gels_scratchpad_size#
Computes size of the scratchpad memory required for the gels (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 gels (USM version) function must be
able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
template<typename T>
int64_t gels_scratchpad_size(sycl::queue &queue,
mkl::transpose trans,
int64_t m,
int64_t n,
int64_t nrhs,
int64_t lda,
int64_t ldb)
}
Input Parameters#
- queue
Device queue where calculations by the gels (USM version) function will be performed.
- trans
If
trans=mkl::transpose::trans, the routine finds the minimum norm solution the underdetermined systemAT*X``=``B.If
trans=mkl::transpose::conjtrans, the routine finds the minimum norm solution the underdetermined systemAH*X``=``B.If
trans=mkl::transpose::nontrans, the routine solves the least squares problemminimize || B - A*X ||.- m
The number of rows in the matrix
A(m ≥ 0).- n
The number of columns in the matrix
A(n ≥ 0).- nrhs
The number of right hand sides, i.e. the columns of
b(nrhs ≥ 0)- lda
The leading dimension of
a(lda ≥ max(1,m)).- ldb
The leading dimension of
b(ldb ≥ max(1, max(m,n))).
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 gels (USM version) function must be
able to hold.