itaps-parallel Assignments for parallel interface, due before 2/5 phone conf

[Devine, Karen D]

Vitus:  Thanks for the corrections and sorry for the confusion.  I think
these calls need some sort of "message tag" (analogous to MPI's message tag)
that allows sends and receives to be interwoven.  Also, we should consider
whether we need a post/send/wait model as Onkar described.

Karen


On 2/4/08 1:30 PM, "Vitus Leung" <vjleung at sandia.gov> wrote:

> On Tue, 2008-01-22 at 11:48 -0700, Devine, Karen D wrote:
>
>> Vitus:
>> -  Propose the communication functions needed to support
>> prefix_sendEntArrToParts and prefix_receiveEntArrToParts.
>
> Karen,
>
> Here are the minor syntax corrections we discussed for these two
> functions.
>
>     void prefix_sendEntArrToParts(iMesh_Instance instance,
>                       /*in*/  const prefix_PartitionHandle
> partition_handle,
>                       /*in*/  const iBase_EntityHandle *entity_handles,
>                       /*in*/  const int entity_handles_size,
>                       /*in*/  const int *target_part_ids,
>                       /*in*/  int command_code,  // e.g., MIGRATE,COPY
>                               int *err);
>
>     void prefix_receiveEntArrToParts(iMesh_Instance instance,
>                       /*in*/  const prefix_PartitionHandle
> partition_handle,
>                    /*inout*/  iBase_EntityHandle **entity_handles,
>                    /*inout*/  int *entity_handles_size,
>                      /*out*/  int *entity_handles_allocated,
>                    /*inout*/  int *target_part_ids,
>                      /*out*/  int *target_part_ids_allocated,
>                    /*inout*/  int command_code,  // e.g., MIGRATE,COPY
>                               int *err);
>
> The prefix_sendEntArrToParts() should be a collective call.  With the
> entity_handles and target_part_ids in all the calls, the implementation
> can determine the pairwise send/receives with all to all communication.
> This can be held by the implementation until the
> prefix_receiveEntArrToParts() call or passed back to the application in
> an additional argument.  If the additional argument is used, it should
> be passed to prefix_receiveEntArrToParts().
>
> Vitus
>
>