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Splitting communicators first cut

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paboyle
2017-06-22 08:14:34 +01:00
parent 1d7aa673a4
commit 6ebf9f15b7
34 changed files with 215 additions and 65 deletions
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18
lib/communicator/Communicator_base.h
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@ -68,6 +68,7 @@ class CartesianCommunicator {
static MPI_Comm communicator_world;
MPI_Comm communicator;
typedef MPI_Request CommsRequest_t;
#else
typedef int CommsRequest_t;
#endif
@ -135,11 +136,24 @@ class CartesianCommunicator {
// Must call in Grid startup
////////////////////////////////////////////////
static void Init(int *argc, char ***argv);
////////////////////////////////////////////////
// Constructor of any given grid
// Constructors to sub-divide a parent communicator
// and default to comm world
////////////////////////////////////////////////
CartesianCommunicator(const std::vector<int> &processors,const CartesianCommunicator &parent);
CartesianCommunicator(const std::vector<int> &pdimensions_in);
private:
#if defined (GRID_COMMS_MPI)
//|| defined (GRID_COMMS_MPI3)
////////////////////////////////////////////////
// Private initialise from an MPI communicator
// Can use after an MPI_Comm_split, but hidden from user so private
////////////////////////////////////////////////
void InitFromMPICommunicator(const std::vector<int> &processors, MPI_Comm communicator_base);
#endif
public:
////////////////////////////////////////////////////////////////////////////////////////
// Wraps MPI_Cart routines, or implements equivalent on other impls