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oneapi::mkl::sparse::optimize_gemv

Performs internal optimizations for oneapi::mkl::sparse::gemv by analyzing the matrix structure.

Description

Note

Refer to Exceptions for a detailed description of the exceptions thrown.

The oneapi::mkl::sparse::optimize_gemv routine analyzes matrix structure and performs optimizations. Optimized data is then stored in the matrix handle.

API

Syntax

Note

Currently, complex types are not supported.

Using SYCL buffers:

namespace oneapi::mkl::sparse {
    void optimize_gemv (
        cl::sycl::queue &queue,
        oneapi::mkl::transpose transpose_flag,
        oneapi::mkl::sparse::matrix_handle_t handle)
}

Using USM pointers:

Note

Currently, the USM API might be a blocking call.

namespace oneapi::mkl::sparse {
    cl::sycl::event optimize_gemv (
        cl::sycl::queue &queue,
        oneapi::mkl::transpose transpose_flag,
        oneapi::mkl::sparse::matrix_handle_t handle,
        const std::vector<cl::sycl::event> &dependencies)
}

Include Files

  • oneapi/mkl/spblas.hpp

Input Parameters

queue

Specifies the SYCL command queue which will be used for SYCL kernels execution.

transpose_flag

Specifies operation op() on input matrix.

oneapi::mkl::transpose::nontrans

Non-transpose, op(A) = A.

oneapi::mkl::transpose::trans

Transpose, op(A) = AT.

oneapi::mkl::transpose::conjtrans

Conjugate transpose, op(A) = AH.

Note

Currently, the only supported case for operation is oneapi::mkl::transpose::nontrans.

handle

Handle to object containing sparse matrix and other internal data. Created using one of the oneapi::mkl::sparse::set_<sparse_matrix_type>_data routines.

Note

Currently, the only supported case for <sparse_matrix_type> is csr.

dependencies

A vector of type std::vector<cl::sycl::event> containing the list of events that the oneapi::mkl::sparse::optimize_gemv routine depends on.

Return Values (USM Only)

cl::sycl::event

SYCL event which can be waited upon or added as a dependency for the completion of the optimize_gemv routine.

oneapi::mkl::sparse::set_csr_data oneapi::mkl::sparse::optimize_trmv