PyCUDA provides a functionality to perform reduction operations on the GPU. This is possible with the
ReductionKernel(dtype_out, arguments, map_expr ,reduce_expr, name,optional_parameters)
Here, we note that:
dtype_out: This is the output's data type. It must be specified by the
arguments: This is a C argument list of all the parameters involved in the reduction's operation.
map_expr: This is a string that represents the mapping operation. Each vector in this expression must be referenced with the variable
reduce_expr: This is a string that represents the reduction operation. The operands in this expression are indicated by lowercase letters, such ...