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

ehsan saei ehsan.saei at gmail.com
Tue Jan 28 10:42:20 CST 2014


Yes I recompiled but the result is the same as before.


On Tue, Jan 28, 2014 at 5:36 PM, Kenneth Raffenetti <raffenet at mcs.anl.gov>wrote:

> Just making sure, you recompiled your program with mpicxx before running
> it again?
>
>
> On 01/28/2014 10:30 AM, ehsan saei wrote:
>
>> Thanks but, still the same result
>>
>>
>> On Tue, Jan 28, 2014 at 5:20 PM, Kenneth Raffenetti
>> <raffenet at mcs.anl.gov <mailto: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>
>>         <mailto: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>>
>>                  <mailto: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>>
>>                       <mailto: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>>
>>                  <mailto: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>>
>>                  <mailto: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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