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int info = pvm_sendsig( int tid, int signum )
call pvmfsendsig( tid, signum, info )
int info = pvm_notify( int what, int msgtag, int cnt, int tids )
call pvmfnotify( what, msgtag, cnt, tids, info )

The routine pvm_sendsig() sends a signal signum to another PVM task identified by TID. The routine pvm_notify requests PVM to notify the caller on detecting certain events. The present options are as follows:

In response to a notify request, some number of messages (see Appendix B) are sent by PVM back to the calling task. The messages are tagged with the user supplied msgtag. The tids array specifies who to monitor when using TaskExit or HostDelete. The array contains nothing when using HostAdd. If required, the routines pvm_config and pvm_tasks can be used to obtain task and pvmd tids.

If the host on which task A is running fails, and task B has asked to be notified if task A exits, then task B will be notified even though the exit was caused indirectly by the host failure .