Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Development mailing list

Subject: Re: [OMPI devel] New BTL parameter
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-12-12 14:03:02


On Dec 9, 2007, at 10:34 AM, Gleb Natapov wrote:

> Currently BTL has parameter btl_min_send_size that is no longer used.
> I want to change it to be btl_rndv_eager_limit. This new parameter
> will
> determine a size of a first fragment of rendezvous protocol. Now we
> use
> btl_eager_limit to set its size. btl_rndv_eager_limit will have to be
> smaller or equal to btl_eager_limit. By default it will be equal to
> btl_eager_limit so no behavior change will be observed if default is
> used.

Can you describe why it would be better to have the value less than
the eager limit?

-- 
Jeff Squyres
Cisco Systems