Clarifying note on forking, exit handlers, and implicit finalization

Author: nspark

content/interoperability.tex

@@ -39,6 +39,12 @@ \section{Subprocesses}
 \parimpnotes{
   All \openshmem implementations should ensure interoperability with
   the \FUNC{posix\_spawn} and \FUNC{posix\_spawnp} \acp{API}.
+
+  \openshmem implementations that support implicit library
+  finalization for compatibility with \FUNC{start\_pes} should ensure
+  that child processes created after library initialization do not
+  implicitly call \openshmem operations as part of exit handlers
+  invoked during normal process termination.
 }