs[i].ph.dot(diffs[i].ph) < 1e-12
assert diffs[i].pphh.dot(diffs[i].pphh) < 1e-12
# compute matvec
resv = matrix.matvec(v)
diffv = refv - resv
assert diffv.ph.dot(diffv.ph) < 1e-12
assert diffv.pphh.dot(diffv.pphh) < 1e-12
resv = matrix.rmatvec(v)
diffv = refv - resv
assert diffv.ph.dot(diffv.ph) < 1e-12
assert diffv.pphh.dot(diffv.pphh) < 1e-12
# Test apply
resv.ph = matrix.block_apply("ph_ph", v.ph)
resv.ph += matrix.block_apply("ph_pphh", v.pphh)
refv = matrix.matvec(v)
diffv = resv.ph - refv.ph
assert diffv.dot(diffv) < 1e-12
class TestAdcMatrixDenseExport(unittest.TestCase):
def base_test(self, case, method, conv_tol=1e-8, **kwargs):
kwargs.setdefault("n_states", 10)
n_states = kwargs["n_states"]
if "cvs" in method:
refstate = cache.refstate_cvs[case]
else:
refstate = cache.refstate[case]
matrix = adcc.AdcMatrix(method, refstate)
state = adcc.run_adc(matrix, method=method, conv_tol=conv_tol, **kwargs)
dense = matrix.to_dense_matrix()
assert_allclose(dense, dense.T, rtol=1e-10, atol=1e-12)
n_decimals = 10
spectrum = np.linalg.eigvalsh(dense)
rounded = np.unique(np.round(spectrum, n_decimals))[:n_states]
assert_allclose(state.excitation_energies, rounded, atol=10 * conv_tol)
def test_diagonalise_adcmatrix(self):
from adcc.workflow import diagonalise_adcmatrix
refdata = cache.reference_data["h2o_sto3g"]
matrix = adcc.AdcMatrix("adc2",
adcc.LazyMp(cache.refstate["h2o_sto3g"]))
res = diagonalise_adcmatrix(matrix,
n_states=3,
kind="singlet",
eigensolver="davidson")
ref_singlets = refdata["adc2"]["singlet"]["eigenvalues"]
assert res.converged
assert res.eigenvalues == approx(ref_singlets[:3])
guesses = adcc.guesses_singlet(matrix, n_guesses=6, block="ph")
res = diagonalise_adcmatrix(matrix,
n_states=3,
kind="singlet",
guesses=guesses)
ref_singlets = refdata["adc2"]["singlet"]["eigenvalues"]
assert res.converged
assert res.eigenvalues == approx(ref_singlets[:3])
with pytest.raises(InputError): # Too low tolerance
res = diagonalise_adcmatrix(matrix,
n_states=9,
kind="singlet",
eigensolver="davidson",
conv_tol=1e-14)
with pytest.raises(InputError): # Wrong solver method
res = diagonalise_adcmatrix(matrix,
n_states=9,
kind="singlet",
eigensolver="blubber")
with pytest.raises(InputError): # Too few guesses
res = diagonalise_adcmatrix(matrix,
n_states=9,
kind="singlet",
eigensolver="davidson",
guesses=guesses)
def test_matvec_adc2(self):
ground_state = adcc.LazyMp(cache.refstate["h2o_sto3g"])
matrix = adcc.AdcMatrix("adc2", ground_state)
cppmatrix = libadcc.AdcMatrix("adc2", ground_state)
vectors = [adcc.guess_zero(matrix) for i in range(3)]
for vec in vectors:
vec["s"].set_random()
vec["d"].set_random()
v, w, x = vectors
# Compute references:
refv = adcc.empty_like(v)
refw = adcc.empty_like(w)
refx = adcc.empty_like(x)
cppmatrix.compute_matvec(v.to_cpp(), refv.to_cpp())
cppmatrix.compute_matvec(w.to_cpp(), refw.to_cpp())
cppmatrix.compute_matvec(x.to_cpp(), refx.to_cpp())
# @ operator (1 vector)
resv = matrix @ v
diffv = refv - resv
