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76 lines
2.3 KiB
76 lines
2.3 KiB
2 years ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: PipelineParallelism.cxx,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// This example demonstrates how to write a pipeline parallel application
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// with VTK. It creates two parts of a pipeline on a two different
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// processors and connects them with ports. The two processes can then
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// process the data in a pipeline mode, i.e:
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// 1. Consumer asks the producer to start producing data,
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// 2. Consumer receives data and starts processing it,
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// 3. Producer starts producing new data,
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// 4. Goto 2 unless done.
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// The pipeline used in this example is as follows:
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// rtSource -> OutputPort --- InputPort -> contour -> Render
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// process 0 process 1
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// See pipe1.cxx and pipe2.cxx for the pipelines.
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#include "PipelineParallelism.h"
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int main( int argc, char* argv[] )
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{
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// Note that this will create a vtkMPIController if MPI
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// is configured, vtkThreadedController otherwise.
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vtkMultiProcessController* controller = vtkMultiProcessController::New();
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controller->Initialize(&argc, &argv);
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// When using MPI, the number of processes is determined
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// by the external program which launches this application.
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// However, when using threads, we need to set it ourselves.
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if (controller->IsA("vtkThreadedController"))
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{
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// Set the number of processes to 2 for this example.
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controller->SetNumberOfProcesses(2);
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}
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int numProcs = controller->GetNumberOfProcesses();
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if (numProcs != 2)
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{
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cerr << "This example requires two processes." << endl;
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controller->Finalize();
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controller->Delete();
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return 1;
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}
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// Assign the functions and execute them
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controller->SetMultipleMethod(0, pipe1, 0);
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controller->SetMultipleMethod(1, pipe2, 0);
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controller->MultipleMethodExecute();
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// Clean-up and exit
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controller->Finalize();
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controller->Delete();
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return 0;
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}
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