[mpich-discuss] MPICH2 for ARM

[Pavan Balaji]

Well, if you want to use ssh, you obviously need to have it installed.

  -- Pavan

On 11/14/2011 07:35 AM, Harald Schuster wrote:
> Ok I used now the mpich2-1.3.2 version with hydra and start the program
> with the parameter "-launcher fork" and it works. I don't get a
> segmentation fault any more and thats fine. But I have one question
> about the fork launcher. Is it possible to start a programm on different
> nodes with this launcher or must i use the ssh launcher for this?
> Because with the ssh launcher I got an error but I think this error
> depends on the configuration of ssh on my node?!
>
> [mpiexec at da830] HYDU_create_process
> (/mnt/ti_am1707_root/home/default/mpich2-1.3.2/src/pm/hydra/utils/launch/launch.c:69):
> execvp error on file ssh (No such file or directory)
>
> best regards
>
> Harald
>
> On 14.11.2011 12:59, Harald Schuster wrote:
>> Hi
>>
>> When I use the version mpich2-1.3.2 with the process manager hydra and
>> I run he "mpirun /bin/hostname" command i got the following error:
>>
>> [mpiexec at da830] HYDU_create_process
>> (/mnt/ti_am1707_root/home/default/mpich2-1.3.2/src/pm/hydra/utils/launch/launch.c:69):
>> execvp error on file ssh (No such file or directory)
>>
>> Do I need ssh when I use hydra and ch3:sock?!
>>
>> Harald
>>
>> On 11.11.2011 22:51, Pavan Balaji wrote:
>>>
>>> Does the following command work:
>>>
>>> % mpirun /bin/hostname
>>>
>>> If this gets a segmentation fault, the problem might be with mpirun.
>>> In this case, you can try to debug it using:
>>>
>>> % gdb mpirun
>>> (gdb) r /bin/hostname
>>>
>>>   -- Pavan
>>>
>>> On 11/11/2011 03:31 AM, Harald Schuster wrote:
>>>> Hi
>>>>
>>>> I now tried the cpi example from the mpich2 sources and I also got a
>>>> segmentation fault. I used the following configuration:
>>>>
>>>> CFLAGS="-static" CC=arm-linux-gcc ./../configure
>>>> --prefix=/mnt/ti_am1707_root/usr/mpich2-install --with-pm=hydra
>>>> --disable-f77 --disable-fc --disable-cxx --enable-g=dbg,mem,log
>>>> --with-device=ch3:sock --host=arm-linux
>>>>
>>>> How is it possible to trace the execution of the program?!
>>>>
>>>>
>>>>
>>>> On 10.11.2011 16:33, Harald Schuster wrote:
>>>>> I added the config.log to this mail but i changed the pm from hydra to
>>>>> gforker only for testing and know the helloWorld example runs but when
>>>>> I tried a example with a broadcast the programm stops without any
>>>>> error but it not finishes. The gforker and hydra uses sockets or?
>>>>>
>>>>> On 10.11.2011 16:12, Jeff Hammond wrote:
>>>>>> I think it will help if you post config.log.
>>>>>>
>>>>>> Can you run the test that fails within GDB or Valgrind? I do not
>>>>>> think that mpirun itself is segfaulting, but rather that it activates
>>>>>> the code path that does. Maybe this much was clear to you already.
>>>>>>
>>>>>> Jeff
>>>>>>
>>>>>> On Thu, Nov 10, 2011 at 3:33 AM, Harald Schuster
>>>>>> <schuster at technikum-wien.at>  wrote:
>>>>>>> Hi
>>>>>>>
>>>>>>> I use MPICH2 on my normal Linux PC and it works fine. My next goal
>>>>>>> is to run
>>>>>>> MPICH2 on a arm926 (am1707) which is simulated in SimSoc and where a
>>>>>>> normal
>>>>>>> linux OS is running. The linux is compiled with the buildroot
>>>>>>> 2010.05 and I
>>>>>>> use the arm-linux-gcc 4.3.4. I tried to make the the mpich2 with the
>>>>>>> arm-linux-gcc and it works. I used the following configuration:
>>>>>>>
>>>>>>> CFLAGS="-static" CC=arm-linux-gcc ./../configure
>>>>>>> --prefix=/mnt/ti_am1707_root/usr/mpich2-install --with-pm=hydra
>>>>>>> --disable-f77 --disable-fc --disable-cxx --disable-sharedlibs
>>>>>>> --host=arm-linux --with-device=ch3:sock
>>>>>>>
>>>>>>> Also the make install process works fine. Then I compiled a small
>>>>>>> helloWorld
>>>>>>> example with the mpicc for arm and it also works. When I run the
>>>>>>> helloWorld
>>>>>>> example on the simulated processor I always got an segmentation
>>>>>>> fault. For
>>>>>>> starting the program I use the following command:
>>>>>>>
>>>>>>> mpirun -np 1 helloWorld
>>>>>>>
>>>>>>> When I start the helloWorld program without the mpirun command I got
>>>>>>> the
>>>>>>> right output. So I think the segmentation fault is caused by the
>>>>>>> mpirun
>>>>>>> command but I don't know where and what I can do to solve the
>>>>>>> problem.
>>>>>>>
>>>>>>> Best regards
>>>>>>> Harald
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>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
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>>>>
>>>>
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji