Jeff,
right .. 7.0
Following is the result of laminfo. I did find and use GM with configure: --with-gm=/usr/gm-1.5.2.1_Linux-2.4.18-4smp
Does this mean that by default, MPI programs will use the native Myrinet interfaces (when, say, using straight "lamboot" on a PBS scheduled process)? Or does one need to do something special to get the native Myrinet to be used?
-rich
LAM/MPI: 7.0
Prefix: /data/rrdrake/lam
Architecture: i686-pc-linux-gnu
Configured by: rrdrake
Configured on: Fri Sep 26 19:05:41 MDT 2003
Configure host: master.v8.sandia.gov
C bindings: yes
C++ bindings: yes
Fortran bindings: yes
C profiling: yes
C++ profiling: yes
Fortran profiling: yes
ROMIO support: yes
IMPI support: no
Debug support: no
Purify clean: no
SSI boot: globus (Module v0.5)
SSI boot: rsh (Module v1.0)
SSI boot: tm (Module v1.0)
SSI coll: lam_basic (Module v7.0)
SSI coll: smp (Module v1.0)
SSI rpi: crtcp (Module v1.0)
SSI rpi: gm (Module v1.0)
SSI rpi: lamd (Module v7.0)
SSI rpi: sysv (Module v7.0)
SSI rpi: tcp (Module v7.0)
SSI rpi: usysv (Module v7.0)
Jeff Squyres wrote:
>
> On Sat, 27 Sep 2003, Richard Drake wrote:
>
> > i just downloaded and installed 6.7.0 on a linux cluster using PBS and
>
> I think you mean 7.0. :-)
>
> > using GM. i like the ability of lamboot to recognize the nodes
> > available by PBS so that a boot schema file is not needed, nice!
>
> Woo hoo!
>
> > however, i am concerned that lamboot is not using the Myrinet comm
> > fabric, but rather the ethernet.
> >
> > with a boot schema, one puts "node07-myri0" instead of just "node07" to
> > trigger the Myrinet fabric.
>
> Is there a reason you're using the IP layer over Myrinet instead of native
> Myrinet? The IP layer over Myrinet adds a little more latency and reduces
> available bandwidth as compared to native Myrinet.
>
> Specifically -- if you lamboot across either IP layer (ethernet or IP
> Myrinet) and then use the "gm" RPI module, you'll be using the native
> Myrinet interface (which obviously doesn't require any IP addresses).
>
> You can check to see if you compiled in support for native Myrinet by
> running "laminfo" and see if you see the gm RPI module lised. If it's
> not, double check your ./configure settings from when you installed LAM.
> Ensure to specify --with-gm=/path/to/gm/installation. See the Install
> Guide, section 5.2.4.
>
> Note that 7.0.1 is due out "shortly", and will contain support for both gm
> 1.6.x and 2.0.x.
>
> --
> {+} Jeff Squyres
> {+} jsquyres_at_[hidden]
> {+} http://www.lam-mpi.org/
> _______________________________________________
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