def update_values(self,
intercomm_dictionary = {}):
log_file = self.logger.handlers[0].baseFilename
n_oct = self._n_oct
o_ranges = self._mat.getOwnershipRange()
b_bound = self._b_bound
grid = self._proc_g
# Upper bound octree's id contained.
up_id_octree = o_ranges[0] + n_oct
# Octree's ids contained.
ids_octree_contained = range(o_ranges[0], up_id_octree)
# Calling "allgather" to obtain data from the corresponding grid,
# onto the intercommunicators created, not the intracommunicators.
# http://www.mcs.anl.gov/research/projects/mpi/mpi-standard/mpi-report-1.1/node114.htm#Node117
# http://mpitutorial.com/tutorials/mpi-broadcast-and-collective-communication/
# http://www.linux-mag.com/id/1412/
for key, intercomm in intercomm_dictionary.items():
# Extending a list with the lists obtained by the other processes
# of the corresponding intercommunicator.
self._edg.extend(intercomm.allgather(self._edl))
self._res_g.extend(intercomm.allgather(self._res_l))
# Residual evaluation...
for index, dictionary in enumerate(self._res_g):
for center, solution_value in dictionary.items():
local_idx = self._octree.get_point_owner_idx(center)
global_idx = local_idx + o_ranges[0]
if global_idx in ids_octree_contained:
center_cell_container = self._octree.get_center(local_idx)[:2]
location = utilities.points_location(center,
center_cell_container)
neigh_centers, neigh_values = ([] for i in range(0, 2))
(neigh_centers,
neigh_values) = self.find_right_neighbours(location ,
local_idx,
o_ranges[0])
bilinear_value = utilities.bil_interp(center ,
neigh_centers,
neigh_values)
insert_mode = PETSc.InsertMode.INSERT_VALUES
value = bilinear_value - solution_value
self._res.setValue(global_idx,
value ,
insert_mode)
self._res.assemblyBegin()
self._res.assemblyEnd()
# "self.__temp_data_global" will be a list of same structures of data,
# after the "allgather" call; these structures are dictionaries.
for index, dictionary in enumerate(self._edg):
for key, center in dictionary.items():
(x_center, y_center) = center
into_background = True
ghost_boundary = False
if len(key) == 3:
ghost_boundary = True
# We are onto grids of the first level.
if grid:
local_idx = self._octree.get_point_owner_idx((x_center,
y_center))
# We are onto the background grid.
else:
if key[2] == 0:
x_center = x_center - key[3]
if key[2] == 1:
x_center = x_center + key[3]
if key[2] == 2:
y_center = y_center - key[3]
if key[2] == 3:
y_center = y_center + key[3]
into_background = utilities.check_into_square((x_center,
y_center) ,
b_bound ,
self.logger ,
log_file)
if into_background:
# The function "get_point_owner_idx" wants only one argument
# so we are passing it a tuple.
local_idx = self._octree.get_point_owner_idx((x_center,
y_center))
# Is this "else" useful? For me no.
else:
local_idx = self._octree.get_point_owner_idx(center)
global_idx = local_idx + o_ranges[0]
if global_idx in ids_octree_contained:
# Appending a tuple containing the grid number and
# the corresponding octant index.
if ghost_boundary:
self._eil.append((key[0], key[1], key[2]))
else:
self._eil.append((key[0], key[1]))
if into_background:
center_cell_container = self._octree.get_center(local_idx)[:2]
location = utilities.points_location((x_center,
y_center),
center_cell_container)
neigh_centers, neigh_values = ([] for i in range(0, 2))
(neigh_centers, neigh_values) = self.find_right_neighbours(location ,
local_idx,
o_ranges[0])
solution_value = utilities.bil_interp((x_center,
y_center) ,
neigh_centers,
neigh_values)
else:
solution_value = ExactSolution2D.ExactSolution2D.solution(x_center,
y_center)
self._evl.append(solution_value)
# Updating data for each process into "self.__intra_extra_indices_global"
# and "self.__intra_extra_values_global", calling "allgather" to obtain
# data from the corresponding grid onto the intercommunicators created,
# not the intracommunicators.
for key, intercomm in intercomm_dictionary.items():
self._eig.extend(intercomm.allgather(self._eil))
self._evg.extend(intercomm.allgather(self._evl))
for index, values in enumerate(self._eig):
for position, value in enumerate(values):
