Small messages, i.e. their length is under btl_sm_eager_limit, always use
normal SM. KNEM usage is restricted only for messages over either the eager
size or the btl_sm_knem_dma_min (if KNEM supports DMA).
George.
On Sep 4, 2013, at 12:47 , Alina Sklarevich wrote:
> Hi,
>
> I am building
Hi,
I am building ompi v1.6 with knem support and I see that when knem is
enabed from the command line
it is used for all message sizes in SM btl. There is no threshold for when
to start using knem - starting
which message size.
This makes the performance of small messages worse since it also uses
