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36 /*! \libinternal \file
38 * \brief Convenience wrappers for broadcasting structs.
40 * \author Mark Abraham <mark.j.abraham@gmail.com>
43 * \ingroup module_mdlib
45 #ifndef GMX_MDLIB_BROADCASTSTRUCTS_H
46 #define GMX_MDLIB_BROADCASTSTRUCTS_H
50 #include "gromacs/gmxlib/network.h"
51 #include "gromacs/mdtypes/commrec.h"
52 #include "gromacs/utility/arrayref.h"
53 #include "gromacs/utility/smalloc.h"
58 struct PartialDeserializedTprFile;
61 //! Convenience wrapper for gmx_bcast of a single value.
63 void block_bc(const t_commrec* cr, T& data)
65 gmx_bcast(sizeof(T), static_cast<void*>(&data), cr);
67 //! Convenience wrapper for gmx_bcast of a C-style array.
69 void nblock_bc(const t_commrec* cr, int numElements, T* data)
71 gmx_bcast(numElements * sizeof(T), static_cast<void*>(data), cr);
73 //! Convenience wrapper for gmx_bcast of an ArrayRef<T>
75 void nblock_bc(const t_commrec* cr, gmx::ArrayRef<T> data)
77 gmx_bcast(data.size() * sizeof(T), static_cast<void*>(data.data()), cr);
79 //! Convenience wrapper for allocation with snew of vectors that need allocation on non-master ranks.
81 void snew_bc(const t_commrec* cr, T*& data, int numElements)
85 snew(data, numElements);
88 //! Convenience wrapper for gmx_bcast of a C-style array which needs allocation on non-master ranks.
90 void nblock_abc(const t_commrec* cr, int numElements, T** v)
92 snew_bc(cr, v, numElements);
93 nblock_bc(cr, numElements, *v);
95 //! Convenience wrapper for gmx_bcast of a std::vector which needs resizing on non-master ranks.
97 void nblock_abc(const t_commrec* cr, int numElements, std::vector<T>* v)
101 v->resize(numElements);
103 gmx_bcast(numElements * sizeof(T), v->data(), cr);
106 //! \brief Broadcasts the, non-dynamic, state from the master to all ranks in cr->mpi_comm_mygroup
108 // This is intended to be used with MPI parallelization without
109 // domain decompostion (currently with NM and TPI).
110 void broadcastStateWithoutDynamics(const t_commrec* cr, t_state* state);
112 //! \brief Broadcast inputrec and mtop and allocate node-specific settings
113 void init_parallel(t_commrec* cr,
114 t_inputrec* inputrec,
116 PartialDeserializedTprFile* partialDeserializedTpr);