[mvapich-discuss] How to configure MPD for using RDMA through Chelsio iWarp adapters

[Parav Pandit]

Thanks for the quick inputs.
I was referring to it and couldn't do it, so post the generic question.
Let me come to specific question now.

System-1(front-node) I started mpd using
#mpd -n 1 

user guide doesn't say whether to start mpd on front node or not. It says start on the compute node. I think its implicit to start on the front-node also.
Similarly started the mpd on the System-2 also with same command.

Then on system-1 I run 
#mpiexec -machinefile mf_list -n 1 -env MV2_USE_RDMA_CM 1 -env MV2_USE_SRQ 0 ./srtest 

mf_list contains following data.
192.168.1.2 ifhn=192.168.1.1 
#1.1 is the iWarp RNIC's IP (front-node)
#1.2 is the remote end (compute-node).

With this I am getting following error.
mpiexec: unable to start all procs; may have invalid machine names
    remaining specified hosts:
        192.168.1.2

I am unable to figure out whats wrong in the configuration.
I haven't tried the mpirun_rsh yet. I would like to go step by step and understand the functionality and build-up.

Regards,
Parav Pandit


--- On Mon, 8/3/09, Hari Subramoni <subramon at cse.ohio-state.edu> wrote:

> From: Hari Subramoni <subramon at cse.ohio-state.edu>
> Subject: Re: [mvapich-discuss] How to configure MPD for using RDMA through Chelsio iWarp adapters
> To: "Parav Pandit" <paravpandit at yahoo.com>
> Cc: mvapich-discuss at cse.ohio-state.edu
> Date: Monday, August 3, 2009, 10:42 PM
> Hi Parav,
> 
> The information you need is available in our userguide at
> the following
> link...
> 
> http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-1.2.html#x1-180005.2.3
> 
> The following link give information on how to launch jobs
> using mpiexec
> 
> http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-1.2.html#x1-200005.2.5
> 
> MVAPICH2-1.2 has support for a new job launcher -
> mpirun_rsh, which does
> not require you to setup mpd rings. It will also give
> improved startup
> performance. The following link give you detailed
> information on how to
> launch applications with this.
> 
> http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-1.2.html#x1-160005.2.1
> 
> Let us know if you have any more questions.
> 
> Thx,
> Hari.
> 
> On Mon, 3 Aug 2009, Parav Pandit wrote:
> 
> > Hi,
> >
> > I am using MVAPICH-2 version 1.2p1 as part of OFED-1.4
> with #2 cxgb3 Chelsio iWarp cards.
> >
> > I am trying to run srtest.c using mpiexec between
> these two adapters.
> > One as sender, other as receiver.
> > I am unable to configure MPD daemon. Can someone
> suggest me simplest way to configure MPD and how to run
> srtest using mpiexec?
> > I want to have one as Front-Node other as
> Compute-Node.
> >
> > I have done following configuration.
> > System-1
> > echo 192.168.1.1 > /etc/mv2.conf
> >
> > System-2
> > echo 192.168.1.2 > /etc/mv2.conf
> >
> > Do I have to start MPD on both systems first, what
> should be the parameters to it?
> >
> > Regards,
> > Parav Pandit
> >
> >
> >
> >
> > _______________________________________________
> > mvapich-discuss mailing list
> > mvapich-discuss at cse.ohio-state.edu
> > http://mail.cse.ohio-state.edu/mailman/listinfo/mvapich-discuss
> >
> 
>