Hi, Regarding the initial problem, would it be useful to add a new method Initialize(vtkMPICommunicator* comm) to vtkCPProcessor? - it should be quite straightforward to do.
Best, Joachim *Joachim Pouderoux* *PhD, Technical Expert* *Kitware SAS <http://www.kitware.fr>* 2016-03-10 16:48 GMT+01:00 Andy Bauer <[email protected]>: > Hi Yohann, > > Thanks for the info! > > If you get some interesting results it would be great if you could share > it. We've recently created some highlighted applications that use Catalyst > at http://www.paraview.org/catalyst-adaptors/. If you'd like to have a > section there on elsA, I'd be more than happy to add it in. > > Best, > Andy > > On Thu, Mar 10, 2016 at 5:37 AM, VAUTRIN Yohann (SAFRAN) < > [email protected]> wrote: > >> Hi Andy, >> >> >> >> I’m using elsA, a CFD package developed by ONERA in France. I was given a >> few links by the project manager if you want more information about the >> software: >> >> • An Overview of the Multi-Purpose elsA Flow Solver ( >> http://www.aerospacelab-journal.org/sites/www.aerospacelab-journal.org/files/AL2-10.pdf >> ) >> >> • Advanced Aerodynamic Applications with the elsA Software ( >> http://www.aerospacelab-journal.org/sites/www.aerospacelab-journal.org/files/AL2-12.pdf >> ) >> >> • The Onera elsA CFD software : input from research and >> feedback from industry - L. Cambier, S. Heib, S. Plot - Mechanics & >> Industry, 2013 >> >> >> >> elsA is written in C++ (plus some Fortran routines) but possesses a user >> interface in Python. I’m using a mechanism in the code that calls a Python >> script when the internal finish state machine changes state (e.g.: at each >> increment, before the computation, at the end, …). >> >> >> >> Hope that answers your question. Let me know if you want more information >> ;). >> >> >> >> >> >> Yohann >> >> >> >> *From:* Andy Bauer [mailto:[email protected]] >> *Sent:* Wednesday, March 09, 2016 4:41 PM >> >> *To:* VAUTRIN Yohann (SAFRAN) >> *Cc:* [email protected] >> *Subject:* Re: [Paraview] [Catalyst] Setting the MPI Comm in Python >> >> >> >> Hi Yohann, >> >> Glad to hear that you were able to get it working! By the way, what >> simulation code are you instrumenting to use Catalyst if you don't mind >> saying? I'd be interested to know how it works for you. >> >> Best, >> >> Andy >> >> >> >> On Wed, Mar 9, 2016 at 5:34 AM, VAUTRIN Yohann (SAFRAN) < >> [email protected]> wrote: >> >> Hi Andy, >> >> >> >> Thank you for your feedback, it helped me solve my problem. >> >> >> >> If anyone is having a similar problem, what I ended up doing is: >> >> *import mpi4py.MPI as MPI* >> >> *import vtk* >> >> *comm = MPI.COMM_WORLD* >> >> *rank = comm.Get_rank()* >> >> *size = comm.Get_size()* >> >> *in_subcomm = [0,3,6,9] # list of ranks to include in the VTK >> communicator* >> >> *subcomm = comm.Split(1 if rank in in_subcomm else 0,rank)* >> >> *#--- In another part of the program called only by the procs in >> in_subcomm* >> >> *vtkComm = vtk.vtkMPI4PyCommunicator.ConvertToVTK(subcomm)* >> >> *vtkCont = vtk.vtkMPIController()* >> >> *vtkCont.SetCommunicator(vtkComm)* >> >> *vtk.vtkMPIController.SetGlobalController(vtkCont)* >> >> >> >> Due to the way my application works, I had to split the communicator >> myself, i.e. without using CreateSubController() or PartitionController() >> because vtk is loaded only by some procs and not every single one (a >> Mpi_Comm_split operation would therefore be impossible to do). >> >> >> >> >> >> -- >> >> Yohann >> >> >> >> *From:* Andy Bauer [mailto:[email protected]] >> *Sent:* Sunday, March 06, 2016 12:55 PM >> *To:* VAUTRIN Yohann (SAFRAN) >> *Cc:* [email protected] >> *Subject:* Re: [Paraview] [Catalyst] Setting the MPI Comm in Python >> >> >> >> Hi, >> >> Can you use a different controller that has the same MPI processes >> assigned to it? If that works for you, you should be able to just create a >> vtkMPIController and use either CreateSubController() or >> PartitionController() to create one similar to what you want. Note that you >> may need to create two vtkMPIControllers, one that corresponds to >> MPI_COMM_WORLD and one for your partitioning. After you've done that you >> can use the vtkMPIController::SetGlobalController() to have VTK and >> ParaView use that for interprocess communication. >> >> Best, >> >> Andy >> >> >> >> On Fri, Feb 26, 2016 at 10:09 AM, VAUTRIN Yohann (SAFRAN) < >> [email protected]> wrote: >> >> 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. 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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." >> # >> > > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > >
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