3 ms·
>Runs fine on commodity clusters. Kind of.... For simple, low communication jobs this is true. But when you start trying to find the eigenvectors of a large
by spott 12y ago
>Runs fine on commodity clusters.
Kind of.... For simple, low communication jobs this is true. But when you start trying to find the eigenvectors of a large sparse matrix, communication becomes your bottleneck, at which point MPI on commodity clusters (those without a really fancy interconnect) "works", but not fast enough to be useful.
- vonmoltke 12y agoI don't think "really fancy interconnects" makes a cluster not commodity, since the original post in this thread is about supercomputer processors. You can put Infiniband in any system with a PCI-e 3.0 bus.
- dhaivatpandya 12y agoCommunication would become a bottleneck regardless of whether you're using MPI or something else. The problem you're talking about has nothing to do with MPI; it is intrinsic to distributed computing itself.
- art187 12y agoAnd what system on commodity clusters is fast enough in this case?