Re: RootMpi

Hello Tim and Rooters.
I was doing some research about what is the best way to measure performance in mpi.
I find some tools in https://svn.open-mpi.org/trac/mtt/wiki and netpipe-openmpi http://scl.ameslab.gov/ and based in this a write a basic design;
you can see the basic design in
http://rootmpi.blogspot.com/p/rootmpi.html#id.dlaetg1rn6jt in the picture testing.
I write a basic code to test time sending and reciev a TMatrixD object. https://github.com/omazapa/RootMpi/blob/master/mpi/test/SendRecvPerformance.cpp

The results

mpirun -machinefile machines -np 2 ./SendRecvPerformance Initial Time:120000 sec
Final Time:230000 sec
Time Diff:0.11 sec

But this was tested in a very old and small cluster http://hercules.udea.edu.co/ganglia/
xD just 11 cpus(one cpu peer computer) in a 1 Gb lan network.

May is good idea try to test it in a good cluster.

2012/3/29 Omar Andrés Zapata Mesa <andresete.chaos_at_gmail.com>

> Hello Tim.
> this is a great question.
> The idea is to write a performance test that measures the entire data
> transmission, double precision, arrays and objects and regarding the
> transmission of objects we need to get the time in serializing and
> deserializing.
> This should be for peer to peer and collective communication also Mpi's
> reduce operations and for synchronous and asynchronous communication.
> Let me write something soon to measure the performance of the
> integration's algorithms, the data will be put in the blog and I will tell
> you this in the mailing list.
>
>
> Thanks Tim.
> best wishes
>
>
> At the moment I don't have a performance test, but let me to write
> something
>
> 2012/3/29 Tim dos Santos <dos.santos_at_physik.uni-wuppertal.de>
>
>> Hi Omar,
>>
>> I'm curious, have you recorded some performance measurements yet, showing
>> the net benefit of MPI'ing e.g. an integration to n Cores, and the like?
>>
>> Keep up the good work!
>>
>> Tim
>>
>>
>>
>> Am 28.03.2012 22:18, schrieb Omar Andrés Zapata Mesa:
>>
>> Hello Rooters
>> The GSoC proposal was submitted, the information in the blog was updated
>> http://rootmpi.blogspot.com/
>> You can download now the debian package to test the RootMpi's prototype
>> http://rootmpi.blogspot.com/2012/03/installing-root-libraries.html
>> Some feedback should be nice.
>> Thanks!
>>
>> --
>> Omar Andres Zapata Mesa
>> Fundamental Interaction Phenomenology Gruop (Gfif)
>> Head Developer
>> http://gfif.udea.edu.co
>> Gfif Developers (Gfif Dev)
>> Division of computer science
>> System Engineering Student
>> Universidad de Antioquia At Medellin - Colombia
>> Usuario Linux #490962
>>
>>
Received on Wed Apr 04 2012 - 18:02:26 CEST