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MeshFromVertices in parallel #634

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merged 3 commits into from
Nov 6, 2023
Merged

MeshFromVertices in parallel #634

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0a80758
Add distributing of mesh
KulaginVladimir Nov 4, 2023
f088aae
Upd
KulaginVladimir Nov 4, 2023
88e2597
Update festim/meshing/mesh_from_vertices.py
KulaginVladimir Nov 6, 2023
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28 changes: 16 additions & 12 deletions festim/meshing/mesh_from_vertices.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,17 +24,21 @@ def __init__(self, vertices, **kwargs) -> None:

def generate_mesh_from_vertices(self):
"""Generates a 1D mesh"""
vertices = sorted(np.unique(self.vertices))
nb_points = len(vertices)
nb_cells = nb_points - 1
editor = f.MeshEditor()
mesh = f.Mesh()
editor.open(mesh, "interval", 1, 1) # top. and geom. dimension are both 1
editor.init_vertices(nb_points) # number of vertices
editor.init_cells(nb_cells) # number of cells
for i in range(0, nb_points):
editor.add_vertex(i, np.array([vertices[i]]))
for j in range(0, nb_cells):
editor.add_cell(j, np.array([j, j + 1]))
editor.close()
# the following is needed to avoid breaking in parrallel
# see issue 497
if f.MPI.comm_world.rank == 0:
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vertices = sorted(np.unique(self.vertices))
nb_points = len(vertices)
nb_cells = nb_points - 1
editor = f.MeshEditor()
editor.open(mesh, "interval", 1, 1) # top. and geom. dimension are both 1
editor.init_vertices(nb_points) # number of vertices
editor.init_cells(nb_cells) # number of cells
for i in range(0, nb_points):
editor.add_vertex(i, np.array([vertices[i]]))
for j in range(0, nb_cells):
editor.add_cell(j, np.array([j, j + 1]))
editor.close()
f.MeshPartitioning.build_distributed_mesh(mesh)
self.mesh = mesh
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