assert diffv["s"].dot(diffv["s"]) < 1e-12
assert diffv["d"].dot(diffv["d"]) < 1e-12
# @ operator (multiple vectors)
resv, resw, resx = matrix @ [v, w, x]
diffs = [refv - resv, refw - resw, refx - resx]
for i in range(3):
assert diffs[i]["s"].dot(diffs[i]["s"]) < 1e-12
assert diffs[i]["d"].dot(diffs[i]["d"]) < 1e-12
# compute matvec
matrix.compute_matvec(v, resv)
diffv = refv - resv
assert diffv["s"].dot(diffv["s"]) < 1e-12
assert diffv["d"].dot(diffv["d"]) < 1e-12
matrix.compute_apply("ss", v["s"], resv["s"])
cppmatrix.compute_apply("ss", v["s"], refv["s"])
diffv = resv["s"] - refv["s"]
assert diffv.dot(diffv) < 1e-12
def base_adc2(self, kind, guess_function, max_iter=100):
refdata = cache.reference_data["h2o_sto3g"]
matrix = adcc.AdcMatrix("adc2", cache.refstate["h2o_sto3g"])
conv_tol = 1e-6
guesses = guess_function(matrix, n_guesses=1)
symm = IndexSpinSymmetrisation(matrix, enforce_spin_kind=kind)
inverse = IterativeInverse(matrix,
Pinv=JacobiPreconditioner,
conv_tol=conv_tol / 10,
construct_guess=guess_from_previous)
res = power_method(inverse,
guesses[0],
conv_tol=conv_tol,
explicit_symmetrisation=symm,
callback=powprint,
max_iter=max_iter)
ref_singlets = refdata["adc2"][kind]["eigenvalues"]
assert res.converged
assert 1 / res.eigenvalues[0] == approx(ref_singlets[0])
def test_construct_adcmatrix(self):
from adcc.workflow import construct_adcmatrix
#
# Construction from hfdata
#
hfdata = cache.hfdata["h2o_sto3g"]
res = construct_adcmatrix(hfdata, method="adc3")
assert isinstance(res, adcc.AdcMatrix)
assert res.method == adcc.AdcMethod("adc3")
assert res.mospaces.core_orbitals == []
assert res.mospaces.frozen_core == []
assert res.mospaces.frozen_virtual == []
res = construct_adcmatrix(hfdata, method="cvs-adc3", core_orbitals=1)
assert isinstance(res, adcc.AdcMatrix)
assert res.method == adcc.AdcMethod("cvs-adc3")
assert res.mospaces.core_orbitals == [0, 7]
assert res.mospaces.frozen_core == []
assert res.mospaces.frozen_virtual == []
res = construct_adcmatrix(hfdata, method="adc2", frozen_core=1)
assert res.mospaces.core_orbitals == []
assert res.mospaces.frozen_core == [0, 7]
assert res.mospaces.frozen_virtual == []
res = construct_adcmatrix(hfdata, method="adc2", frozen_virtual=1)
assert res.mospaces.core_orbitals == []
assert res.mospaces.frozen_core == []
assert res.mospaces.frozen_virtual == [6, 13]
res = construct_adcmatrix(hfdata,
method="adc2",
frozen_virtual=1,
frozen_core=1)
assert res.mospaces.core_orbitals == []
assert res.mospaces.frozen_core == [0, 7]
assert res.mospaces.frozen_virtual == [6, 13]
invalid_cases = [
dict(), # Missing method
dict(method="dadadad"), # Unknown method
dict(frozen_core=1), # Missing method
dict(frozen_virtual=3), # Missing method
dict(core_orbitals=4), # Missing method
dict(method="cvs-adc2"), # No core_orbitals
dict(method="cvs-adc2", frozen_core=1),
dict(method="adc2", core_orbitals=3), # Extra core parameter
dict(method="adc2", core_orbitals=3, frozen_virtual=2),
]
for case in invalid_cases:
