From: Yoann Audouin Date: Tue, 4 Oct 2022 07:38:12 +0000 (+0200) Subject: Adding code for Python parallel mesh with test + removing nbMesherThreads X-Git-Tag: V9_10_0b1~9^2~4 X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=effd6e22299c58b7829614ca9f66796a2e1b3dd9;p=modules%2Fsmesh.git Adding code for Python parallel mesh with test + removing nbMesherThreads --- diff --git a/idl/SMESH_Mesh.idl b/idl/SMESH_Mesh.idl index f420e4ff7..7b86361d8 100644 --- a/idl/SMESH_Mesh.idl +++ b/idl/SMESH_Mesh.idl @@ -905,11 +905,6 @@ module SMESH void SetNbThreads(in long nbThreads); /*! - * \brief Set Number of Threads for mesher - */ - void SetMesherNbThreads(in long nbThreads); - - /*! * Get mesh description */ diff --git a/src/SMESH/SMESH_Gen.cxx b/src/SMESH/SMESH_Gen.cxx index f977bce53..922a6df95 100644 --- a/src/SMESH/SMESH_Gen.cxx +++ b/src/SMESH/SMESH_Gen.cxx @@ -279,7 +279,7 @@ bool SMESH_Gen::parallelComputeSubMeshes( TopAbs_ShapeEnum previousShapeType = TopAbs_VERTEX; int nbThreads = aMesh.GetNbThreads(); - MESSAGE("Compute submeshes with threads: " << nbThreads << " mesher: " << aMesh.GetMesherNbThreads()); + MESSAGE("Compute submeshes with threads: " << nbThreads); smIt = shapeSM->getDependsOnIterator(includeSelf, !complexShapeFirst); diff --git a/src/SMESH/SMESH_Mesh.cxx b/src/SMESH/SMESH_Mesh.cxx index 3eb08a85c..bd101248c 100644 --- a/src/SMESH/SMESH_Mesh.cxx +++ b/src/SMESH/SMESH_Mesh.cxx @@ -87,7 +87,7 @@ namespace fs=boost::filesystem; #define MAX_MED_GROUP_NAME_LENGTH 80 #ifdef _DEBUG_ -static int MYDEBUG = 1; +static int MYDEBUG = 0; #else static int MYDEBUG = 0; #endif diff --git a/src/SMESH/SMESH_Mesh.hxx b/src/SMESH/SMESH_Mesh.hxx index 8c4d0b18b..ed897979f 100644 --- a/src/SMESH/SMESH_Mesh.hxx +++ b/src/SMESH/SMESH_Mesh.hxx @@ -392,9 +392,6 @@ class SMESH_EXPORT SMESH_Mesh int GetNbThreads(){return _NbThreads;}; void SetNbThreads(int nbThreads){_NbThreads=nbThreads;}; - int GetMesherNbThreads(){return _MesherNbThreads;}; - void SetMesherNbThreads(int nbThreads){_MesherNbThreads=nbThreads;}; - void InitPoolThreads(){_pool = new boost::asio::thread_pool(_NbThreads);}; void DeletePoolThreads(){delete _pool;}; @@ -456,7 +453,6 @@ protected: // Mutex for multhitreading write in SMESH_Mesh std::mutex _my_lock; int _NbThreads=0; - int _MesherNbThreads=0; protected: SMESH_Mesh(); diff --git a/src/SMESH_I/SMESH_2smeshpy.cxx b/src/SMESH_I/SMESH_2smeshpy.cxx index a9fff0a6d..4ac51ac99 100644 --- a/src/SMESH_I/SMESH_2smeshpy.cxx +++ b/src/SMESH_I/SMESH_2smeshpy.cxx @@ -2213,7 +2213,7 @@ bool _pyMesh::NeedMeshAccess( const Handle(_pyCommand)& theCommand ) "GetElemFaceNodes", "GetFaceNormal", "FindElementByNodes", "IsPoly","IsQuadratic","BaryCenter","GetHypothesisList", "SetAutoColor", "GetAutoColor", "Clear", "ConvertToStandalone", "GetMeshOrder", "SetMeshOrder", - "SetNbThreads", "SetMesherNbThreads" + "SetNbThreads" ,"" }; // <- mark of end sameMethods.Insert( names ); } diff --git a/src/SMESH_I/SMESH_Mesh_i.cxx b/src/SMESH_I/SMESH_Mesh_i.cxx index 3bd2f7fe7..a7abda6db 100644 --- a/src/SMESH_I/SMESH_Mesh_i.cxx +++ b/src/SMESH_I/SMESH_Mesh_i.cxx @@ -7046,15 +7046,6 @@ void SMESH_Mesh_i::SetNbThreads(int nbThreads){ _impl->SetNbThreads(nbThreads); } -//============================================================================= -/*! - * \brief Set the number of threads for the mesher for a parallel computation - */ -//============================================================================= -void SMESH_Mesh_i::SetMesherNbThreads(int nbThreads){ - _impl->SetMesherNbThreads(nbThreads); -} - //============================================================================= /*! diff --git a/src/SMESH_SWIG/smeshBuilder.py b/src/SMESH_SWIG/smeshBuilder.py index a06ece584..ee22a96bd 100644 --- a/src/SMESH_SWIG/smeshBuilder.py +++ b/src/SMESH_SWIG/smeshBuilder.py @@ -462,6 +462,21 @@ class smeshBuilder( SMESH._objref_SMESH_Gen, object ): obj,name = name,obj return Mesh(self, self.geompyD, obj, name) + def ParallelMesh(self, obj, param, nbThreads, name=0): + """ + Create a parallel mesh. + + Parameters: + obj: geometrical object for meshing + name: the name for the new mesh. + param: full mesh parameters + nbThreads: Number of threads for parallelisation. + + Returns: + an instance of class :class:`ParallelMesh`. + """ + return ParallelMesh(self, self.geompyD, obj, param, nbThreads, name) + def RemoveMesh( self, mesh ): """ Delete a mesh @@ -1863,31 +1878,6 @@ class Mesh(metaclass = MeshMeta): geom = self.geom return self.smeshpyD.Evaluate(self.mesh, geom) - def ParallelCompute(self, nbThreads, mesherNbThreads=1, geom=0, discardModifs=False, refresh=False): - """ - Parallel computation of the mesh and return the status of the computation - The mesh must contains have be constructed using create_parallel_mesh - - Parameters: - nbThreads: Number of threads to use for a parallel computation - geom: geomtrical shape on which mesh data should be computed - discardModifs: if True and the mesh has been edited since - a last total re-compute and that may prevent successful partial re-compute, - then the mesh is cleaned before Compute() - refresh: if *True*, Object Browser is automatically updated (when running in GUI) - - Returns: - True or False - """ - if (nbThreads <= 1): - raise ValueError("nbThreads must be strictly greater than 1") - if (mesherNbThreads < 1): - raise ValueError("nbThreads must be greater than 1") - - self.mesh.SetMesherNbThreads(mesherNbThreads) - self.mesh.SetNbThreads(nbThreads) - return self.Compute(geom=geom, discardModifs=discardModifs, refresh=refresh) - def Compute(self, geom=0, discardModifs=False, refresh=False): """ Compute the mesh and return the status of the computation @@ -7511,6 +7501,121 @@ class Mesh(metaclass = MeshMeta): pass # end of Mesh class +def _copy_netgen_param(dim, local_param, global_param): + if dim==1: + #TODO: Try to identify why we need to substract 1 + local_param.NumberOfSegments(int(global_param.GetNbSegPerEdge())-1) + elif dim==2: + local_param.SetMaxSize(global_param.GetMaxSize()) + local_param.SetMinSize(global_param.GetMinSize()) + local_param.SetOptimize(global_param.GetOptimize()) + local_param.SetFineness(global_param.GetFineness()) + local_param.SetNbSegPerEdge(global_param.GetNbSegPerEdge()) + local_param.SetNbSegPerRadius(global_param.GetNbSegPerRadius()) + local_param.SetGrowthRate(global_param.GetGrowthRate()*0.9) + local_param.SetChordalError(global_param.GetChordalError()) + local_param.SetChordalErrorEnabled(global_param.GetChordalErrorEnabled()) + local_param.SetUseSurfaceCurvature(global_param.GetUseSurfaceCurvature()) + local_param.SetUseDelauney(global_param.GetUseDelauney()) + local_param.SetQuadAllowed(global_param.GetQuadAllowed()) + local_param.SetWorstElemMeasure(global_param.GetWorstElemMeasure()) + local_param.SetCheckChartBoundary(global_param.GetCheckChartBoundary()) + local_param.SetNbThreads(global_param.GetNbThreads()) + else: + local_param.SetMaxSize(global_param.GetMaxSize()) + local_param.SetMinSize(global_param.GetMinSize()) + local_param.SetOptimize(global_param.GetOptimize()) + local_param.SetCheckOverlapping(global_param.GetCheckOverlapping()) + local_param.SetCheckChartBoundary(global_param.GetCheckChartBoundary()) + local_param.SetFineness(global_param.GetFineness()) + local_param.SetNbSegPerEdge(global_param.GetNbSegPerEdge()) + local_param.SetNbSegPerRadius(global_param.GetNbSegPerRadius()) + local_param.SetGrowthRate(global_param.GetGrowthRate()) + local_param.SetNbThreads(global_param.GetNbThreads()) + +class ParallelMesh(Mesh): + """ + Surcharge on Mesh for parallel computation of a mesh + """ + + def __init__(self, smeshpyD, geompyD, geom, param, nbThreads, name=0): + """ + Create a parallel mesh. + + Parameters: + geom: geometrical object for meshing + param: full mesh parameters + nbThreads: Number of threads for parallelisation. + name: the name for the new mesh. + + Returns: + an instance of class :class:`ParallelMesh`. + """ + + if not isinstance(geom, geomBuilder.GEOM._objref_GEOM_Object): + raise ValueError("geom argument must be a geometry") + + if not isinstance(param, NETGENPlugin._objref_NETGENPlugin_Hypothesis): + raise ValueError("param must come from NETGENPlugin") + + if nbThreads < 1: + raise ValueError("Number of threads must be stricly greater than 1") + + # Splitting geometry into 3D elements and all the 2D/1D into one compound + object_solids = geompyD.ExtractShapes(geom, geompyD.ShapeType["SOLID"], + True) + + solids = [] + isolid = 0 + for solid in object_solids: + isolid += 1 + geompyD.addToStudyInFather( geom, solid, 'Solid_{}'.format(isolid) ) + solids.append(solid) + + faces = [] + iface = 0 + for isolid, solid in enumerate(solids): + solid_faces = geompyD.ExtractShapes(solid, geompyD.ShapeType["FACE"], + True) + for face in solid_faces: + faces.append(face) + iface += 1 + geompyD.addToStudyInFather(solid, face, + 'Face_{}'.format(iface)) + + # Creating submesh for edges 1D/2D part + + all_faces = geompyD.MakeCompound(faces) + geompyD.addToStudy(all_faces, 'Compound_1') + all_faces = geompyD.MakeGlueEdges(all_faces, 1e-07) + all_faces = geompyD.MakeGlueFaces(all_faces, 1e-07) + geompyD.addToStudy(all_faces, 'global2D') + + super(ParallelMesh, self).