|Version 3 (modified by jmstone, 6 years ago) (diff)|
Below are data from both strong (using fixed problem size) and weak (using increasingly larger problem size) scaling tests that measure the parallel performance of Athena on a variety of different machines. Since Athena is bases on an unsplit explicit update, it shows excellent scaling, even with SMR.
In these plots, efficiency is defined as the per-core performance scaled to the performance on one core.
Red Storm (Cray XT-3)
In the above figure, SN uses one core per node, VN uses two cores per node.
Kraken (Cray XT)
Ranger (Linux cluster)
Ranger web site.
In the above, black lines are for a single level mesh, red lines are for a two-level SMR mesh.