with pytest.raises(InputError):
construct_adcmatrix(hfdata, **case)
#
# Construction from LazyMp or ReferenceState
#
refst_ful = cache.refstate["h2o_sto3g"]
refst_cvs = cache.refstate_cvs["h2o_sto3g"]
gs_ful, gs_cvs = adcc.LazyMp(refst_ful), adcc.LazyMp(refst_cvs)
for obj in [gs_ful, refst_ful]:
res = construct_adcmatrix(obj, method="adc2")
assert isinstance(res, adcc.AdcMatrix)
assert res.method == adcc.AdcMethod("adc2")
with pytest.raises(InputError, match=r"Cannot run a core-valence"):
construct_adcmatrix(obj, method="cvs-adc2x")
with pytest.warns(UserWarning,
match=r"^Ignored frozen_core parameter"):
construct_adcmatrix(obj, frozen_core=3, method="adc1")
with pytest.warns(UserWarning,
match=r"^Ignored frozen_virtual parameter"):
construct_adcmatrix(obj, frozen_virtual=1, method="adc3")
for obj in [gs_cvs, refst_cvs]:
res = construct_adcmatrix(obj, method="cvs-adc2x")
assert isinstance(res, adcc.AdcMatrix)
assert res.method == adcc.AdcMethod("cvs-adc2x")
with pytest.raises(InputError):
construct_adcmatrix(obj) # Missing method
with pytest.raises(InputError, match=r"Cannot run a general"):
construct_adcmatrix(obj, method="adc2")
with pytest.warns(UserWarning,
match=r"^Ignored core_orbitals parameter"):
construct_adcmatrix(obj, core_orbitals=2, method="cvs-adc1")
#
# Construction from ADC matrix
#
mtx_ful = adcc.AdcMatrix("adc2", gs_ful)
mtx_cvs = adcc.AdcMatrix("cvs-adc2", gs_cvs)
assert construct_adcmatrix(mtx_ful) == mtx_ful
assert construct_adcmatrix(mtx_ful, method="adc2") == mtx_ful
assert construct_adcmatrix(mtx_cvs) == mtx_cvs
assert construct_adcmatrix(mtx_cvs, method="cvs-adc2") == mtx_cvs
with pytest.warns(UserWarning, match=r"Ignored method parameter"):
construct_adcmatrix(mtx_ful, method="adc3")
with pytest.warns(UserWarning,
match=r"^Ignored core_orbitals parameter"):
construct_adcmatrix(mtx_cvs, core_orbitals=2)
with pytest.warns(UserWarning,
match=r"^Ignored frozen_core parameter"):
construct_adcmatrix(mtx_ful, frozen_core=3)
with pytest.warns(UserWarning,
match=r"^Ignored frozen_virtual parameter"):
construct_adcmatrix(mtx_cvs, frozen_virtual=1)
def test_extra_term(self):
ground_state = adcc.LazyMp(cache.refstate["h2o_sto3g"])
matrix_adc1 = adcc.AdcMatrix("adc1", ground_state)
with pytest.raises(TypeError):
matrix_adc1 += 42
matrix = adcc.AdcMatrix("adc2", ground_state)
with pytest.raises(TypeError):
adcc.AdcMatrix("adc2", ground_state, diagonal_precomputed=42)
with pytest.raises(ValueError):
adcc.AdcMatrix("adc2",
ground_state,
diagonal_precomputed=matrix.diagonal() + 42)
with pytest.raises(TypeError):
AdcExtraTerm(matrix, "fail")
with pytest.raises(TypeError):
AdcExtraTerm(matrix, {"fail": "not_callable"})
shift = -0.3
shifted = AdcMatrixShifted(matrix, shift)
# TODO: need to use AmplitudeVector to differentiate between
# diagonals for ph and pphh
# if we just pass numbers, i.e., shift
# we get 2*shift on the diagonal
ones = matrix.diagonal().ones_like()
def __shift_ph(hf, mp, intermediates):
