[mpich-discuss] mpich2 under Ubuntu?

[Mathieu Dubois]

Hello everyone,

First I'm a newbie in the MPI world so please excuse me if I ask stupid 
questions.

Let me explain my problem. I'm using Ubuntu 8.10 /Intrepid Ibex/ on a 
x86_64 machine. I need to install MPICH2 in order to compile and run the 
PCSIM neural simulator (http://www.lsm.tugraz.at/pcsim/).

I have found packages for mpich2 in 
http://ppa.launchpad.net/metlov/ppa/ubuntu . Unfortunately those 
packages doesn't provide shared libraries (.so files).
So I tried to compile mpich2-1.0.8 from source with the following configure:
./configure --prefix=/usr/local/mpich2/ --enable-sharedlibs=gcc 
--with-device=ch3:dllchan:sock,shm,ssm
Compilation was ok and I installed it under /usr/local/mpich2 . I see a 
lot of .so files under /usr/local/mpich2/lib as expected.
I successfully compiled PCSIM with this library.

But when I import the pcsim python package I get the following errors:
 >>> import pypcsim
Fatal error in MPI_Init: Other MPI error, error stack:
MPIR_Init_thread(294): Initialization failed
MPID_Init(75)........:
MPICH_CH3_PreLoad(63):
MPIU_DLL_Open(42)....:  Unable to load the dynamically loadable library 
libmpich2-ch3-sock.so for reason 
/usr/local/mpich2/lib/libmpich2-ch3-sock.so: undefinedsymbol: 
MPIDI_Process[unset]: aborting job:
Fatal error in MPI_Init: Other MPI error, error stack:
MPIR_Init_thread(294): Initialization failed
MPID_Init(75)........:
MPICH_CH3_PreLoad(63):
MPIU_DLL_Open(42)....:  Unable to load the dynamically loadable library 
libmpich2-ch3-sock.so for reason 
/usr/local/mpich2/lib/libmpich2-ch3-sock.so: undefinedsymbol: MPIDI_Process

This looks like something is missing in MPICH libraries (something like 
a compilation option)... I haven't found anything relevant on the web.

Does anyone have an idea? Any help would be appreciated.

Thanks in advance,
Mathieu

P.S.: I have set the LD_LIBRARY_PATH variable
$ export LD_LIBRARY_PATH=/usr/local/mpich2/lib/