orgqr_batch_scratchpad_size (Group Version)#
Computes size of scratchpad memory required for orgqr_batch (Group 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 orgqr_batch (Group Version) function must be able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
int64_t orgqr_batch_scratchpad_size(sycl::queue &queue,
int64_t *m,
int64_t *n,
int64_t *k,
int64_t *lda,
int64_t group_count,
int64_t *group_sizes)
}
This function supports the following precisions and devices:
T |
Devices supported |
|---|---|
|
CPU and GPU |
|
CPU and GPU |
Input Parameters#
- queue
Device queue where calculations will be performed.
- m
Array of
group_countparametersmg as previously supplied to geqrf_batch (Group Version) (mg ≥ 0).- n
Array of
group_countparametersng as previously supplied to geqrf_batch (Group Version) (ng ≥ 0).- k
Array of
group_countparameterskg.The number of elementary reflectors whose product defines the matrices
Qi (0 ≤kg≤ng).- lda
The leading dimension of
Ai as previously supplied to geqrf_batch (Group Version) (ldag ≥max(1, mg)).- group_count
Specifies the number of groups of parameters. Must be at least 0.
- group_sizes
Array of
group_countintegers. Array element with indexgspecifies the number of problems to solve for each of the groups of parametersg. So the total number of problems to solve,batch_size, is a sum of all parameter group sizes.
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 orgqr_batch (Group Version) function must be able to hold.