size()An inquiry function returning the extent, N, of the dimension. For a dimension of a process array, this is the extent specified in the shape vector for that array. For a collapsed dimension, N defined to be 1.
crd()An inquiry function returning an integer coordinate for the local process relative to this process dimension. For a process array dimension the result value is only defined if the local process is a member of the parent array. It is then in the range
,
where N is the extent of the dimension. For a collapsed dimension,
the result is 0.
str_prc()An inquiry function defining the stride in process id (relative to the parent array) associated with this dimension. For a collapsed dimension the function is ill-defined.