Arguments.
| G_INDEX | is a rank-one, INTENT (IN), integer array. |
| L_INDEX | is a rank-one, INTENT (OUT), integer array. |
| LOCAL | is a scalar, INTENT (OUT), logical. |
| NCOPIES | is a scalar, INTENT (OUT), integer. |
| PROCS | is a rank-one, integer array whose size is at least the number of processors that hold copies of the identified element. |