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

[Jim Dinan]

We could also shorten it to:

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.

  ~Jim.

On 9/5/12 8:38 AM, Rajeev Thakur wrote:
> Another option is to just add an "or \mpifunc{MPI\_WIN\_ALLOCATE\_SHARED}" to the first sentence, as below, but either version is fine with me.
>
> 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 in \mpifunc{MPI\_WIN\_ALLOCATE} or \mpifunc{MPI\_WIN\_ALLOCATE\_SHARED}.
>
>
> On Sep 5, 2012, at 2:50 AM, William Gropp wrote:
>
>> Here's the current text (p 415 line 6):
>>
>> If the
>> window was created with \mpifunc{MPI\_WIN\_ALLOCATE},
>> \mpifunc{MPI\_WIN\_FREE} will free the window memory that was allocated
>> in \mpifunc{MPI\_WIN\_ALLOCATE}.}
>>
>> Here is my proposed correction
>>
>> (above text, followed by)
>>
>> If the window was created with \mpifunc{MPI\_WIN\_ALLOCATE\_SHARED},
>> \mpifunc{MPI\_WIN\_FREE} will free the window memory that was allocated
>> in \mpifunc{MPI\_WIN\_ALLOCATE\_SHARED}.
>>
>> This is a sufficient change, since the document is a standard and we don't need to state the same behavior everywhere (note that MPI_WIN_ALLOCATE doesn't mention MPI_WIN_FREE in the description of MPI_WIN_ALLOCATE).
>>
>> Thoughts?  Is this a "simple oversight" error that we can add?
>>
>> Bill
>>
>>
>> William Gropp
>> Director, Parallel Computing Institute
>> Deputy Director for Research
>> Institute for Advanced Computing Applications and Technologies
>> Paul and Cynthia Saylor Professor of Computer Science
>> University of Illinois Urbana-Champaign
>>
>>
>>
>> On Sep 5, 2012, at 12:39 AM, Jeff Hammond wrote:
>>
>>> Okay, I thought it might do that but despite having a paper copy of
>>> the MPI-3 RMA chapter three feet from me at the time, I was too lazy
>>> to look it up.
>>>
>>> Thanks for the clarification.
>>>
>>> Jeff
>>>
>>> On Tue, Sep 4, 2012 at 11:47 PM, Jim Dinan <dinan at mcs.anl.gov> wrote:
>>>> MPI_Win_free also frees memory allocated by MPI_Win_allocate.
>>>>
>>>> ~Jim.
>>>>
>>>>
>>>> On 9/4/12 4:22 PM, Jeff Hammond wrote:
>>>>>
>>>>> Shouldn't that be a new call (MPI_Win_free_shared) to keep the usage
>>>>> of MPI_Win_free uniform?  MPI_Win_free doesn't deallocate the buffers
>>>>> in any other situation, does it?
>>>>>
>>>>> Jeff
>>>>>
>>>>> On Tue, Sep 4, 2012 at 4:07 PM, Jim Dinan <dinan at mcs.anl.gov> wrote:
>>>>>>
>>>>>> Hi All,
>>>>>>
>>>>>> It looks like we forgot to include the text specifying that
>>>>>> MPI_Win_allocate_shared memory is freed along with the window.
>>>>>>
>>>>>> ~Jim.
>>>>>>
>>>>>>
>>>>>> -------- Original Message --------
>>>>>> Subject:        [Mpi-comments] Freeing memory allocated in
>>>>>> MPI_WIN_ALLOCATE_SHARED
>>>>>> Date:   Tue, 4 Sep 2012 12:49:10 +0000
>>>>>> From:   Hubert Ritzdorf <Hubert.Ritzdorf at emea.nec.com>
>>>>>> Reply-To:       Comments on the MPI Standard
>>>>>> <mpi-comments at lists.mpi-forum.org>
>>>>>> To:     mpi-comments at lists.mpi-forum.org
>>>>>> <mpi-comments at lists.mpi-forum.org>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> is it correct that MPI_Win_free should free the memory allocated in
>>>>>> MPI_Win_allocate_shared ?
>>>>>>
>>>>>> MPI_Win_free (Page 416, Line 5-6) specifies this only for
>>>>>> memory allocated by MPI_Win_allocate.
>>>>>> I think that an additional reference to MPI_Win_allocate_shared is
>>>>>> missing also on Page 420, Line 31, Page 448 Line 25, Page 609 Line 31,
>>>>>> Page 613 Line 1, Page 614 Line 9, Page 614 Line 31.
>>>>>>
>>>>>> Hubert
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> mpi3-rma mailing list
>>>>>> mpi3-rma at lists.mpi-forum.org
>>>>>> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma
>>>>>
>>>>>
>>>>>
>>>>>
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>>>
>>>
>>>
>>> --
>>> Jeff Hammond
>>> Argonne Leadership Computing Facility
>>> University of Chicago Computation Institute
>>> jhammond at alcf.anl.gov / (630) 252-5381
>>> http://www.linkedin.com/in/jeffhammond
>>> https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond
>>> _______________________________________________
>>> mpi3-rma mailing list
>>> mpi3-rma at lists.mpi-forum.org
>>> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma
>>
>>
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