Running and debugging programs

• The sender doesn't get a copy of multicast messages
• My tasks can't read input from the keyboard
• My tasks can't open input/output files
• Where does stuff printed in tasks go?
• I don't see printed output from tasks right away or at all
• In what directory do tasks spawned by PVM run?
• How can I spawn a process with a nice priority value?
• What does ``mc pkt ... scrapped'' mean?
• What does ``message scrapped'' mean?
• Memory used by the pvmd increases when programs run
• My program is hanging