[mpich-discuss] mpich2 under Ubuntu?

[Pavan Balaji]

Great. We also have another channel called nemesis which gives better 
performance than the default. If you like, you can configure that using:

  $ ./configure --prefix=/usr/local/mpich2 --enable-sharedlibs=gcc 
--with-device=ch3:nemesis

In the mpich2-1.1 series (we are at 1.1b1 currently), there have been a 
lot of improvements to nemesis; and it has been made the default channel 
as well. So if you'd like to be more on the bleeding edge, you can try 
that one too.

  -- Pavan

Mathieu Dubois wrote:
> Hi Pavan,
> 
> I just wanted to tell you that I have successfully compiled and 
> performed (basic) tests on mpich2 with you command line.
> 
> I have also compiled PCSIM and it seems to work correctly now.
> 
> Thank you very much.
> Mathieu
> 
> Mathieu Dubois wrote:
>> Hi Pavan,
>>
>> I don't remember why I used this ./configure options. I remember that 
>> I had problems with simpler command lines.
>>
>> I will retry with your suggestion in mind (but it will take a few 
>> hours...).
>>
>> Thank you very much for your fast reply.
>> Mathieu
>>
>> Pavan Balaji wrote:
>>>
>>> Is there a particular reason why you want to use dllchan instead of 
>>> the default? dllchan is experimental currently. If you want to use 
>>> the default, you can just do:
>>>
>>>  $ ./configure --prefix=/usr/local/mpich2 --enable-sharedlibs=gcc
>>>
>>>  -- Pavan
>>>
>>> Mathieu Dubois wrote:
>>>> 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/
>>>
>>
> 

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji