[Mpi3-rma] [Mpi-comments] Freeing memory allocated in MPI_WIN_ALLOCATE_SHARED

[Hubert Ritzdorf]

Hi Torsten,

I agree. What's about this proposal for which Bill was asking:

Page 407, after Line 46 (relative to mpi3,0_draft2.pdf):
\mpifunc{MPI\_WIN\_FREE} will free the window memory that was allocated in
\mpifunc{MPI\_WIN\_ALLOCATE}.  

Page 409, after Line 29:
\mpifunc{MPI\_WIN\_FREE} will free the window memory that was allocated in
\mpifunc{MPI\_WIN\_ALLOCATE\_SHARED}. 

Page 415,  Line 5:
Replace 
MPI_WIN_FREE will free the window memory that was allocated in MPI_WIN_ALLOCATE.
by
\mpifunc{MPI\_WIN\_FREE} might detach or free the window memory. The specific window creation and
attach functions specify effects on the window memory by  \mpifunc{MPI\_WIN\_FREE}.

Page 415, Line 6-8:
To be consistent, the text "Freeing a window that was created with ..." should be removed and
mainly moved to:

Page 414, after Line 3:

\mpifunc{MPI\_WIN\_FREE)  will detach all associated memory; i.e. it has the same effect
as if all attached memory was detached by calls to \mpifunc{MPI\_WIN\_DETACH}.

Hubert

________________________________________
From: mpi3-rma-bounces at lists.mpi-forum.org [mpi3-rma-bounces at lists.mpi-forum.org] on behalf of Torsten Hoefler [htor at illinois.edu]
Sent: Tuesday, September 11, 2012 9:14 AM
To: MPI 3.0 Remote Memory Access working group
Subject: Re: [Mpi3-rma] [Mpi-comments] Freeing memory allocated in      MPI_WIN_ALLOCATE_SHARED

On Mon, Sep 10, 2012 at 04:45:15PM -0500, Rajeev Thakur wrote:
> I think the wording Jim suggested is the simplest for now:
>
> If the window was created with \mpifunc{MPI\_WIN\_ALLOCATE} or
> \mpifunc{MPI\_WIN\_ALLOCATE\_SHARED}, \mpifunc{MPI\_WIN\_FREE} will
> free the window memory that was allocated during window creation.
I'd really like to avoid such lists. I vote to add a sentence to the two
creation functions that win_free (with a forward reference) will free
the allocated memory (and remove the existing sentence in win_free).
This will avoid inconsistencies in the future and seems rather
uncontroversial.

Torsten


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