Hi all, during the final chapter reads, the following issue came up in the section "Memory Allocation" in Chapter 8, MPI Environmental Management. Here is the context

\section{Memory Allocation} \label{sec:misc-memalloc}

In some systems, message-passing and remote-memory-access (\RMA/) operations run faster when accessing specially allocated memory (e.g., memory that is shared by the other processes in the communicating group on an SMP). \MPI/ provides a mechanism for allocating and freeing such special memory. The use of such memory for message-passing or \RMA/ is not mandatory, and this memory can be used without restrictions as any other dynamically allocated memory.

This is followed by the following sentence:

However, implementations may restrict the use of the \mpifunc{MPI\_WIN\_LOCK} and \mpifunc{MPI\_WIN\_UNLOCK} functions to windows allocated in such memory (see Section~\ref{sec:1sided-lock}.)

This covers the restrictions for 2.2, but not for the new RMA chapter. Therefore, the RMA group (or a subset thereof) suggested to change that sentence to:

However, implementations may restrict the use of some RMA functionality as defined in Section~\ref{sec:1sided-lock}.

and leave the definition of the semantics to the RMA chapter. Please reply to the group if there are any objections or concerns. Thanks, Martin ________________________________________________________________________ Martin Schulz, [email protected], http://people.llnl.gov/schulzm CASC @ Lawrence Livermore National Laboratory, Livermore, USA