In this part we shall give a short description of the routines in the PVM 3 user library. Each PVM program should include the PVM header file "pvm3.h" (in a C program) or "fpvm3.h" (in a Fortran program).
In PVM 3, all PVM tasks are recognized by an integer supplied by the local pvmd. In the following explanations this task identifier is known as TID. Now we are introducing some usually used functions in PVM programming (as in C. For Fortran, we use prefix pvmf against pvm in C).