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Missing all_reduce in place operation #12

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Wentzell opened this issue Jun 5, 2023 · 1 comment

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Wentzell commented Jun 5, 2023

There is currently no all_reduce in-place operation implemented.

This would be very useful to add to avoid large copies.

Wentzell added the enhancement label

Wentzell changed the title ~~Feature request~~ Missing all_reduce in place operation

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hmenke commented Oct 28, 2023

mpi/c++/mpi/mpi.hpp

Lines 250 to 252 in a36a0b5

    
           template <typename T> [[gnu::always_inline]] inline void all_reduce_in_place(T &&x, communicator c = {}, MPI_Op op = MPI_SUM) { 
        
             reduce_in_place(std::forward<T>(x), c, 0, true, op); 
        
           }

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