[Mpi-forum] MPI-3: MPI_T_... names

Wed Jul 25 04:59:03 CDT 2012

OK.

On Wed, 25 Jul 2012, Rolf Rabenseifner wrote:

> After no objection by the tools chapter committee,
> I would change everywhere (tools + appLang) in one svn step:
>
> - from old
>    MPI_T_ERR_CANNOTINIT
>    MPI_T_ERR_NOTINITIALIZED
>    MPI_T_ERR_MEMORY
>    MPI_T_ERR_CVAR_SETNOTNOW
>    MPI_T_ERR_CVAR_SETNEVER
>    MPI_T_ERR_PVAR_NOWRITE
>    MPI_T_ERR_PVAR_NOSTARTSTOP
>    MPI_T_ERR_PVAR_NOATOMIC
>    MPI_T_ERR_INVALIDINDEX
>    MPI_T_ERR_INVALIDITEM
>    MPI_T_ERR_INVALIDSESSION
>    MPI_T_ERR_INVALIDHANDLE
>    MPI_T_ERR_OUTOFHANDLES
>    MPI_T_ERR_OUTOFSESSIONS
>  to new
>    MPI_T_ERR_CANNOT_INIT
>    MPI_T_ERR_NOT_INITIALIZED
>    MPI_T_ERR_MEMORY           (unchanged)
>    MPI_T_ERR_CVAR_SET_NOT_NOW
>    MPI_T_ERR_CVAR_SET_NEVER
>    MPI_T_ERR_PVAR_NO_WRITE
>    MPI_T_ERR_PVAR_NO_STARTSTOP
>    MPI_T_ERR_PVAR_NO_ATOMIC
>    MPI_T_ERR_INVALID_INDEX
>    MPI_T_ERR_INVALID_ITEM
>    MPI_T_ERR_INVALID_SESSION
>    MPI_T_ERR_INVALID_HANDLE
>    MPI_T_ERR_OUT_OF_HANDLES
>    MPI_T_ERR_OUT_OF_SESSIONS
>
> Best regards
> Rolf
>
> ----- Original Message -----
>> From: "Bronis R. de Supinski" <bronis at llnl.gov>
>> To: "Main MPI Forum mailing list" <mpi-forum at lists.mpi-forum.org>
>> Sent: Tuesday, July 24, 2012 1:03:07 PM
>> Subject: Re: [Mpi-forum] MPI-3: MPI_T_... names
>> I have no strong opinion on this issue.
>>
>> On Tue, 24 Jul 2012, Rolf Rabenseifner wrote:
>>
>>> I started a new email-trunk, because this mail is mainly about
>>> names.
>>>
>>> The problem with MPI_T_... names is that they are partially
>>> very long:
>>>
>>> Current longest MPI_T constants:
>>>
>>> 123456789012345678901234567890
>>> MPI_T_PVAR_CLASS_HIGHWATERMARK (30)
>>> MPI_T_PVAR_CLASS_LOWWATERMARK (29)
>>> MPI_T_VERBOSITY_MPIDEV_DETAIL (29)
>>>
>>> The system is classes of constants are named with underscores,
>>> e.g. MPI_T_PVAR_CLASS, the end-names without underscores,
>>> e.g. HIGHWATERMARK.
>>>
>>> In the error codes, your right, they
>>> - should change from
>>>    MPI_T_ERR_INVALIDINDEX
>>>    MPI_T_ERR_INVALIDITEM
>>>    MPI_T_ERR_INVALIDSESSION
>>>    MPI_T_ERR_INVALIDHANDLE
>>>  to
>>>    MPI_T_ERR_INVALID_INDEX
>>>    MPI_T_ERR_INVALID_ITEM
>>>    123456789012345678901234567890
>>>    MPI_T_ERR_INVALID_SESSION (25)
>>>    MPI_T_ERR_INVALID_HANDLE
>>>  because the class name is MPI_T_ERR_INVALID_
>>>
>>> - and also
>>>    MPI_T_ERR_OUTOFHANDLES
>>>    MPI_T_ERR_OUTOFSESSIONS
>>>  to
>>>    MPI_T_ERR_OUT_OF_HANDLES
>>>    MPI_T_ERR_OUT_OF_SESSIONS
>>> - and they may change
>>>    MPI_T_ERR_CANNOTINIT
>>>    MPI_T_ERR_NOTINITIALIZED
>>>    MPI_T_ERR_MEMORY
>>>    MPI_T_ERR_CVAR_SETNOTNOW
>>>    MPI_T_ERR_CVAR_SETNEVER
>>>    MPI_T_ERR_PVAR_NOWRITE
>>>    MPI_T_ERR_PVAR_NOSTARTSTOP
>>>    MPI_T_ERR_PVAR_NOATOMIC
>>>  to
>>>    MPI_T_ERR_CANNOT_INIT
>>>    MPI_T_ERR_NOT_INITIALIZED
>>>    MPI_T_ERR_MEMORY
>>>    MPI_T_ERR_CVAR_SET_NOT_NOW
>>>    MPI_T_ERR_CVAR_SET_NEVER
>>>    MPI_T_ERR_PVAR_NO_WRITE
>>>    123456789012345678901234567890
>>>    MPI_T_ERR_PVAR_NO_STARTSTOP (27)
