gels_batch_scratchpad_size (Strided Version)

oneMKL - Data Parallel C++ Developer Reference

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ID 772045

Date 3/31/2025

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gels_batch_scratchpad_size (Strided Version)

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

API

Syntax

 namespace oneapi::mkl::lapack {
   int64_t gels_batch_scratchpad_size(sycl::queue &queue,
   mkl::transpose trans,
   int64_t m,
   int64_t n,
   int64_t nrhs,
   int64_t lda,
   int64_t stride_a,
   int64_t ldb,
   int64_t stride_b,
   int64_t batch_size)
}

Input Parameters

queue: Device queue where calculations will be performed.
trans: Operation assumed to be done on input matrices A_i. Only trans = mkl::transpose::nontrans case is currently supported.
m: The number of rows of the matrices A_i and B_i (m ≥ 0).
n: The number of columns of the matrices A_i (n ≥ 0).
nrhs: The number of right-hand sides: the number of columns in B_i (nrhs ≥ 0).
lda: The leading dimension of A_i (lda ≥ max(1,m)).
stride_a: The stride between the beginnings of matrices A_i inside the batch array a (stride_a ≥ max(1, lda * n)).
ldb: The leading dimensions of B_i (ldb ≥ max(1,max(m,n))).
stride_b: The stride between the beginnings of matrices B_i inside the batch array b (stride_b ≥ max(1, ldb * nrhs)).
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 gels_batch (Strided Version) function must be able to hold.

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oneMKL - Data Parallel C++ Developer Reference

gels_batch_scratchpad_size (Strided Version)

Description

API