sytrf_scratchpad_size#
Computes size of scratchpad memory required for sytrf (USM 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 sytrf (buffer or USM version) function must be able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
template<typename T>
int64_t sytrf_scratchpad_size(sycl::queue &queue,
mkl::uplo uplo,
int64_t n,
int64_t lda)
}
Input Parameters#
- queue
Device queue where calculations by the sytrf (buffer or USM version) function will be performed.
- uplo
Indicates whether the upper or lower triangular part of
Ais stored and howAis factored:If
uplo = uplo::upper, the arrayastores the upper triangular part of the matrixA, andAis factored asU*D*UT.If
uplo = uplo::lower, the arrayastores the lower triangular part of the matrixA, andAis factored asL*D*LT.- n
The order of the matrix
A(0 ≤ n).- lda
The leading dimension of
a.
Exceptions#
Exception |
Description |
|---|---|
|
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 sytrf (buffer or USM version) function must be able to hold.