SkelCL is a high level multi GPU skeleton library developed at the university of Münster, Germany.
|Map (const Source &source, const std::string &funcName=std::string("func"))|
|Constructor taking the source code used of the user-defined function as argument. More...|
|void||operator() (const Matrix< IndexPoint > &input, Args &&...args) const|
|Executes the skeleton on the index space described by the input Matrix. More...|
This version of the Map<Tout(Tin)> skeleton is executed over an two-dimensional index space defined by an IndexMatrix. This version is used when the user-function has return type void.
This is a more specialized version of the general Map<Tout(Tin)> skeleton. It can be customized with a user-defined function taking an IndexPoint (a pair of integer values). For this version the user-defined function must be void, i.e. return nothing.
On creation the Map skeleton is customized with source code defining a unary function. An instance of this class is a function object, i.e. it can be called like a function. When this happens a container is passed as input to the Map skeleton which then invokes the provided function on every element of the container in a parallel fashion on one or more devices (depending of the distribution of the container).
More formally: When c is a container of length n with items c .. c[n-1], and f is the provided unary function, the Map skeleton performs the calculation f(x[i]) for ever i in 0 .. n-1.
As all skeletons, the Map skeleton allows for passing additional arguments, i.e. arguments besides the input container, to the user defined function. The user-defined function has to written in such a way, that it expects more than just one argument (it is no unary function any more). Accordingly the number, types and order of arguments used when calling the map skeleton has to match the declaration of the user-defined function.
|skelcl::Map< void(IndexPoint)>::Map||(||const Source &||source,|
|const std::string &||funcName =
|void skelcl::Map< void(IndexPoint)>::operator()||(||const Matrix< IndexPoint > &||input,|
Executes the skeleton on the index space described by the input Matrix.
|Args||The types of the arguments which are passed to the user-defined function in addition to the input Matrix.|