Hi,
I'm working on a Catalyst adaptor written in Python for one of the CFD codes I use at work and I'm having trouble setting the MPI communicator I want the vtkCPProcessor object to use (in order to use a subset of MPI_COMM_WORLD). The MPI communicator I create is a mpi4py.MPI_Comm object, which I convert to a vtkMPICommunicator object using vtk.vtkMPI4PyCommunicator.ConvertToVTK. However vtk.vtkPVCatalystPython.vtkCPProcessor.Initialize is expecting a vtkMPICommunicatorOpaqueComm object and there does not seem to be a way for me to create such an object from the Python interface. Am I missing something here or is something not wrapped correctly or wrong? For the moment I use mpi4py.MPI.COMM_WORLD to test everything. The following minimal example replicates my problem: import mpi4py.MPI import vtk comm = mpi4py.MPI.COMM_WORLD coprocessor = vtk.vtkPVCatalystPython.vtkCPProcessor() coprocessor.Initialize(vtk.vtkMPI4PyCommunicator.ConvertToVTK(comm)) The last line fails with this message: TypeError: Initialize argument 1: method requires a vtkMPICommunicatorOpaqueComm, a vtkMPICommunicator was provided. I hope I post on the right mailing list as this could actually be a problem in VTK. Thank you for your help. Best, Yohann V. # " Ce courriel et les documents qui lui sont joints peuvent contenir des informations confidentielles, être soumis aux règlementations relatives au contrôle des exportations ou ayant un caractère privé. S'ils ne vous sont pas destinés, nous vous signalons qu'il est strictement interdit de les divulguer, de les reproduire ou d'en utiliser de quelque manière que ce soit le contenu. Toute exportation ou réexportation non autorisée est interdite Si ce message vous a été transmis par erreur, merci d'en informer l'expéditeur et de supprimer immédiatement de votre système informatique ce courriel ainsi que tous les documents qui y sont attachés." ****** " This e-mail and any attached documents may contain confidential or proprietary information and may be subject to export control laws and regulations. If you are not the intended recipient, you are notified that any dissemination, copying of this e-mail and any attachments thereto or use of their contents by any means whatsoever is strictly prohibited. Unauthorized export or re-export is prohibited. If you have received this e-mail in error, please advise the sender immediately and delete this e-mail and all attached documents from your computer system." #
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