dot (USM Version)¶
Computes the dot
product of two real vectors.
Description¶
The dot
routines perform a dot
product between two vectors:
Note
For the mixed precision version (inputs are float while result is double), the dot
product is computed with double precision.
API¶
Syntax¶
namespace oneapi::mkl::blas::column_major {
sycl::event dot(sycl::queue &queue,
std::int64_t n,
const T *x,
std::int64_t incx,
const T *y,
std::int64_t incy,
T_res *result,
const std::vector<sycl::event> &dependencies = {})
}
namespace oneapi::mkl::blas::row_major {
sycl::event dot(sycl::queue &queue,
std::int64_t n,
const T *x,
std::int64_t incx,
const T *y,
std::int64_t incy,
T_res *result,
const std::vector<sycl::event> &dependencies = {})
}
The USM version of dot
supports the following precisions and devices.
T |
T_res |
Devices Supported |
---|---|---|
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
Input Parameters¶
- exec_queue
The queue where the routine should be executed.
- n
Number of elements in vectors x and y.
- x
Pointer to the input vector x. The array holding the vector x must be of size at least
(1 + (n – 1)*abs(incx))
. See Matrix Storage for more details.- incx
Stride of vector x.
- y
Pointer to the input vector y. The array holding the vector y must be of size at least
(1 + (n – 1)*abs(incy))
. See Matrix Storage for more details.- incy
Stride of vector y.
- dependencies
List of events to wait for before starting computation, if any. If omitted, defaults to no dependencies.
Output Parameters¶
- result
Pointer to where the result (a scalar) will be stored.
Return Values¶
Output event to wait on to ensure computation is complete.