Code scaling

Version 1.4 (1D slab parallelization)

Scaling measured using IBM Power 6 (SP6 at CINECA, 2011)

 

N.cores Computing time (s) Relative Scaling N.cores Computing time(s) Relative Scaling
1024³, Navier-Stokes equations Mesh size: 1024² x 2048, Navier-Stokes solution
64  264.8 64 (assumed) 128 280.7 128 (assumed)
128  131.6 128.7 256 142.2 252.5
256  63.1 268.7 512 68.7 522.9
512  34.2  495.5 1024 36.3 989.7
1024  17.3  979.6 Mesh size: 1024² x 2048, Boussinesq equation
2048³, Navier-Stokes equations   128 370.5 128 (assumed)
512 716.1 512(assumed) 256 189.5 250.3
1024 362.2 1012.2 512 94.9 499.8
2048 207.1 1771.1 1024 50.4 940.4

 

Version 1.7 (2D pencil parallelization)

Scaling measured on: Curie Thin nodes (at GENCI-CEA), IBM BlueGene/Q (Fermi at CINECA)

Scaling DNS code v 1.7

Credits