[MPICH] SMPD

[Krishna Chaitanya]

Hi,
      I am basically having one INTEL(32 bit) laptop and temporary access to
another AMD(64 bit) machine and  I am trying to trace and understand the
flow of MPICH2 code. I have worked on a couple of other implementations of
MPI, but I am a bit new to MPICH2. When I posted the question, I was trying
to get it to work on one node, by forcing it to use shared memory. I went
through the documentation again and I realised that I can select the device
  ch3:ssm, when I run the config script and this gives me more flexibility
as it uses socket between nodes and shared memory for intra-node
communication.Right now, I have coupled up both the machines.  However after
doing :

# ./configure --prefix=/home/kc/mpich-install/ --with-device=ch3:ssm CC=gcc
CFLAGS=-g
# make
# make install

    on both the nodes, I tried out
# mpiexec -n 2 /bin/hostname and it worked, but, on the AMP machine, it
flashed :
ERROR: ld.so: object '/usr/lib/libtsocks.so' from LD_PRELOAD cannot be
preloaded: ignored.

And on trying another with another simple MPI code, I got the following
messages :
$ mpiexec -n 2 /home/kc/sample
32 bit INTEL node :
/home/kc/sample: error while loading shared libraries: libuuid.so.1: wrong
ELF class: ELFCLASS64
and
64 bit AMD node :
ERROR: ld.so: object '/usr/lib/libtsocks.so' from LD_PRELOAD cannot be
preloaded: ignored.
/home/kc/sample: error while loading shared libraries: libuuid.so.1: wrong
ELF class: ELFCLASS64
ERROR: ld.so: object '/usr/lib/libtsocks.so' from LD_PRELOAD cannot be
preloaded: ignored.


   With respect to the ELF message, i guess the problem is due to the
compatibily issue which could be handled by using a CFLAG= -xarch=x86_64 on
the AMD machine. But, the configure script does not recognise this
CFLAG(correct me, if I am wrong) . Is there someway i can compile the MPICH
library with this flag?


Thanks,
Krishna Chaitanya K,
National Institute of Technology,Karnataka,Surathkal (NITK)
India



On Jan 10, 2008 12:06 PM, Dave Goodell <goodell at mcs.anl.gov> wrote:

> Hi Krishna,
>
> On my linux box, errno 98 means "Address already in use".  I think
> that the default port for smpd is 8676, so you might try looking for
> something else that is already bound to that port:
>
> % netstat -an | grep 8676
>
> -Dave
>
> On Jan 10, 2008, at 4:36 AM, Krishna Chaitanya wrote:
>
> > Hi,
> >           I am trying to launch mpiexec on a single node and I ran
> > the configure script with the " --with-pm=smpd" and the smpd file
> > was installed in the bin subdir. However, when i try to launch the
> > smp daemon, I get the following :
> >
> > ./smpd -s
> > Please specify an authentication passphrase for this smpd:
> > Would you like to save this passphrase in '/home/kc/.smpd'? yes
> > [00:2915]..ERROR:MPIDU_Sock_listen failed,
> > sock error: generic socket failure, error stack:
> > MPIDU_Sock_listen(369): unable to bind socket to port
> > (port=135207912,errno=98:(strerror() not found))
> >
> >            It would be of help if someone could let me know how to
> > troubleshoot this.
> >
> > Thanks,
> > Krishna Chaitanya K
> > --
> > In the middle of difficulty, lies opportunity
>
>


-- 
In the middle of difficulty, lies opportunity
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