A multishift schedule is a communication schedule for shifting the elements of a distributed array along some or all of its dimensions concurrently, placing the result in another array. The source and destination must have the same shape and same element-type, and they must have a certain alignment relation.
A multishift schedule is described by a collective object with local components of class MultiShift. The public interface of the MultiShift class is
class DAD ;
enum Mode {CYCL, EDGE, NONE} ;
class MultiShift {
public :
MultiShift(const DAD* dst, const DAD* src, const int len,
int shift [], Mode mode []) ;
void execute(void* dstDat, void* srcDat) ;
private :
...
} ;