Charm++ parallel programming system

[François Tessier <francois.tessier AT inria.fr>]

Hi Nikhil,

Yes, it's this version of kNeighbor. Charm++ is built like that :

./build charm++ mpi-linux-x86_64-smp --with-production

And I run kNeighbor with this command :

./charmrun +p64 -machinefile ~/machinefile ./kNeighbor 64 50 262144 10 +balancer TreeMatchLB +LBDebug 1 +setcpuaffinity +pemap 0-7

++

François

___________________
François TESSIER
PhD Student at University of Bordeaux
Inria - Runtime Team
Tel : 0033.5.24.57.41.52
francois.tessier AT inria.fr
http://runtime.bordeaux.inria.fr/ftessier/
PGP 0x8096B5FA

On 03/10/2013 01:38, Nikhil Jain wrote:

Apologies for a no-response to your first email. Are you using the kNeighbor inside examples/charm++/loadbalancing? If yes, the default chare placement should be the same across multiple executions. Can you give details on your build, run command and any changes that might be relevant?

Thanks

Nikhil

On Wed, Oct 2, 2013 at 5:43 PM, François TESSIER <francois.tessier AT inria.fr> wrote:

Up? :-)

--
François TESSIER
PhD Student at University of Bordeaux
Inria - Runtime Team
Tel : 0033.5.24.57.41.52
francois.tessier AT inria.fr
PGP 0x8096B5FA

Le 11/09/2013 17:10, François Tessier a écrit :

Hello!

I'm writing a communication-aware load balancer for Charm++ (I was at
the PPL at the end of August for that) and I would like to compare my
chares placement between two version of my load balancer (the sequential
one and the distributed one).
The issue is when I run the sequential version two times with exactly
the same parameters : the chares placement is not the same. And when I
compare the chares communication matrices of the application (kNeighbor
in this case) after 10 iterations it's different too.

So here is my question : between two execution of the same application,
are the chares placed in the same way? If it's true, is there a way to
be sure that we will have the same initial chares placement?

Thanks for your help,

François

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