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 must be able to hold.
API¶
Syntax¶
namespace oneapi::mkl::lapack {
std::int64_t potrs_batch_scratchpad_size(
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 triangleU
i ofA
i is stored, whereA
i =U
iT*U
i for real data,A
i =U
iH*U
i for complex data.If uplo=
mkl::uplo::lower
, the upper triangleL
i ofA
i is stored, whereA
i =L
i*L
iT for real data,A
i =L
i*L
iH for complex data.- n
The order of the matrices
A
i (0 ≤ n
).- nrhs
The number of right hand sides
(0 ≤ nrhs)
.- lda
The leading dimension of
A
i.- stride_a
The stride between the beginnings of matrices inside the batch array
a
.- ldb
The leading dimensions of
B
i.- stride_b
The stride between the beginnings of matrices
B
i inside the batch arrayb
.- batch_size
The number of problems in a batch.
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 |
Return Values¶
The number of elements of type T
the scratchpad memory to be passed to the potrs_batch
(Strided Version) function must be able to hold.