How to communicate std::vector<> across processor boundaries
 

Hello,

I am running a solver in parallel in OpenFOAM. in this solver I compiled the subgrid combustion model (which is not written in OpenFOAM and uses standard C++ library) with OpenFOAM.
On the faces between processor boundaries I want to read and make a local copy of std::vector<double> (contained in the subgrid combustion model on other processor). How can I do that?

Any help is highly appreciated.Thanks a lot:)

std::vector<double>
 

Hi there Saloo,

Well, I saw your PM message, but it wasn't very clear what you are trying to do.

First of all, I recommend you try to convert your data type to a standard OpenFOAM type, to make things easier.

Then, if what you are trying to do is access/store your data on many processors, you can try to access the global object database as explained here. Look a bit lower in the post, I think I explained some other things there too.

You can also find more information about inter-processor communication here.

And a short intro to the reduce operation.

You might also want to look through the posts I've made, I might have skipped a few here which could be important for you. Come back to me once you've done that.

Good luck!

Find the duplicate points on different processor boundaries
 

Hello,

Sorry for using this thread to ask a related question. Given a point P on a processor boundary (say processor1to2), is it possible to find the information about the duplicated point of this point P on the other processor boundary (which is procssor2to1) ? Is the order of points and faces the same on these two processor boundaries ?

I am working on dynamic mesh moving in parallel and I have to make sure that the displacements of the duplicated points on different processor boundaries are the same in order to avoid the face match problems. Thanks for any help !

Best regards!

Lu ZHOU