exchanges.hpp File Reference

#include "shambase/narrowing.hpp"
#include "shambase/stacktrace.hpp"
#include "shamalgs/collective/are_all_rank_true.hpp"
#include "shambackends/SyclMpiTypes.hpp"
#include "shambackends/typeAliasVec.hpp"
#include "shamcomm/logs.hpp"
#include "shamcomm/mpi.hpp"
#include "shamcomm/mpiErrorCheck.hpp"
#include "shamcomm/worldInfo.hpp"
#include "shamcomm/wrapper.hpp"
#include <numeric>
#include <vector>

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Namespaces
namespace	shamalgs
	namespace to contain everything implemented by shamalgs

Functions
template<class T >
void	shamalgs::collective::vector_allgatherv_ks (const std::vector< T > &send_vec, const MPI_Datatype send_type, std::vector< T > &recv_vec, const MPI_Datatype recv_type, const MPI_Comm comm)
	allgatherv with knowing total count of object //TODO add fault tolerance
template<class T >
std::vector< int >	shamalgs::collective::vector_allgatherv (const std::vector< T > &send_vec, const MPI_Datatype &send_type, std::vector< T > &recv_vec, const MPI_Datatype &recv_type, const MPI_Comm comm)
	allgatherv on vector with size query (size querying variant of vector_allgatherv_ks) //TODO add fault tolerance
template<class T >
void	shamalgs::collective::vector_allgatherv_large (const std::vector< T > &send_vec, const MPI_Datatype &send_type, std::vector< T > &recv_vec, const MPI_Datatype &recv_type, const MPI_Comm comm, u32 com_per_step=(1_i32<< 29)/static_cast< u32 >(shamcomm::world_size()))
	vector_allgatherv version that support having more than 2^31 elements in flight
template<class T >
void	shamalgs::collective::vector_allgatherv (const std::vector< T > &send_vec, std::vector< T > &recv_vec, const MPI_Comm comm)
	Simplified allgatherv wrapper using default MPI type.

Detailed Description

Author

Timothée David–Cléris (tim.s.nosp@m.hamr.nosp@m.ock@p.nosp@m.roto.nosp@m.n.me)

Definition in file exchanges.hpp.

Function Documentation

vector_allgatherv() [1/2]

template<class T >

std::vector< int > shamalgs::collective::vector_allgatherv ( const std::vector< T > &  send_vec, const MPI_Datatype &  send_type, std::vector< T > &  recv_vec, const MPI_Datatype &  recv_type, const MPI_Comm  comm  )

inline

allgatherv on vector with size query (size querying variant of vector_allgatherv_ks) //TODO add fault tolerance

Template Parameters

T

Parameters

send_vec
send_type
recv_vec
recv_type

Returns

the node displacements data table

Definition at line 98 of file exchanges.hpp.

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vector_allgatherv() [2/2]

template<class T >

void shamalgs::collective::vector_allgatherv ( const std::vector< T > &  send_vec, std::vector< T > &  recv_vec, const MPI_Comm  comm  )

inline

Simplified allgatherv wrapper using default MPI type.

Template Parameters

T	Type of elements to gather

Parameters

send_vec	Vector to send from this rank
recv_vec	Vector to receive all gathered data
comm	MPI communicator

Definition at line 227 of file exchanges.hpp.

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vector_allgatherv_ks()

template<class T >

void shamalgs::collective::vector_allgatherv_ks ( const std::vector< T > &  send_vec, const MPI_Datatype  send_type, std::vector< T > &  recv_vec, const MPI_Datatype  recv_type, const MPI_Comm  comm  )

inline

allgatherv with knowing total count of object //TODO add fault tolerance

Template Parameters

T

Parameters

send_vec
send_type
recv_vec
recv_type

Definition at line 44 of file exchanges.hpp.

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vector_allgatherv_large()

template<class T >

void shamalgs::collective::vector_allgatherv_large ( const std::vector< T > &  send_vec, const MPI_Datatype &  send_type, std::vector< T > &  recv_vec, const MPI_Datatype &  recv_type, const MPI_Comm  comm, u32  com_per_step = (1_i32 << 29) / static_cast<u32>(shamcomm::world_size())  )

inline

vector_allgatherv version that support having more than 2^31 elements in flight

Template Parameters

T

Parameters

send_vec
send_type
recv_vec
recv_type
comm
com_per_step

Definition at line 175 of file exchanges.hpp.

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