[mvapich-discuss] Latency unit and other new user issues

[Éric Germaneau]

Hey folks,

I'm learning how to use the packages and wondering what's the unit of 
the latency in the following tools:

  * osu_latency
  * osu_bw

and

  * osu_allgather
  * osu_allreduce
  * osu_bcast
  * osu_gather
  * osu_scatter
  * osu_iallgather
  * osu_ialltoall
  * osu_ibcast
  * osu_igather
  * osu_iscatter

I think it's micro second but need confirmation.
Also, I can not use more than two MPI process for the second bunch 
(collective).
Is there a way to test many process?
Thanks you.

-- 
Éric Germaneau (艾海克), Specialist
Center for High Performance Computing
Shanghai Jiao Tong University
Room 205 Network Center, 800 Dongchuan Road, Shanghai 200240 China
Email:germaneau at sjtu.edu.cn Mobi:+86-136-4161-6480 http://hpc.sjtu.edu.cn

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