ungqr_batch_scratchpad_size (Strided Version)#
Computes size of scratchpad memory required for ungqr_batch (Strided
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 ungqr_batch (Strided Version) function must be able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
int64_t ungqr_batch_scratchpad_size(sycl::queue &queue,
int64_t m,
int64_t n,
int64_t k,
int64_t lda,
int64_t stride_a,
int64_t stride_tau,
int64_t batch_size)
}
Input Parameters#
- queue
Device queue where calculations will be performed.
- m
The number of rows in the matrices
Ai (m ≥ 0).- n
The number of columns in the matrices
Ai (n ≥ 0).- k
the number of elementary reflectors whose product defines the matrices
Qi (0 ≤k≤n) .- lda
The leading dimension of
Ai (lda≥max(1,m)).- stride_a
The stride between the beginnings of matrices
Ai inside the batch arraya(stride_a≥max(1, lda * n)).- stride_tau
The stride between the beginnings of arrays
taui inside the arraytau(stride_tau≥max(1, min(m,n))).- batch_size
The number of problems in a batch (
batch_size≥ 0).
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 ungqr_batch (Strided Version) function must be able to hold.