Visible to Intel only — GUID: GUID-9631F7DC-2E1E-4DF4-8763-8D0718FE841C
Visible to Intel only — GUID: GUID-9631F7DC-2E1E-4DF4-8763-8D0718FE841C
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 must be able to hold.
API
Syntax
namespace oneapi::mkl::lapack {
std::int64_t potrf_batch_scratchpad_size(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 of Ai is stored and how Ai is factored:
If uplo = mkl::uplo::upper, the array a stores the upper triangular parts of the matrices Ai.
If uplo = mkl::uplo::lower, the array a stores the lower triangular parts of the matrices Ai.
- n
-
Specifies the order of the matrices Ai, (n ≥ 0).
- lda
-
The leading dimension of Ai (lda ≥ max(1, n)).
- stride_a
-
The stride between the beginnings of matrices Ai inside the batch (stride_a ≥ max(1, lda * n)).
- batch_size
-
The number of problems in a batch (batch_size ≥ 0).
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 must be able to hold.