def apply(invec):
return adcc.AmplitudeVector(ph=shift * invec.ph)
diag = adcc.AmplitudeVector(ph=shift * ones.ph)
return AdcBlock(apply, diag)
def __shift_pphh(hf, mp, intermediates):
def apply(invec):
return adcc.AmplitudeVector(pphh=shift * invec.pphh)
diag = adcc.AmplitudeVector(pphh=shift * ones.pphh)
return AdcBlock(apply, diag)
extra = AdcExtraTerm(matrix, {
'ph_ph': __shift_ph,
'pphh_pphh': __shift_pphh
})
# cannot add to 'pphh_pphh' in ADC(1) matrix
with pytest.raises(ValueError):
matrix_adc1 += extra
shifted_2 = matrix + extra
shifted_3 = extra + matrix
for manual in [shifted_2, shifted_3]:
assert_allclose(shifted.diagonal().ph.to_ndarray(),
manual.diagonal().ph.to_ndarray(),
atol=1e-12)
assert_allclose(shifted.diagonal().pphh.to_ndarray(),
manual.diagonal().pphh.to_ndarray(),
atol=1e-12)
vec = adcc.guess_zero(matrix)
vec.set_random()
ref = shifted @ vec
ret = manual @ vec
diff_s = ref.ph - ret.ph
diff_d = ref.pphh - ret.pphh
assert np.max(np.abs(diff_s.to_ndarray())) < 1e-12
assert np.max(np.abs(diff_d.to_ndarray())) < 1e-12
def test_diagonal_adc2(self):
ground_state = adcc.LazyMp(cache.refstate["h2o_sto3g"])
matrix = adcc.AdcMatrix("adc2", ground_state)
cppmatrix = libadcc.AdcMatrix("adc2", ground_state)
diff = cppmatrix.diagonal("s") - matrix.diagonal("s")
assert diff.dot(diff) < 1e-12
assert matrix.axis_spaces["ph"] == ["o1", "v1"]
assert matrix.axis_spaces["pphh"] == ["o1", "o1", "v1", "v1"]
assert matrix.axis_lengths["ph"] == 40
assert matrix.axis_lengths["pphh"] == 1600
assert matrix.reference_state == reference_state
assert matrix.mospaces == reference_state.mospaces
assert isinstance(matrix.timer, adcc.timings.Timer)
def test_properties_cvs_adc1(self):
case = "h2o_sto3g"
method = "cvs-adc1"
reference_state = cache.refstate_cvs[case]
ground_state = adcc.LazyMp(reference_state)
matrix = adcc.AdcMatrix(method, ground_state)
assert matrix.ndim == 2
assert matrix.is_core_valence_separated
assert matrix.shape == (8, 8)
assert len(matrix) == 8
assert matrix.axis_blocks == ["ph"]
assert sorted(matrix.axis_spaces.keys()) == matrix.axis_blocks
assert sorted(matrix.axis_lengths.keys()) == matrix.axis_blocks
assert matrix.axis_spaces["ph"] == ["o2", "v1"]
assert matrix.axis_lengths["ph"] == 8
assert matrix.reference_state == reference_state
assert matrix.mospaces == reference_state.mospaces
assert isinstance(matrix.timer, adcc.timings.Timer)
def test_reference_h2o_adc2x(self):
ground_state = adcc.LazyMp(cache.refstate["h2o_sto3g"])
matrix = adcc.AdcMatrix("adc2x", ground_state)
self.base_reference(matrix, self.get_ref_h2o())
def test_reference_cn_adc3(self):
ground_state = adcc.LazyMp(cache.refstate["cn_sto3g"])
matrix = adcc.AdcMatrix("adc3", ground_state)
self.base_reference(matrix, self.get_ref_cn())
def relax_cvs(scfres, method, state, ctol=5e-5):
singles_block_only = False
if adcc.AdcMethod(method).level > 1 and "d" not in state.matrix.blocks:
singles_block_only = True
# Singles block only method
refstate = adcc.ReferenceState(scfres)