__init__(smeshpyD, geompyD, geom, name) + + self.mesh.SetNbThreads(nbThreads) + + self.UseExistingSegments() + self.UseExistingFaces() + + algo2d = self.Triangle(geom=all_faces, algo="NETGEN_2D") + param2d = algo2d.Parameters() + + _copy_netgen_param(2, param2d, param) + + for solid_id, solid in enumerate(solids): + name = "Solid_{}".format(solid_id) + self.UseExistingSegments(geom=solid) + self.UseExistingFaces(geom=solid) + algo3d = self.Tetrahedron(geom=solid, algo="NETGEN_3D_Remote") + + param3d = algo3d.Parameters() + + _copy_netgen_param(3, param3d, param) + + pass # End of ParallelMesh + + class meshProxy(SMESH._objref_SMESH_Mesh): """ Private class used to compensate change of CORBA API of SMESH_Mesh for backward compatibility diff --git a/test/SMESH_ParallelCompute.py b/test/SMESH_ParallelCompute.py new file mode 100644 index 000000000..eeddd3f02 --- /dev/null +++ b/test/SMESH_ParallelCompute.py @@ -0,0 +1,131 @@ +# contains function to compute a mesh in parallel +from platform import java_ver +import sys +from tkinter import W +import salome + +import time + + +salome.salome_init() +import salome_notebook +notebook = salome_notebook.NoteBook() + +### +### GEOM component +### + +import GEOM +from salome.geom import geomBuilder +from salome.smesh import smeshBuilder +import math +import SALOMEDS + +import numpy as np + +geompy = geomBuilder.New() + +smesh = smeshBuilder.New() + + +def build_seq_mesh(nbox, boxsize, offset): + # Create 3D faces + boxes = [] + # First creating all the boxes + for i in range(nbox): + for j in range(nbox): + for k in range(nbox): + + x_orig = i*(boxsize+offset) + y_orig = j*(boxsize+offset) + z_orig = k*(boxsize+offset) + + tmp_box = geompy.MakeBoxDXDYDZ(boxsize, boxsize, boxsize) + + if not i == j == k == 0: + box = geompy.MakeTranslation(tmp_box, x_orig, + y_orig, z_orig) + else: + box = tmp_box + + geompy.addToStudy(box, 'box_{}:{}:{}'.format(i, j, k)) + + boxes.append(box) + + # Create fuse of all boxes + all_boxes = geompy.MakeCompound(boxes) + geompy.addToStudy(all_boxes, 'Compound_1') + + # Removing duplicates faces and edges + all_boxes = geompy.MakeGlueFaces(all_boxes, 1e-07) + geompy.addToStudy(all_boxes, 'Glued_Faces_1') + + all_boxes = geompy.MakeGlueEdges(all_boxes, 1e-07) + geompy.addToStudy(all_boxes, 'rubik_cube') + + + # Building sequetial mesh + print("Creating mesh") + all_box_mesh = smesh.Mesh(all_boxes, "seq_mesh") + + print("Adding algo") + algo3d = all_box_mesh.Tetrahedron(algo=smeshBuilder.NETGEN_1D2D3D) + + netgen_parameters = algo3d.Parameters() + netgen_parameters.SetMaxSize(34.641) + netgen_parameters.SetMinSize(0.141421) + netgen_parameters.SetOptimize(1) + netgen_parameters.SetCheckOverlapping(0) + netgen_parameters.SetCheckChartBoundary(0) + netgen_parameters.SetFineness(5) + netgen_parameters.SetNbSegPerEdge(16*(boxsize//100)) + netgen_parameters.SetNbSegPerRadius(1.5) + netgen_parameters.SetGrowthRate(0.15) + netgen_parameters.SetChordalError(-1) + netgen_parameters.SetChordalErrorEnabled(0) + netgen_parameters.SetUseSurfaceCurvature(1) + netgen_parameters.SetQuadAllowed(0) + netgen_parameters.SetCheckOverlapping(False) + netgen_parameters.SetNbThreads(2) + + return