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

Kathryn Mohror kathryn at llnl.gov
Wed Jul 25 10:31:12 CDT 2012 

I also agree to the name changes.

Kathryn

On 7/25/2012 2:59 AM, Bronis R. de Supinski wrote:
>
> 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
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>>>>
>>> _______________________________________________
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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)
>>
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_____________________________________________________________________
Kathryn Mohror, kathryn at llnl.gov, http://people.llnl.gov/mohror1
CASC @ Lawrence Livermore National Laboratory, Livermore, CA, USA

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