getrs_batch_scratchpad_size (Strided Version)¶
Computes size of scratchpad memory required for getrs_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 getrs_batch
(Strided Version) function must be able to hold.
API¶
Syntax¶
namespace oneapi::mkl::lapack {
std::int64_t getrs_batch_scratchpad_size(sycl::queue &queue,
mkl::transpose trans,
std::int64_t n,
std::int64_t nrhs,
std::int64_t lda,
std::int64_t stride_a,
std::int64_t stride_ipiv,
std::int64_t ldb,
std::int64_t stride_b,
std::int64_t batch_size)
}
Input Parameters¶
- queue
Device queue where calculations will be performed.
- trans
Indicates the form of the equations:
If trans = mkl::transpose::nontrans, then
A
i*X
i =B
i is solved forX
i.If trans = mkl::transpose::trans, then
A
iT*X
i =B
i is solved forX
i.If trans = mkl::transpose::conjtrans, then
A
iH*X
i =B
i is solved forX
i.- n
The order of the matrices
A
i and the number of rows in matricesB
i (n ≥ 0
).- nrhs
The number of right hand sides
(nrhs ≥ 0)
.- lda
The leading dimension of
A
i (lda
≥max(1, n)
).- stride_a
The stride between the beginnings of matrices
A
i inside the batch arraya
(stride_a
≥max(1, lda * n)
).- stride_ipiv
The stride between the beginnings of arrays
ipiv
i inside the arrayipiv
(stride_ipiv
≥max(1, n)
).- ldb
The leading dimensions of
B
i (ldb
≥max(1, n)
).- stride_b
The stride between the beginnings of matrices
B
i inside the batch arrayb
(stride_b
≥max(1, ldb * nrhs)
).- batch_size
The number of problems in a batch (
batch_size
≥ 0).
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
(Strided Version) function must be able to hold.