geinv_batch (Group Version)#
Computes the batch of inverses of general matrices. This routine belongs to
the oneapi::mkl::lapack
namespace.
Description#
The routine computes the inverses A
i-1
of general matrices
A
i, iϵ{1...batch_size}
. The total number of problems to solve,
batch_size
, is the sum of the sizes of all the groups of parameters as
provided by group_sizesarray
.
API#
Syntax#
namespace oneapi::mkl::lapack {
sycl::event geinv_batch(sycl::queue &queue,
int64_t *n,
T **a,
int64_t *lda,
int64_t group_count,
int64_t *group_sizes,
T *scratchpad,
int64_t scratchpad_size,
const std::vector<sycl::event> &events = {})
}
This function supports the following precisions and devices:
T
Devices supported
float
CPU and GPU
double
CPU and GPU
std::complex<float>
CPU and GPU
std::complex<double>
CPU and GPU
Input Parameters#
- queue
Device queue where calculations will be performed.
- n
Array of
group_count
parameters ng specifying the order of the matrices Ai (0 ≤ ng) belonging to groupg
.- a
Array of
batch_size
pointers to input matrices Ai.- lda
Array of
group_count
parameterslda
g specifying the leading dimension of Ai (n
g≤ lda
g) belonging to groupg
.- group_count
Specifies the number of groups of parameters. Must be at least 0.
- group_sizes
Array of
group_count
integers. Array element with indexg
specifies the number of problems to solve for each of the groups of parametersg
. So the total number of problems to solve,batch_size
, is the sum of all parameter group sizes.- scratchpad
Scratchpad memory to be used by the routine for storing intermediate results.
- scratchpad_size
Size of scratchpad memory as a number of floating point elements of type
T
. Size should not be less then the value returned by geinv_batch_scratchpad_size (Group Version).- events
List of events to wait for before starting computation. Defaults to empty list.
Output Parameters#
- a
Overwritten by the
n
g-by-n
g matricesA
i-1
.
Exceptions#
Exception |
Description |
---|---|
|
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 If |
Return Values#
Output event to wait on to ensure computation is complete.