[mpich-discuss] calculated a execution time in a parallel programe

[Balaji, Pavan]

Please direct general parallel computing questions to stack overflow or other generic discussion Forums.  This mailing list is for MPICH related questions.

Regards,

  -- Pavan

> On Mar 4, 2015, at 7:45 AM, Chafik sanaa <san.chafik at gmail.com> wrote:
> 
> so I can not base my article on the execution time calculation in my own machine because I did not have a parallel machine?
> 
> 2015-03-04 0:43 GMT+01:00 Junchao Zhang <jczhang at mcs.anl.gov>:
> Yes. I believe your i5 machine has least two cores. So it is indeed a parallel machine. You should observe some speedup when you run program with two MPI processes. 
> 
> --Junchao Zhang
> 
> On Tue, Mar 3, 2015 at 5:44 AM, Chafik sanaa <san.chafik at gmail.com> wrote:
> I use the MPICH2 to parallelize my algorithm on an i5 machine, is the time calculated in this type of machinery is the time actually consumed or estimated in my programe? I ask this question because someone told me that if you do not work on a parallel machine then even if you calculate the execution time in your parallel algorithm and you compare it with the algorithm that you do not use parallelism is not correct.effectively I tried to compare the execution time of both programs but really I find that there's a accelerartion when I use the parallelism
> 
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--
Pavan Balaji  ✉️
http://www.mcs.anl.gov/~balaji

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