Visible to Intel only — GUID: GUID-20E260D4-BC6E-4149-8ADC-5BFD809C152A
Visible to Intel only — GUID: GUID-20E260D4-BC6E-4149-8ADC-5BFD809C152A
potrs_scratchpad_size
Computes size of scratchpad memory required for potrs (USM 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 (buffer or USM version) function must be able to hold.
API
Syntax
namespace oneapi::mkl::lapack { template<typename T> std::int64_t potrs_scratchpad_size( sycl::queue &queue, mkl::uplo uplo, std::int64_t n, std::int64_t nrhs, std::int64_t lda, std::int64_t ldb) }
Input Parameters
- queue
-
Device queue where calculations by the potrs (buffer or USM version) function will be performed.
- uplo
-
Indicates how the input matrix has been factored:
If uplo=mkl::uplo::upper, the upper triangle U of A is stored, where A = UT*U for real data, A = UH*U for complex data.
If uplo=mkl::uplo::lower, the upper triangle L of A is stored, where A = L*LT for real data, A = L*LH for complex data.
- n
-
The order of matrix A (0 ≤ n).
- nrhs
-
The number of right-hand sides (0 ≤ nrhs).
- lda
-
The leading dimension of A.
- ldb
-
The leading dimension of B.
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 (buffer or USM version) function must be able to hold.