Hierarchical asymmetric mesh with virtual routers

A method, comprising:

• constructing a plurality of clusters, each of the clusters comprising a single router;
• for at least one of the plurality of clusters, connecting one or more cores to the single router of the at least one of the plurality of clusters;
• and
• connecting said single router of a first one of the plurality of clusters to said single router of a second one of the plurality of clusters.

A computer readable storage medium storing instructions for executing a process, the instructions comprising:

• constructing a plurality of clusters, each of the clusters comprising a single router;
• for at least one of the plurality of clusters, connecting one or more cores to the single router of the at least one of the plurality of clusters;
• and
• connecting said single router of a first one of the plurality of clusters to said single router of a second one of the plurality of clusters.