[mpich-discuss] Error while using MPI platform with CPP program

[Umesh Shisode]

Hi Junchao,

I sort out the problem for MPI_Send() and MPI_Recv(), as I requested in
last mail. Now I have one more difficulty which is how can I broadcast
class object using MPI_Bcast() function. In my case, class is Vector (you
can check it at vect_fun.h header file). I want to broadcast it to all
processes. I have used dynamic memory allocation in the code. Please help
me to solved the issue. I am waiting for your reply. Thanks.


Regards,

Umesh Sharad Shisode,
M.Tech in Modeling and Simulation(2013-15),
Centre for Modeling and Simulation,
University of Pune.

On Tue, May 19, 2015 at 7:51 AM, Umesh Shisode <ushisode1 at gmail.com> wrote:

> Sorry Junchao,
>
> Thanks for your reply. But my problem is with MPICH only. My question is
> how to send part of class object (in my case matrix object) from one
> process to another process using MPI_Send and receive using MPI_Recv
> functions. I tried a lot of way but couldn't do it. I hope you will help
> me. Thanks in advance. I have write a function to get the pointer address
> for first parameter of MPI_Send() function. Waiting for your reply.
>
> Regards,
>
> Umesh Sharad Shisode,
> M.Tech in Modeling and Simulation(2013-15),
> Centre for Modeling and Simulation,
> University of Pune.
>
> On Mon, May 18, 2015 at 7:31 PM, Junchao Zhang <jczhang at mcs.anl.gov>
> wrote:
>
>> Could not reproduce it with the latest MPICH.  If the problem is not
>> specific to MPICH, you'd better move your question to other forums like
>> stackoverflow.
>>
>> $mpirun -n 2 ./test
>> Matrix A :
>>
>> 1 2 3 4
>> 1 2 3 4
>> 1 2 3 4
>> 1 2 3 4
>>
>> Vector b before broadcast:
>>  1.000000,  2.000000,  3.000000,  4.000000
>> Matrix A column : 4
>> after sending:  lLim = 2 uLim = 4  for rank : 1
>> count = 8
>>
>> Matrix A column : 0for rank = 1
>> after receive:  lLim = 2 uLim = 4  for rank : 1
>> Ncol after broadcasting = 4
>>
>>
>> --Junchao Zhang
>>
>> On Mon, May 18, 2015 at 6:33 AM, Umesh Shisode <ushisode1 at gmail.com>
>> wrote:
>>
>>> Hello Sir / Madam,
>>>
>>> This is Umesh Sharad Shisode, pursuing Masters in Modeling and
>>> Simulation, at Centre for Modeling and Simulation, Pune University. I am in
>>> the final stage of my course. My Masters Thesis title is :
>>>
>>>     Development of Conjugate Gradient solver in OpenFOAM / CPP using MPI
>>>
>>> I am now doing MPI part of my project and facing some problems with MPI
>>> functions syntax. I am trying to use CPP class object with MPI functions
>>> but it is giving some error. Which I don't understand.
>>>
>>> Operating system         : LINUX
>>> Programming Language : CPP
>>>
>>> Commands I am using are :
>>>
>>>        > mpic++ main.cpp -o result
>>>        > mpirun -np 2 result
>>>
>>> Please help me to sort out this issue . I am attaching herewith zip file
>>> containing the code which I want to parallelize with the png file
>>> containing error. Waiting for your reply. Thanks in advance.
>>>
>>> Regards,
>>>
>>> Umesh Sharad Shisode,
>>> M.Tech in Modeling and Simulation(2013-15),
>>> Centre for Modeling and Simulation,
>>> University of Pune.
>>>
>>>
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>>
>>
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