[mpich-discuss] A problem in running mpi code on ubuntu 13.10

ehsan saei ehsan.saei at gmail.com
Tue Jan 28 10:30:31 CST 2014


Thanks but, still the same result


On Tue, Jan 28, 2014 at 5:20 PM, Kenneth Raffenetti <raffenet at mcs.anl.gov>wrote:

> Try running 'sudo update-alternatives --set mpi /usr/include/mpich2'. This
> tells the Ubuntu alternatives system to use mpich2 by default.
>
> Ken
>
>
> On 01/28/2014 10:15 AM, ehsan saei wrote:
>
>> Yes you are right. I have both of them. Now what is the solution for
>> this machine?
>>
>>
>> On Tue, Jan 28, 2014 at 4:23 PM, Kenneth Raffenetti
>> <raffenet at mcs.anl.gov <mailto:raffenet at mcs.anl.gov>> wrote:
>>
>>     This problem usually comes from having a mix of openmpi and mpich
>>     both installed on the same machine. Is that the case? You can search
>>     for openmpi by running something like this from the command line:
>>
>>        dpkg -l | grep openmpi
>>
>>
>>     On 01/28/2014 08:50 AM, ehsan saei wrote:
>>
>>         for size the output is 1 independent from the number of
>>         processed that I
>>         declare with "mpiexec -n ..."
>>
>>
>>         On Tue, Jan 28, 2014 at 3:12 PM, Reuti
>>         <reuti at staff.uni-marburg.de <mailto:reuti at staff.uni-marburg.de>
>>         <mailto:reuti at staff.uni-__marburg.de
>>
>>         <mailto:reuti at staff.uni-marburg.de>>> wrote:
>>
>>              Am 28.01.2014 um 11:18 schrieb ehsan saei:
>>
>>               > I still have the problem with mpi
>>
>>              In the program you cited you don't output the size. Can you
>>         output
>>              the size in addition?
>>
>>              -- Reuti
>>
>>
>>
>>               > On Mon, Jan 27, 2014 at 4:47 PM, ehsan saei
>>         <ehsan.saei at gmail.com <mailto:ehsan.saei at gmail.com>
>>              <mailto:ehsan.saei at gmail.com
>>
>>         <mailto:ehsan.saei at gmail.com>>> wrote:
>>               > which mpicxx returns: /usr/bin/mpicxx
>>               >
>>               >
>>               > On Mon, Jan 27, 2014 at 4:44 PM, Reuti
>>              <reuti at staff.uni-marburg.de
>>         <mailto:reuti at staff.uni-marburg.de>
>>         <mailto:reuti at staff.uni-__marburg.de
>>
>>         <mailto:reuti at staff.uni-marburg.de>>> wrote:
>>               > Am 27.01.2014 um 16:41 schrieb ehsan saei:
>>               >
>>               > > I compile the code with:  mpicxx main.cpp
>>               > > and run it with: mpiexec -n 8 ./a.out
>>               >
>>               > Does `which mpicxx` resp. `which mpiexec` point to the
>>         intended
>>              target?
>>               >
>>               > -- Reuti
>>               >
>>               >
>>               > > I use a single computer with dual core core i3
>>               > >
>>               > >
>>               > > On Mon, Jan 27, 2014 at 4:39 PM, Wesley Bland
>>              <wbland at mcs.anl.gov <mailto:wbland at mcs.anl.gov>
>>         <mailto:wbland at mcs.anl.gov <mailto:wbland at mcs.anl.gov>>> wrote:
>>               > > The code is fine. The problem is most likely either
>>         the way
>>              you're executing your code or the way you installed it. Can
>>         you tell
>>              us how you executed in on the command line to start?
>>               > >
>>               > > Thanks,
>>               > > Wesley
>>               > >
>>               > >
>>               > >
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