geqrf_batch_scratchpad_size (Strided Version)

Computes size of scratchpad memory required for geqrf_batch (Strided 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 geqrf_batch (Strided Version) function should be able to hold.

API

Syntax

namespace oneapi::mkl::lapack {
  geqrf_batch_scratchpad_size(sycl::queue &queue,
  std::int64_t m,
  std::int64_t n,
  std::int64_t lda,
  std::int64_t stride_a,
  std::int64_t stride_tau,
  std::int64_t batch_size)
}

Input Parameters

queue

Device queue where calculations will be performed.

m

The number of rows in the matrices Ai (0 m).

n

The number of columns in the matrices Ai (0 n).

lda

The leading dimension of Ai .

stride_a

The stride between the beginnings of matrices Ai inside the batch array a.

stride_tau

The stride between the beginnings of arrays taui inside the array tau.

batch_size

The number of problems in a batch.

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 geqrf_batch (Strided Version) function should be able to hold.