> It easy to see the benefit of fewer qps (per node instead of per peer)
> and less consumption of resources the better but I am curious about
> the actual percentage of memory footprint decrease. I am thinking that
> the largest portion of the footprint comes from the fragments.
BTW here is link to another paper
that talks about more efficient usage of receive buffers.
> Do you have any numbers showing the actual memory footprint savings
> when using xrc?
I don't have.
> Pavel Shamis (Pasha) wrote:
>> Here is paper from openib
>> and here is mvapich presentation
>> Button line: XRC decrease number of QPs that ompi opens and as result
>> decrease ompi's memory footprint.
>> In the openib paper you may see more details about XRC. If you need
>> more details about XRC implemention
>> in openib blt , please let me know.
>> Instead Don Kerr wrote:
>>> After searching, about the only thing I can find on xrc is what it
>>> stands for, can someone explain the benefits of open mpi's use of
>>> xrc, maybe point me to a paper, or both?
>>> devel mailing list
Pavel Shamis (Pasha)