[Mpi-forum] MPI user survey

[Pavan Balaji]

On 11/14/2009 07:00 PM, Rajeev Thakur wrote:
>> x. My MPI application would benefit from being able to reference more
>>     than 2^31 data items in a single MPI function invocation.
>>      Strongly agree/1 ....... Strongly disagree/5
>>      Open comment: _________________________
> 
> Perhaps the average person would more easily understand the following
> although it is not precise and doesn't cover I/O: "My MPI application
> would benefit from being able to send/receive more than 2 GB of data
> with a single MPI call". We will know if people want to communicate data
> that large. Whether they could construct a contiguous type and do it
> today is a different story.

If I had no clue what the implications of this would be (which is true
for most people who are not attending the Forum meetings), my answer
would certainly be yes.

Maybe we should say, "My MPI application would benefit from being able
to send/receive 2GB data ..., even if it means that I have to modify the
type signature of all MPI functions in my application".

 -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji