gesv_scratchpad_size

Computes size of scratchpad memory required for gesv (USM Version) function. This routine belongs to the oneapi::mkl::lapack namespace.

Description

Computes the number of elements of type T the scratchpad memory to be passed to the gesv (buffer or USM version) function must be able to hold.

API

Syntax

namespace oneapi::mkl::lapack {
  template<typename T>
  std::int64_t gesv_scratchpad_size(sycl::queue &queue,
  mkl::transpose trans,
  std::int64_t n,
  std::int64_t nrhs,
  std::int64_t lda,
  std::int64_t ldb)
}

Input Parameters

queue

Device queue where calculations by the gesv (buffer or USM version) function will be performed.

n

The order of the matrix A and the number of rows in matrix B(0 n).

nrhs

The number of right-hand sides (0 nrhs).

lda

The leading dimension of a.

ldb

The leading dimension of b.

Exceptions

Exception

Description

mkl::lapack::exception

This exception is thrown when an incorrect argument value is supplied. You can determine the position of the incorrect argument by the info() method of the exception object.

Return Values

The number of elements of type T the scratchpad memory to be passed to the gesv (buffer or USM version) function must be able to hold.