potrs_batch_scratchpad_size (Strided Version)
Computes size of scratchpad memory required for
potrs_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 potrs_batch
(Strided Version) function should be able to hold.API
Syntax
namespace oneapi::mkl::lapack {
std::int64_t potrs_batch_scratchpad_size(
cl::sycl::queue &queue,
mkl::uplo uplo,
std::int64_t n,
std::int64_t nrhs,
std::int64_t lda,
std::int64_t stride_a,
std::int64_t ldb,
std::int64_t stride_b,
std::int64_t batch_size)
}
Input Parameters
- queue
- Device queue where calculations will be performed.
- uplo
- Indicates how the input matrix has been factored:If uplo=mkl::uplo::upper, the upper triangleUiofAiis stored, whereAi=UiT*Uifor real data,Ai=UiH*Uifor complex data.If uplo=mkl::uplo::lower, the upper triangleLiofAiis stored, whereAi=Li*LiTfor real data,Ai=Li*LiHfor complex data.
- n
- The order of the matricesAi(0 ≤ n).
- nrhs
- The number of right hand sides(0≤nrhs).
- lda
- The leading dimension ofAi.
- stride_a
- The stride between the beginnings of matrices inside the batch arraya.
- ldb
- The leading dimensions ofBi.
- stride_b
- The stride between the beginnings of matricesBiinside the batch arrayb.
- batch_size
- Specifies the number of problems in a batch.
Exceptions
Exception | Description |
---|---|
mkl::lapack::exception | 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 potrs_batch
(Strided Version) function should be able to hold.