Evaluation of Message Passing Communication Patterns in Finite Element Solution of Coupled Problems
Renato Elias (Federal Rural University of Rio de Janeiro)
Jose Camata (Federal University of Rio de Janeiro)
Albino Aveleda (Federal University of Rio de Janeiro)
Alvaro Coutinho (Federal University of Rio de Janeiro)
This work presents a performance evaluation of single node and subdomain communication schemes available in EdgeCFD, an implicit edge-based coupled fluid flow and transport code for solving large scale problems in modern clusters. A natural convection flow problem is considered to assess performance metrics. Tests, focused in single node multi-core performance, show that past Intel Xeon processors dramatically suffer when large workloads are imposed to a single node. However, the problem seems to be mitigated in the newest Intel Xeon processor. We also observe that MPI non-blocking point-to-point interface sub-domain communications, although more difficult to implement, are more effective than collective interface sub-domain communications.
Performance Analysis, ,