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Subject: Re: [OMPI devel] RFC: eliminating "descriptor" argument from sendi function
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2009-02-23 10:28:22


Sounds reasonable to me. George / Brian?

On Feb 21, 2009, at 2:11 AM, Eugene Loh wrote:

> What: Eliminate the "descriptor" argument from sendi functions.
>
> Why: The only thing this argument is used for is so that the sendi
> function can allocate a descriptor in the event that the "send"
> cannot complete. But, in that case, the sendi reverts to the PML,
> where there is already code to allocate a descriptor. So, each
> sendi function (in each BTL that has a sendi function) must have
> code that is already in the PML anyhow. This is unnecessary extra
> coding and not clean design.
>
> Where: In each BTL that has a sendi function (only three, and there
> are not all used) and in the function prototype and at the PML
> calling site.
>
> When: I'd like to incorporate this in the shared-memory latency
> work I'm doing that we're targetting for 1.3.x.
>
> Timeout: Feb 27.
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-- 
Jeff Squyres
Cisco Systems