[mpich-discuss] mpich runs

[Luis Del Castillo]

Hi fellows my name is Luis Alejandro Del Castillo and am  having issues to figure it out why if run  mpirun twice with the same configuration give me 2 different answers.

 

wrf at cl2master-> ./mpirun -np 5 ../examples/cpi

Process 0 on cl2master

Process 1 on node1

Process 3 on node3

Process 4 on node4

Process 2 on node2

pi is approximately 3.1416009869231245, Error is 0.0000083333333314

wall clock time = 0.007812

wrf at cl2master-> ./mpirun -np 5 ../examples/cpi

Process 0 on cl2master

Process 3 on node3

Process 1 on node1

Process 2 on node2

Process 4 on node4

pi is approximately 3.1416009869231245, Error is 0.0000083333333314

wall clock time = 0.000000

wrf at cl2master->

 

I have a Quad Core Beowulf cluster with 11 nodes (1 master , 10 slaves) all the same configuration.

I want to do this because I am trying to explain the performance doing some graph. 

 

Thanks 

 

 

Luis Alejandro Del Castillo Riley

luis.delcastillo at cathalac.org

Soporte de Tecnología / IT Support  

CATHALAC

www.cathalac.org

Tel: (507)317-3235 (directo)

Tel: (507)317-3200 (Central Telefónica)

Fax: (507)317-3299

111 Ciudad del Saber, Clayton, Panamá

Apartado 0843-03102, Panamá

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/mpich-discuss/attachments/20101019/4a9fd780/attachment.htm>