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Subject: Re: [OMPI devel] RFC: eliminating "descriptor" argument from sendi function
From: Brian W. Barrett (brbarret_at_[hidden])
Date: 2009-02-23 11:24:12

At a high level, it seems reasonable to me. I am not familiar enough with
the sendi code, however, to have a strong opinion either way.


On Mon, 23 Feb 2009, Jeff Squyres wrote:

> 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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