Template Function Pennylane::LightningGPU::MPI::splitCSRMatrix

• Defined in File CSRMatrix.hpp

Function Documentation

template<class Precision, class index_type>
auto Pennylane::LightningGPU::MPI::splitCSRMatrix(MPIManager &mpi_manager, const size_t &num_rows, const index_type *csrOffsets_ptr, const index_type *columns_ptr, const std::complex<Precision> *values_ptr) -> std::vector<std::vector<CSRMatrix<Precision, index_type>>>

Convert a global CSR (Compressed Sparse Row) format matrix into local blocks. This operation should be conducted on the rank 0.

Template Parameters

• Precision – Floating-point precision type.

• index_type – Integer type used as indices of the sparse matrix.

Parameters

• mpi_manager – MPIManager object.

• num_rows – Number of rows of the CSR matrix.

• csrOffsets_ptr – Pointer to the array of row offsets of the sparse matrix. Array of size csrOffsets_size.

• columns_ptr – Pointer to the array of column indices of the sparse matrix. Array of size numNNZ

• values_ptr – Pointer to the array of the non-zero elements

Returns

auto A vector of vector of CSRMatrix.

api/function_CSRMatrix_8hpp_1a95a86bf700e73e47b1f4076723215f29

 

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