Computes size of scratchpad memory required for geqrf_batch (Group Version) function. This routine belongs to the mkl::lapack namespace.
std::int64_t geqrf_batch_scratchpad_size(cl::sycl::queue &queue, std::int64_t *m, 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 geqrf_batch (Group Version) function should be able to hold.
Device queue where calculations will be performed.
Array of group_count parameters mg.
Each mg specifies the number of rows in the matrices Ai belonging to group g.
Array of group_count parameters ng.
Each ng specifies the number of columns in the matrices Ai belonging to group g.
Array of group_count parameters ldag, each representing the leading dimension of input 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 geqrf_batch (Group Version) function should be able to hold.