Computes the batch of inverses of an LU-factored general matrices determined by getrf_batch (USM stride 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 stride_a, std::int64_t *ipiv, std::int64_t stride_ipiv, std::int64_t batch_size, 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. Before calling this routine, call getrf_batch (USM Strided Version) function to factorize A1.
Device queue where calculations will be performed.
The order of the matrices Ai (0 ≤ n).
Result of the getrf_batch (USM Strided Version) function
The leading dimension of Ai (n ≤ lda).
The stride between the beginnings of matrices Ai inside the batch array a.
The array as returned by getrf_batch (USM Strided Version).
The stride between the beginnings of arrays ipivi inside the array ipiv.
Specifies the number of problems in a batch.
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 than the value returned by stride version of getri_batch_scratchpad_size (Strided Version) function.
List of events to wait for before starting computation. Defaults to empty list.
Overwritten by the n-by-n 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.