getrs_batch_scratchpad_size (Group Version)#
Computes size of scratchpad memory required for getrs_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 getrs_batch (Group Version) function must be able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
int64_t getrs_batch_scratchpad_size(sycl::queue &queue,
mkl::transpose *trans,
int64_t *n,
int64_t *nrhs,
int64_t *lda,
int64_t *ldb,
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 |
|
CPU and GPU |
|
CPU and GPU |
Input Parameters#
- queue
Device queue where calculations will be performed.
- trans
Array of
group_countparameters transg indicating the form of the equations for the groupg:If trans = mkl::transpose::nontrans, then
Ai*Xi =Bi is solved forXi.If trans = mkl::transpose::trans, then
AiT*Xi =Bi is solved forXi.If trans = mkl::transpose::conjtrans, then
AiH*Xi =Bi is solved forXi.- n
Array of
group_countparametersng specifying the order of the matricesAi and the number of rows in matricesBi belonging to groupg(ng ≥ 0).- nrhs
Array of
group_countparametersnrhsg specifying the number of right hand sides for groupg(nrhsg ≥ 0).- lda
Array of
group_countparametersldag specifying the leading dimension ofAi from groupg(ldag ≥max(1, ng)).- ldb
Array of
group_countparametersldbg specifying the leading dimension ofBi from groupg(ldbg ≥max(1, ng)).- 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 getrs_batch (Group Version) function must be able to hold.