Is there a general function for making the engine progress any pending request?

[miEsMar]

Hi everyone,

I was wondering if there is a general function that can be called using MPICH MPI Implementation to explicitly ask the underlying engine to progress any incomplete request that might exist.
Preferably a layer above the actual engine (CH3 or CH4) interface, so to avoid the use of macros to specialize actual calls.
Similar to opal_progress() for OpenMPI.

Thanks.

[raffenet]

@miEsMar if you are using MPICH >= 4.1.0, you can use MPIX_Stream_progress(MPIX_STREAM_NULL);

[miEsMar]

Thanks for the valuable information @raffenet !
For previous versions what would it be the preferred approach?
To better navigate the code I cloned the main branch, and there I see there's the MPID_Stream_progress() function, not MPIX.
Can I use that?
PS: I see that in case of using MPICH3, it is actually defined as a macro redirecting to MPIDI_CH3_Progress_poke().|
EDIT: I ask since on our systems it is highly the case that the 3.x version is provided for some machines, and I would love the tool to work regardless of the actual engine used.