gesvda_batch_scratchpad_size (Strided Version)

oneMKL - Data Parallel C++ Developer Reference

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ID 772045

Date 6/24/2024

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gesvda_batch_scratchpad_size (Strided Version)

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

API

Syntax

 namespace oneapi::mkl::lapack {
   std::int64_t gesvda_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 ldu,
   std::int64_t stride_u,
   std::int64_t ldvt,
   std::int64_t stride_vt,
   std::int64_t batch_size)
}

Input Parameters

queue: Device queue where calculations will be performed.
m: The number of rows in the matrices A_i.
n: The number of columns in the matrices A_i.
lda: The leading dimension of a. Must be at least max(1, m).
stride_a: The stride between the beginnings of matrices A_i inside the batch array a. Must be at least max(1, lda * n).
stride_s: The stride between the beginnings of arrays S_i inside the array s. Must be at least min(m,n).
ldu: The leading dimension of U_i. Must be at least max(1, m).
stride_u: The stride between the beginnings of matrices U_i inside the batch array u. Must be at least max(1, ldu * m).
ldvt: The leading dimension of V_i^T . Must be at least max(1, n).
stride_vt: The stride between the beginnings of matrices V_i^Tinside the batch array vt. Must be at least max(1, ldvt * n).

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 gesvda_batch (Strided Version) function must be able to hold.

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gesvda_batch_scratchpad_size (Strided Version)

Description

API