origmatrix = adcc.AdcBlockView(adcc.AdcMatrix(method, refstate), "s")
else:
refstate = adcc.ReferenceState(scfres)
origmatrix = adcc.AdcMatrix(method, refstate)
matrix = AdcMatrixShifted(origmatrix)
explicit_symmetrisation = IndexSpinSymmetrisation(
matrix, enforce_spin_kind=state.kind)
assert state.kind == "singlet"
fullvec = [
guess_zero(matrix, spin_block_symmetrisation="symmetric")
for i in range(len(state.excitation_vectors))
]
for i in range(len(state.excitation_vectors)):
project_amplitude(state.excitation_vectors[i], fullvec[i])
preconditioner = JacobiPreconditioner(matrix)
relaxed_vec = []
relaxed_ene = []
residual_norms = []
for i in range(len(state.excitation_vectors)):
print("=================")
print(" State {}".format(i))
print("=================")
vec = fullvec[i].copy(
) # Not sure this copy is needed, do it for safety
origvec = vec
ene = state.excitation_energies[i]
eneold = ene
histories = []
residual = 100000
xold = vec
preconditioner.update_shifts(ene - 1e-2)
matrix.update_omega(ene - 1e-3)
print("--> Starting energy {}: {}".format(i, ene))
for it in range(100):
eps = 1e-3 # numerical fuzzing to improve conditioning
if residual > eps / 10 and it > 0:
matrix.update_omega(ene - eps)
preconditioner.update_shifts(ene - eps)
res = conjugate_gradient(
matrix,
rhs=xold,
x0=xold,
callback=default_print,
Pinv=preconditioner,
conv_tol=ctol / 10,
max_iter=400,
)
x = res.solution
x = explicit_symmetrisation.symmetrise([x], [origvec])[0]
x /= np.sqrt(x @ x)
ene = x @ matrix.matmul_orig(x)
enediff = ene - eneold
overlap = np.sqrt(np.abs(origvec @ x))
resres = matrix.matmul_orig(x) - ene * x
residual = np.sqrt(resres @ resres)
print("--> Energy {}: {} (enediff: {})"
"".format(it, ene, enediff))
print("--> Overlap {}: {}".format(it, overlap))
print("--> Residual {}: {}".format(it, residual))
if np.abs(overlap - 1) > 0.2:
if not histories:
if i == 0:
print(
" !!! Low overlap detected and got no history"
"... trying again")
xold = origvec
else:
raise RuntimeError("Low overlap and got no history.")
# Pick the energy of the historic result with the best overlap
# (smallest aberration from 1)
ene = sorted(histories, key=lambda x: x[1])[0][0] + eps
print(
" !!! Low overlap detected! Changing shift to {:.6g} "
"and trying again !!!".format(ene))
xold = origvec
elif residual < ctol:
print("--> converged")
break
else:
xold = x
eneold = ene
histories.append((ene, np.abs(overlap - 1)))
residual_norms.append(np.sqrt(resres @ resres))
relaxed_vec.append(x)
relaxed_ene.append(ene)
class CvsRelaxationState:
pass
res = CvsRelaxationState()
res.matrix = origmatrix
res.kind = "singlet"
res.eigenvectors = relaxed_vec
res.eigenvalues = np.array(relaxed_ene)
property_method = None
if singles_block_only:
# To not get crashes on property calculation (missing doubles part)
property_method = "adc1"
sstate = adcc.ExcitedStates(res,
method=method,
property_method=property_method)
sstate.residual_norms = np.array(residual_norms)
return sstate