Computes the batch of inverses of an LU-factored general matrices determined by the getrf_batch (Group Version) function. This routine belongs to the mkl::lapack namespace.
cl::sycl::event getri_batch(cl::sycl::queue &queue, std::int64_t *n, T **a, std::int64_t *lda, std::int64_t **ipiv, std::int64_t group_count, std::int64_t *group_sizes, T *scratchpad, std::int64_t scratchpad_size, const cl::sycl::vector_class<cl::sycl::event> &events = {})
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 |
The routine computes the inverses A1-1 of a general matrices A1, iϵ{1...batch_size}. Before calling this routine, call getrf_batch (Group Version) function to factorize A1.
Total number of problems to solve, batch_size, is a sum of sizes of all of the groups of parameters as provided by group_sizes array.
Device queue where calculations will be performed.
Array of group_count parameters ng specifying the order of the matrices Ai (0 ≤ ng) belonging to group g.
Result of the getrf_batch (Group Version) function
Array of group_count parameters ldag specifying the leading dimension of Ai (ng ≤ ldag) belonging to group g.
The array as returned by getrf_batch (Group Version).
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.
Scratchpad memory to be used by routine for storing intermediate results.
Size of scratchpad memory as a number of floating point elements of type T. Size should not be less then the value returned by getri_batch_scratchpad_size.
List of events to wait for before starting computation. Defaults to empty list.
Overwritten by the ng-by-ng matrices Ai-1.
Exceptions
mkl::lapack::batch_exception |
This exception is thrown when problems occur during calculations. You can obtain the info code of the problem using the info() method of the exception object: If info = -n, the n-th parameter had an illegal value. If info equals the value passed as scratchpad size, and detail() returns non-zero, then the passed scratchpad is of insufficient size, and the required size should be not less then value returned by the detail() method of the exception object. |
Output event to wait on to ensure computation is complete.