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From: Lydia Heck (lydia.heck_at_[hidden])
Date: 2006-11-20 15:05:22


I have built the myrinet drivers with gcc or the studio 11 compilers from sun.
The following problem appears for both installations.

I have tested the myrinet installations using myricoms own test programs.

Then I build open-mpi using the studio11 compilers enabling myrinet.

All the library paths are correctly set and I can run my test program
which is written in C, successfully, if I choose the number of CPUs to be equal
the number of nodes, which means one instance of process per node!

Each node has 4 CPUs.

If I now request the number of CPUs for the run to be larger than the
number of nodes I get an error message, which clearly indicates
that the openmpi cannot communicate over more than one channel
on the myrinet card. However I should be able to communicate over
4 channels at least - colleagues of mine are doing that using
mpich and the same type of myrinet card.

Any idead why this should happen?

the hostfile looks like:

m2009 slots=4
m2010 slots=4

but it will provide the same error if the hosts file is

m2009
m2010

ompi_info | grep mx
2001(128) > ompi_info | grep mx
                 MCA btl: mx (MCA v1.0, API v1.0.1, Component v1.2)
                 MCA mtl: mx (MCA v1.0, API v1.0, Component v1.2)
m2009(160) > /opt/mx/bin/mx_endpoint_info
1 Myrinet board installed.
The MX driver is configured to support up to 4 endpoints on 4 boards.
===================================================================
Board #0:
Endpoint PID Command Info
<raw> 15039
0 15544
There are currently 1 regular endpoint open

m2001(120) > mpirun -np 6 -hostfile hostsfile -mca btl mx,self b_eff
--------------------------------------------------------------------------
Process 0.1.0 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.2 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.4 is unable to reach 0.1.4 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.1 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.5 is unable to reach 0.1.4 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.3 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  --------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
*** An error occurred in MPI_Init
*** before MPI was initialized
*** MPI_ERRORS_ARE_FATAL (goodbye)
*** An error occurred in MPI_Init
*** before MPI was initialized
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
*** An error occurred in MPI_Init
*** before MPI was initialized
*** MPI_ERRORS_ARE_FATAL (goodbye)
*** MPI_ERRORS_ARE_FATAL (goodbye)
m2001(121) > mpirun -np 4 -hostfile hostsfile -mca btl mx b_eff
--------------------------------------------------------------------------
Process 0.1.0 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.1 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.2 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
Process 0.1.3 is unable to reach 0.1.0 for MPI communication.
If you specified the use of a BTL component, you may have
forgotten a component (such as "self") in the list of
usable components.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
*** An error occurred in MPI_Init
*** before MPI was initialized
*** MPI_ERRORS_ARE_FATAL (goodbye)
*** An error occurred in MPI_Init
*** before MPI was initialized
*** MPI_ERRORS_ARE_FATAL (goodbye)
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
*** An error occurred in MPI_Init
*** before MPI was initialized
*** MPI_ERRORS_ARE_FATAL (goodbye)
--------------------------------------------------------------------------
It looks like MPI_INIT failed for some reason; your parallel process is
likely to abort. There are many reasons that a parallel process can
fail during MPI_INIT; some of which are due to configuration or environment
problems. This failure appears to be an internal failure; here's some
additional information (which may only be relevant to an Open MPI
developer):

  PML add procs failed
  --> Returned "Unreachable" (-12) instead of "Success" (0)
--------------------------------------------------------------------------
*** An error occurred in MPI_Init
*** before MPI was initialized
*** MPI_ERRORS_ARE_FATAL (goodbye)

------------------------------------------
Dr E L Heck

University of Durham
Institute for Computational Cosmology
Ogden Centre
Department of Physics
South Road

DURHAM, DH1 3LE
United Kingdom

e-mail: lydia.heck_at_[hidden]

Tel.: + 44 191 - 334 3628
Fax.: + 44 191 - 334 3645
___________________________________________