cuquantum.custatevec.apply_matrix_buffer_size¶

cuquantum.custatevec.apply_matrix_buffer_size(intptr_t handle, int sv_data_type, uint32_t n_index_bits, intptr_t matrix, int matrix_data_type, int layout, int32_t adjoint, uint32_t n_targets, uint32_t n_controls, int compute_type) → size_t¶

Computes the required workspace size for apply_matrix().

Parameters

handle (intptr_t) – The library handle.
sv_data_type (cuquantum.cudaDataType) – The data type of the statevector.
n_index_bits (uint32_t) – The number of index bits.
matrix (intptr_t) – The pointer address (as Python int) to a matrix (on either host or device).
matrix_data_type (cuquantum.cudaDataType) – The data type of the matrix.
layout (MatrixLayout) – The memory layout the the matrix.
adjoint (int32_t) – Whether the adjoint of the matrix would be applied.
n_targets (uint32_t) – The length of targets.
n_controls (uint32_t) – The length of controls.
compute_type (cuquantum.ComputeType) – The compute type of matrix multiplication.

Returns

The required workspace size (in bytes).

Return type

size_t