# Check if the global index belong to the process.
if value[1] in ids_octree_contained:
# Check if we are onto the right grid.
if value[0] == self._proc_g:
intra_extra_value = self._evg[index][position]
# Background grid.
if grid == 0:
insert_mode = PETSc.InsertMode.INSERT_VALUES
# Here "insert_mode" does not affect nothing.
if len(value) == 3:
self._e_array_gb.setValue(value[1],
intra_extra_value,
insert_mode)
else:
self._e_array.setValue(value[1] ,
intra_extra_value,
insert_mode)
else:
insert_mode = PETSc.InsertMode.ADD_VALUES
self._e_array.setValue(value[1] ,
intra_extra_value,
insert_mode)
self._e_array.assemblyBegin()
self._e_array.assemblyEnd()
self._e_array_gb.assemblyBegin()
self._e_array_gb.assemblyEnd()
# Resetting structures used for the "allgather" functions.
self.init_e_structures()
self.logger.info("Updated inter_extra_array for comm \"" +
str(self._comm.Get_name()) +
"\" and rank \"" +
str(self._comm.Get_rank()) +
"\" of grid \"" +
str(self._proc_g) +
"\":\n" +
str(self._e_array.getArray()))
def set_b_c(self):
"""Method to set boundary conditions for the current problem."""
penalization = self._pen
log_file = self.logger.handlers[0].baseFilename
b_bound = self._b_bound
grid = self._proc_g
n_oct = self._n_oct
nfaces = glob.nfaces
# \"getOwnershipRange()\" gives us the local ranges of the matrix owned
# by the current process.
o_ranges = self._mat.getOwnershipRange()
h = self._h
h2 = h * h
is_background = False
overlapping = self._over_l
# If we are onto the grid \"0\", we are onto the background grid.
if not grid:
is_background = True
b_indices, b_values = ([] for i in range(0, 2))# Boundary indices/values
b_centers, b_faces = ([] for i in range(0, 2)) # Boundary centers/faces
for octant in xrange(0, n_oct):
# Global index of the current local octant \"octant\".
g_octant = o_ranges[0] + octant
py_oct = self._octree.get_octant(octant)
center = self._octree.get_center(octant)[:2]
for face in xrange(0, nfaces):
# If we have an edge on the boundary.
if self._octree.get_bound(py_oct,
face):
b_indices.append(g_octant)
b_faces.append(face)
b_centers.append(center)
b_values = self.eval_b_c(b_centers,
b_faces)
b_values = b_values.tolist()
if is_background:
if overlapping:
self.over_adds(b_centers,
b_faces ,
b_values ,
b_indices)
# Grids not of the background: equal to number >= 1.
else:
for i, center in enumerate(b_centers):
# Check if foreground grid is inside the background one.
check = utilities.check_into_square(center ,
b_bound ,
self.logger,
log_file)
if check:
# Can't use list as dictionary's keys.
# http://stackoverflow.com/questions/7257588/why-cant-i-use-a-list-as-a-dict-key-in-python
# https://wiki.python.org/moin/DictionaryKeys
key = (grid , # Grid (0 is for the background grid)
b_indices[i], # Global index of the octant
b_faces[i] , # Boundary face
h) # Edge's length
# We store the centers of the cells on the boundary.
self._edl.update({key : center})
b_values[i] = self._e_array.getValue(b_indices[i])
# Residual evaluation...
sol_value = self._sol.getValue(b_indices[i])
self._res_l.update({tuple(center) : sol_value})
dups = collections.defaultdict(list)
for i, e in enumerate(b_indices):
dups[e].append(i)
# Popped elements.
p_els = 0
for k, v in sorted(dups.iteritems()):
if len(v) >= 2:
for i in range(1, len(v)):
b_indices.pop(v[i] - p_els)
b_values.pop(v[i] - p_els)
p_els = p_els + 1
b_values[:] = [b_value * (-1/h2) for b_value in b_values]
insert_mode = PETSc.InsertMode.ADD_VALUES
self._rhs.setValues(b_indices,
b_values ,
insert_mode)
# ATTENTION!! Non using these functions will give you an unassembled
# vector PETSc.
self._rhs.assemblyBegin()
self._rhs.assemblyEnd()
msg = "Set boundary conditions"
extra_msg = "of grid \"" + str(self._proc_g) + "\""
self.log_msg(msg ,
"info",
extra_msg)
