Thank you, John Casu and Edgar Gabriel for the pointers
to the parameter space sweep script and the OTPO code.
For simplicity,
I was thinking of testing each tuned collective separately,
instead of the applications, to have an idea
of which algorithms and parameters are best for our small cluster
Gus Correa wrote:
Terry Frankcombe wrote:
There's been quite some discussion here lately about the effect of OMPI
tuning parameters, particularly w.r.t. collectives.
Is there some tool to probe performance on any given network/collection
of nodes to aid optimisation of these parameters?
(I'm t
I'm not sure that there is a general "best set" of parameters, given the
dependence of that set on comms patterns, etc...
Still, this *is* a classic parameter sweep and optimization problem
(unlike ATLAS), with a small number of parameters, and is the sort of
thing one should be able to hook u
Terry Frankcombe wrote:
There's been quite some discussion here lately about the effect of OMPI
tuning parameters, particularly w.r.t. collectives.
Is there some tool to probe performance on any given network/collection
of nodes to aid optimisation of these parameters?
(I'm thinking something a
There's been quite some discussion here lately about the effect of OMPI
tuning parameters, particularly w.r.t. collectives.
Is there some tool to probe performance on any given network/collection
of nodes to aid optimisation of these parameters?
(I'm thinking something along the philosophy of ATL
