Inciter
Navier-Stokes solver for engineering flows
Inciter contains distributed-memory-parallel fluid solvers for complex 3D engineering geometries. The software implementation facilitates effective use of any multi-CPU computer from a laptop to the largest distributed-memory machines, combining data-, and task-parallelism on top of the Charm++ runtime system. Charm++'s execution model is asynchronous by default, allowing arbitrary overlap of computation and communication. Built-in automatic load balancing enables redistribution of arbitrarily heterogeneous computational load based on real-time CPU load measurement at negligible cost. The runtime system also features automatic checkpointing, fault tolerance, resilience against hardware failure, and supports power-, and energy-aware computation.
Computational domains of arbitrary shapes are discretized into tetrahedron elements and decomposed into small chunks assigned to different CPUs. The number of chunks may be more than the number of CPUs, allowing overdecomposition, useful for effective cache utilization and automatic load balancing. The solution along partition boundaries, that exists on multiple processing elements, is made consistent with asynchronous communication which hides latencies by enabling overlapping of computation and communication.
Inciter contains multiple solvers. The numerical methods belong to the family of continuous Galerkin finite element methods storing solution values at nodes of the computational mesh. See the links below for more details.
Solvers
- RieCG: method, examples, performance
- KozCG: method, examples
- ZalCG: method, examples, performance