ormtr_scratchpad

Intel® oneAPI Math Kernel Library (oneMKL) - Data Parallel C++ Developer Reference

Download

ID 772045

Date 12/16/2022

Version

Public

A newer version of this document is available. Customers should click here to go to the newest version.

Visible to Intel only — GUID: GUID-3D4E3403-8FD1-4C05-8CC4-19D7E77A1E04

View Details

ormtr_scratchpad_size

Computes size of scratchpad memory required for ormtr (USM 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 ormtr (buffer or USM version) function must be able to hold.

API

Syntax

namespace oneapi::mkl::lapack {
  template<typename T>
  std::int64_t ormtr_scratchpad_size(sycl::queue &queue,
  mkl::side side,
  mkl::uplo uplo,
  mkl::transpose trans,
  std::int64_t m,
  std::int64_t n,
  std::int64_t lda,
  std::int64_t ldc)
}

Input Parameters

In the descriptions below, r denotes the order of Q:

`r = m`	if `side = side::left`
`r = n`	if `side = side::right`

queue

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

side

Must be either side::left or side::right.

If side = side::left, Q or Q^T is applied to C from the left.

If side = side::right, Q or Q^T is applied to C from the right.

uplo

Must be either uplo::upper or uplo::lower. Uses the same uplo as supplied to sytrd (USM Version).

trans

Must be either transpose::nontrans or transpose::trans.

If trans = transpose::nontrans, the routine multiplies C by Q.

If trans = transpose::trans, the routine multiplies C by Q^T.

m

The number of rows in the matrix C(m ≥ 0).

n

The number of columns in the matrix C(n ≥ 0).

lda

The leading dimension of a(max(1, r) ≤ lda).

ldc

The leading dimension of c(max(1, n) ≤ ldc).

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 ormtr (buffer or USM version) function must be able to hold.

Did you find the information on this page useful?

Yes

How could we improve the page?

Characters remaining:

Feedback Message

Select Your Region

Asia Pacific

Europe

Latin America

Middle East/Africa

North America

Using Intel.com Search

Quick Links

Recent Searches

Advanced Search

Only search in

Intel® oneAPI Math Kernel Library (oneMKL) - Data Parallel C++ Developer Reference

ormtr_scratchpad_size

Description

API

Using Intel.com Search

Quick Links

Recent Searches

Advanced Search

Only search in

Intel® oneAPI Math Kernel Library (oneMKL) - Data Parallel C++ Developer Reference

ormtr_scratchpad_size

Description

API

Give Feedback