all_boxes, all_box_mesh, netgen_parameters + +def run_test(nbox=2, boxsize=100): + """ Run sequential mesh and parallel version of it + + nbox: NUmber of boxes + boxsize: Size of each box + """ + geom, seq_mesh, netgen_parameters = build_seq_mesh(nbox, boxsize, 0) + + par_mesh = smesh.ParallelMesh(geom, netgen_parameters, 6, name="par_mesh") + + start = time.monotonic() + is_done = seq_mesh.Compute() + assert is_done + stop = time.monotonic() + time_seq = stop-start + + start = time.monotonic() + is_done = par_mesh.Compute() + assert is_done + stop = time.monotonic() + time_par = stop-start + + print(" Tetrahedron: ", seq_mesh.NbTetras(), par_mesh.NbTetras()) + print(" Triangle: ", seq_mesh.NbTriangles(), par_mesh.NbTriangles()) + print(" edge: ", seq_mesh.NbEdges(), par_mesh.NbEdges()) + + assert par_mesh.NbTetras() > 0 + assert par_mesh.NbTriangles() > 0 + assert par_mesh.NbEdges() > 0 + + print("Time elapsed (seq, par): ", time_seq, time_par) + +def main(): + nbox = 2 + boxsize = 100 + run_test(nbox, boxsize) + +main() + diff --git a/test/netgen_runner.py b/test/netgen_runner.py index a23c7e9ce..be8386fcb 100644 --- a/test/netgen_runner.py +++ b/test/netgen_runner.py @@ -22,7 +22,7 @@ import medcoupling as mc def create_param_file(param_file): """ Create a parameter file for runner """ - param="""1 + param = """1 34.64 0.14 16 @@ -43,8 +43,10 @@ def create_param_file(param_file): 0 0 2 +2 0 +0 0 0""" with open(param_file, "w") as ffile: @@ -57,69 +59,71 @@ def test_netgen3d(): box = geompy.MakeBoxDXDYDZ(200, 200, 200) geompy.ExtractShapes(box, geompy.ShapeType["FACE"], True) - Groupe_1 = geompy.CreateGroup(box, geompy.ShapeType["FACE"]) - geompy.UnionIDs(Groupe_1, [3, 13, 23, 27, 31, 33]) + groupe_1 = geompy.CreateGroup(box, geompy.ShapeType["FACE"]) + geompy.UnionIDs(groupe_1, [3, 13, 23, 27, 31, 33]) - # TODO: useful ? - [_, _, _, _, _, _, Groupe_1] = geompy.GetExistingSubObjects(box, False) + [_, _, _, _, _, _, groupe_1] = geompy.GetExistingSubObjects(box, False) # Creating 2D mesh - NETGEN_2D_Parameters_1 = smesh.CreateHypothesisByAverageLength( + netgen_2d_parameters_1 = smesh.CreateHypothesisByAverageLength( 'NETGEN_Parameters_2D', 'NETGENEngine', 34.641, 0) - Mesh2D = smesh.Mesh(Groupe_1, 'Maillage_1') - status = Mesh2D.AddHypothesis(Groupe_1, NETGEN_2D_Parameters_1) - NETGEN_1D_2D = Mesh2D.Triangle(algo=smeshBuilder.NETGEN_1D2D) - isDone = Mesh2D.Compute() - smesh.SetName(Mesh2D, 'Maillage_1') + mesh_2d = smesh.Mesh(groupe_1, 'Maillage_1') + mesh_2d.AddHypothesis(groupe_1, netgen_2d_parameters_1) + mesh_2d.Triangle(algo=smeshBuilder.NETGEN_1D2D) + is_done = mesh_2d.Compute() + assert is_done + smesh.SetName(mesh_2d, 'Maillage_1') - # tmp_dir = tempfile.mkdtemp() with tempfile.TemporaryDirectory() as tmp_dir: - mesh_file = path.join(tmp_dir, "mesh.med") - shape_file = path.join(tmp_dir, "shape.step") - param_file = path.join(tmp_dir, "param.txt") - output_mesh = path.join(tmp_dir, "mesh3D.med") - - print("Running in folder: ", tmp_dir) - create_param_file(param_file) - - Mesh2D.ExportMED(mesh_file, 0, 41, 1, Mesh2D, 1, [], '', -1, 1) - geompy.ExportSTEP(box, shape_file, GEOM.LU_METER) - - runner = path.join("${NETGENPLUGIN_ROOT_DIR}", - "bin", - "salome", - "NETGENPlugin_Runner") - - cmd = "{runner} NETGEN3D {mesh_file} {shape_file} "\ - "{param_file} NONE 2 NONE {output_mesh}"\ - .format(runner=runner, - mesh_file=mesh_file, - shape_file=shape_file, - param_file=param_file, - output_mesh=output_mesh) - print(cmd) - subprocess.check_call(cmd, shell=True) - - meshRead = mc.ReadUMeshFromFile (output_mesh, "MESH", 0) - - nbTetras = meshRead.getNumberOfCellsWithType(mc.NORM_TETRA4) - nbPoints = meshRead.getNumberOfNodes() - - meshRead = mc.ReadUMeshFromFile (output_mesh, "MESH", -1) - nbTriangles = meshRead.getNumberOfCellsWithType(mc.NORM_TRI3) - - meshRead = mc.ReadUMeshFromFile (output_mesh, "MESH", -2) - nbSegments = meshRead.getNumberOfCellsWithType(mc.NORM_SEG2) - - print("Nb Tetras:", nbTetras) - print("Nb Triangles:", nbTriangles) - print("Nb Segments:", nbSegments) - print("Nb Points:", nbPoints) - - assert(nbPoints > 0) - assert(nbSegments > 0) - assert(nbTriangles > 0) - assert(nbTetras > 0) + mesh_file = path.join(tmp_dir, "mesh.med") + shape_file = path.join(tmp_dir, "shape.step") + param_file = path.join(tmp_dir, "param.txt") + output_mesh = path.join(tmp_dir, "mesh3D.med") + + print("Running in folder: ", tmp_dir) + create_param_file(param_file) + + mesh_2d.ExportMED(mesh_file, 0, 41, 1, mesh_2d, 1, [], '', -1, 1) + geompy.ExportSTEP(box, shape_file, GEOM.LU_METER) + + runner = path.join("${NETGENPLUGIN_ROOT_DIR}", + "bin", + "salome", + "NETGENPlugin_Runner") + + if sys.platform == 'win32': + runner += ".exe" + + cmd = "{runner} NETGEN3D {mesh_file} {shape_file} "\ + "{param_file} NONE NONE {output_mesh}"\ + .format(runner=runner, + mesh_file=mesh_file, + shape_file=shape_file, + param_file=param_file, + output_mesh=output_mesh) + print(cmd) + subprocess.check_call(cmd, shell=True) + + mesh_read = mc.ReadUMeshFromFile(output_mesh, "MESH", 0) + + nb_tetras = mesh_read.getNumberOfCellsWithType(mc.NORM_TETRA4) + nb_points = mesh_read.getNumberOfNodes() + + mesh_read = mc.ReadUMeshFromFile(output_mesh, "MESH", -1) + nb_triangles = mesh_read.getNumberOfCellsWithType(mc.NORM_TRI3) + + mesh_read = mc.ReadUMeshFromFile(output_mesh, "MESH", -2) + nb_segments = mesh_read.getNumberOfCellsWithType(mc.NORM_SEG2) + + print("Nb Tetras:", nb_tetras) + print("Nb Triangles:", nb_triangles) + print("Nb Segments:", nb_segments) + print("Nb Points:", nb_points) + + assert nb_points > 0 + assert nb_segments > 0 + assert nb_triangles > 0 + assert nb_tetras > 0 if __name__ == "__main__": test_netgen3d() diff --git a/test/tests.set b/test/tests.set index 4664c6a51..2c2d901c8 100644 --- a/test/tests.set +++ b/test/tests.set @@ -64,6 +64,7 @@ SET(BAD_TESTS SMESH_test4.py SMESH_create_dual_mesh_adapt.py netgen_runner.py + SMESH_ParallelCompute.py ) IF(NOT WIN32) LIST(APPEND BAD_TESTS