getri_batch_scratchpad_size (Strided Version)

oneMKL - Data Parallel C++ Developer Reference

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ID 772045

Date 7/13/2023

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getri_batch_scratchpad_size (Strided Version)

Computes size of scratchpad memory required for getri_batch (Out-of-place, Strided Version) function. This routine belongs to the oneapi::mkl::lapack namespace.

Description
API

Description

Computes the number of elements of type T the scratchpad memory to be passed to the getri_batch (Out-of-place, Strided Version) function should be able to hold.

API

Syntax

namespace oneapi::mkl::lapack {
  std::int64_t getri_batch_scratchpad_size(sycl::queue &queue,
  std::int64_t n,
  std::int64_t lda,
  std::int64_t stride_a,
  std::int64_t stride_ipiv,
  std::int64_t ldainv,
  std::int64_t stride_ainv,
  std::int64_t batch_size)
}

Input Parameters

queue: Device queue where calculations will be performed.
n: The order of the matrices A_i (n ≥ 0).
lda: The leading dimension of A_i (lda ≥ max(1, n)).
stride_a: The stride between the beginnings of matrices A_i inside the batch array a (stride_a ≥ max(1, lda * n)).
stride_ipiv: The stride between the beginnings of arrays ipiv_i inside the array ipiv (stride_ipiv ≥ max(1, n)).
ldainv: The leading dimension of Ainv_i (ldainv ≥ max(1, n)).
stride_ainv: The stride between the beginnings of matrices Ainv_i inside the batch array ainv (stride_ainv ≥ max(1, ldainv * n)).
batch_size: The number of problems in a batch (batch_size ≥ 0).

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 getri_batch (Out-of-place, Strided Version) function should be able to hold.

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oneMKL - Data Parallel C++ Developer Reference

getri_batch_scratchpad_size (Strided Version)

Description

API