potrs_scratchpad_size#
Computes size of scratchpad memory required for potrs (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 potrs (buffer or USM version) function must be able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
template<typename T>
int64_t potrs_scratchpad_size(
sycl::queue &queue,
mkl::uplo uplo,
int64_t n,
int64_t nrhs,
int64_t lda,
int64_t ldb)
}
Input Parameters#
- queue
Device queue where calculations by the
potrs(buffer or USM version) function will be performed.- uplo
Indicates how the input matrix has been factored:
If uplo=
mkl::uplo::upper, the upper triangleUofAis stored, whereA=UT*Ufor real data,A=UH*Ufor complex data.If uplo=
mkl::uplo::lower, the upper triangleLofAis stored, whereA=L*LT for real data,A=L*LH for complex data.- n
The order of matrix
A(0 ≤n).- nrhs
The number of right-hand sides (0 ≤
nrhs).- lda
The leading dimension of A.
- ldb
The leading dimension of B.
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 |
Return Values#
The number of elements of type T the scratchpad memory to be passed to the potrs (buffer or USM version) function must be able to hold.