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Merge pull request #99 from Adrian-Diaz/Adrian's-Branch
Tpetra distributed multivector vector wrappers + skeleton for future distributed vectors
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| #ifndef COMMUNICATION_PLAN_H | ||
| #define COMMUNICATION_PLAN_H | ||
| /********************************************************************************************** | ||
| © 2020. Triad National Security, LLC. All rights reserved. | ||
| This program was produced under U.S. Government contract 89233218CNA000001 for Los Alamos | ||
| National Laboratory (LANL), which is operated by Triad National Security, LLC for the U.S. | ||
| Department of Energy/National Nuclear Security Administration. All rights in the program are | ||
| reserved by Triad National Security, LLC, and the U.S. Department of Energy/National Nuclear | ||
| Security Administration. The Government is granted for itself and others acting on its behalf a | ||
| nonexclusive, paid-up, irrevocable worldwide license in this material to reproduce, prepare | ||
| derivative works, distribute copies to the public, perform publicly and display publicly, and | ||
| to permit others to do so. | ||
| This program is open source under the BSD-3 License. | ||
| Redistribution and use in source and binary forms, with or without modification, are permitted | ||
| provided that the following conditions are met: | ||
| 1. Redistributions of source code must retain the above copyright notice, this list of | ||
| conditions and the following disclaimer. | ||
| 2. Redistributions in binary form must reproduce the above copyright notice, this list of | ||
| conditions and the following disclaimer in the documentation and/or other materials | ||
| provided with the distribution. | ||
| 3. Neither the name of the copyright holder nor the names of its contributors may be used | ||
| to endorse or promote products derived from this software without specific prior | ||
| written permission. | ||
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | ||
| IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
| PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR | ||
| CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
| EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
| PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | ||
| OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | ||
| WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | ||
| OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | ||
| ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| **********************************************************************************************/ | ||
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| #include "host_types.h" | ||
| #include "kokkos_types.h" | ||
| #include <typeinfo> | ||
| #ifdef HAVE_MPI | ||
| #include <mpi.h> | ||
| #include "partition_map.h" | ||
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| namespace mtr | ||
| { | ||
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| ///////////////////////// | ||
| /* CommunicationPlan: Class storing relevant data and functions to perform comms between two different MATAR MPI types. | ||
| The object for this class should not be reconstructed if the same comm plan is needed repeatedly; the setup is expensive. | ||
| The comms routines such as execute_comms can be called repeatedly to avoid repeated setup of the plan.*/ | ||
| ///////////////////////// | ||
| template <typename T, typename Layout = DefaultLayout, typename ExecSpace = DefaultExecSpace, typename MemoryTraits = void> | ||
| class CommunicationPlan { | ||
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| // this is manage | ||
| using TArray1D = Kokkos::DualView <T*, Layout, ExecSpace, MemoryTraits>; | ||
|
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| protected: | ||
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| public: | ||
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| /*forward comms means communicating data to a vector that doesn't have a unique distribution of its global | ||
| indices amongst processes from a vector that does have a unique distribution amongst processes. | ||
| An example of forward comms in a finite element application would be communicating ghost data from | ||
| the vector of local data. | ||
| reverse comms means communicating data to a vector that has a unique distribution of its global | ||
| indices amongst processes from a vector that does not have a unique distribution amongst processes. | ||
| An example of reverse comms in a finite element application would be communicating force contributions from ghost | ||
| indices via summation to the entries of the uniquely owned vector that stores final tallies of forces. | ||
| */ | ||
| bool reverse_comms_flag; //default is false | ||
|
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| CommunicationPlan(); | ||
|
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| //Copy Constructor | ||
| CommunicationPlan(const CommunicationPlan<T, Layout, ExecSpace,MemoryTraits> &temp){ | ||
| *this = temp; | ||
| } | ||
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| CommunicationPlan(bool reverse_comms); | ||
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| KOKKOS_INLINE_FUNCTION | ||
| CommunicationPlan& operator=(const CommunicationPlan& temp); | ||
|
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| // Deconstructor | ||
| virtual KOKKOS_INLINE_FUNCTION | ||
| ~CommunicationPlan (); | ||
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| virtual execute_comms(){} | ||
| }; // End of CommunicationPlan | ||
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| // Default constructor | ||
| template <typename T, typename Layout, typename ExecSpace, typename MemoryTraits> | ||
| CommunicationPlan<T,Layout,ExecSpace,MemoryTraits>::CommunicationPlan() { | ||
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| } | ||
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| // Overloaded 1D constructor | ||
| template <typename T, typename Layout, typename ExecSpace, typename MemoryTraits> | ||
| CommunicationPlan<T,Layout,ExecSpace,MemoryTraits>::CommunicationPlan(bool reverse_comms) { | ||
| reverse_comms_flag = reverse_comms; | ||
| } | ||
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| template <typename T, typename Layout, typename ExecSpace, typename MemoryTraits> | ||
| KOKKOS_INLINE_FUNCTION | ||
| CommunicationPlan<T,Layout,ExecSpace,MemoryTraits>& CommunicationPlan<T,Layout,ExecSpace,MemoryTraits>::operator= (const CommunicationPlan& temp) { | ||
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| // Do nothing if the assignment is of the form x = x | ||
| if (this != &temp) { | ||
| reverse_comms_flag = reverse_comms_flag; | ||
| } | ||
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| return *this; | ||
| } | ||
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| template <typename T, typename Layout, typename ExecSpace, typename MemoryTraits> | ||
| KOKKOS_INLINE_FUNCTION | ||
| CommunicationPlan<T,Layout,ExecSpace,MemoryTraits>::~CommunicationPlan() {} | ||
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| //////////////////////////////////////////////////////////////////////////////// | ||
| // End of CommunicationPlan | ||
| //////////////////////////////////////////////////////////////////////////////// | ||
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| } // end namespace | ||
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| #endif // end if have MPI | ||
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| #endif // COMMUNICATION_PLAN_H | ||
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