potrf_batch_scratchpad_size (Strided Version)
Computes size of scratchpad memory required for
potrf_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 potrf_batch
(Strided Version) function should be able to hold.API
Syntax
namespace oneapi::mkl::lapack {
std::int64_t potrf_batch_scratchpad_size(cl::sycl::queue &queue,
mkl::uplo uplo,
std::int64_t n,
std::int64_t lda,
std::int64_t stride_a,
std::int64_t batch_size)
}
Input Parameters
- queue
- Device queue where calculations will be performed.
- uplo
- Indicates whether the upper or lower triangular part ofAiis stored and howAiis factored:If uplo = mkl::uplo::upper, the arrayastores the upper triangular parts of the matricesAi.If uplo = mkl::uplo::lower, the arrayastores the lower triangular parts of the matricesAi.
- n
- Specifies the order of the matricesAi, (0 ≤ n).
- lda
- The leading dimension ofAi.
- stride_a
- The stride between the beginnings of matricesAiinside the batch.
- 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 potrf_batch
(Strided Version) function should be able to hold.