Computes size of scratchpad memory required for potrf_batch (Group Version) function. This routine belongs to the mkl::lapack namespace.
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 group_count, std::int64_t *group_sizes)
Function supports the following precisions and devices.
T | Devices supported |
---|---|
float | Host, CPU, and GPU |
double | Host, CPU, and GPU |
std::complex<float> | Host, CPU, and GPU |
std::complex<double> | Host, CPU, and GPU |
Computes the number of elements of type T the scratchpad memory to be passed to the potrf_batch (Group Version) function should be able to hold.
Device queue where calculations will be performed.
Array of group_count parameters uplog.
Each of uplog indicates whether the upper or lower triangular parts of the input matrices are provided.
If uplog=mkl::uplo::upper, input matrices from array a belonging to group g store the upper triangular parts.
If uplog=mkl::uplo::lower, input matrices from array a belonging to group g store the lower triangular parts.
Array of group_countng parameters.
Each ng specifies the order of the input matrices belonging to group g.
Array of group_count parameters ldag.
Each ldag specifies the leading dimension of the matrices belonging to group g.
Specifies the number of groups of parameters. Must be at least 0.
Array of group_count integers. Array element with index g specifies the number of problems to solve for each of the groups of parameters g. So the total number of problems to solve, batch_size, is a sum of all parameter group sizes.
Exceptions
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. |
The number of elements of type T the scratchpad memory to be passed to the potrf_batch (Group Version) function should be able to hold.