>>>    MPI_T_ERR_PVAR_NO_ATOMIC
>>>
>>> All the other MPI_T_... names seem to be fine.
>>>
>>> Bets regards
>>> Rolf
>>>
>>> ----- Original Message -----
>>>> From: "Alexander Supalov" <alexander.supalov at intel.com>
>>>> To: "Martin Schulz" <schulzm at llnl.gov>, "Main MPI Forum mailing
>>>> list" <mpi-forum at lists.mpi-forum.org>
>>>> Sent: Tuesday, July 24, 2012 9:35:13 AM
>>>> Subject: Re: [Mpi-forum] MPI-3: MPI_T_ERR_... and MPI_ERR_LASTCODE
>>>> Hi everybody,
>>>>
>>>> I see that that my innocent remarks re. Annex A have lead to a lot
>>>> of
>>>> discussion. What I'm going to say may resemble Bart Simpson's "I
>>>> didn't do it", but I think I have to:
>>>>
>>>> When commenting on the MPI_T_* names, I meant only their
>>>> composition
>>>> that differed from most other comparable MPI constant names in that
>>>> it
>>>> was 1) using contractions and 2) not using underscores to separate
>>>> different words. The MPI_T_CANTINIT was but one example of this. I
>>>> proposed to change all MPI_T_* names to follow the more traditional
>>>> rules (i.e., 1) do not use contractions and 2) do use underscores),
>>>> which lead to the MPI_T_CANNOT_INIT proposal that should be
>>>> consistently followed up on for every other MPI_T_* name. The
>>>> MPI_ERR_LASTCODE was mentioned as a counterexample of a known MPI
>>>> constant name that was not following this set of rules either. Oh
>>>> well, this is an old one and we won't change it. At no time did I
>>>> intend the MPI_T series to become a part of the MPI_ERR series,
>>>> although I must admit that they look really close when you start
>>>> thinking about them. We will probably have enough time for this
>>>> contemplation in the MPI 3.1 time frame.
>>>>
>>>> To sum up, my proposal now is:
>>>>
>>>> 1) Consider replacing contractions in all MPI_T_* names
>>>> 2) Consider using underscores in all MPI_T_* names
>>>> 3) Drop the MPI_ERR and MPI_T connection idea
>>>>
>>>> And if 1) and 2) are considered too invasive at this point, I won't
>>>> go
>>>> nuts either: after all, these are just constant names.
>>>>
>>>> Best regards.
>>>>
>>>> Alexander
>>>
>>> --
>>> Dr. Rolf Rabenseifner . . . . . . . . . .. email
>>> rabenseifner at hlrs.de
>>> High Performance Computing Center (HLRS) . phone
>>> ++49(0)711/685-65530
>>> University of Stuttgart . . . . . . . . .. fax ++49(0)711 /
>>> 685-65832
>>> Head of Dpmt Parallel Computing . . .
>>> www.hlrs.de/people/rabenseifner
>>> Nobelstr. 19, D-70550 Stuttgart, Germany . (Office: Allmandring 30)
>>> _______________________________________________
>>> mpi-forum mailing list
>>> mpi-forum at lists.mpi-forum.org
>>> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum
>>>
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>
> -- 
> Dr. Rolf Rabenseifner . . . . . . . . . .. email rabenseifner at hlrs.de
> High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530
> University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832
> Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner
> Nobelstr. 19, D-70550 Stuttgart, Germany . (Office: Allmandring 30)
>