Speaker
Description
As Plasma Control Systems (PCS) grow beyond the resource constraints of single, monolithic
computers, the need similarly increases for real-time communication between physical
computers. Three experiments sharing a common baseline framework (the General Atomics
(GA) PCS) approach the situation with similar high level concepts manifested through different
lower level implementations. NSTX-U is building a native PCIe interconnect solution based on
Dolphin products. DIII-D recently upgraded to an Infiniband solution. KSTAR is currently using
a reflective memory infrastructure. These three approaches have differing characteristics and
tradeoffs that affect the real-time system determinism, latency, and overall capability. They
similarly have different implementation requirements and difficulties that affect scalability and
flexibility of the resulting real-time systems. The Princeton University Plasma Physics
Laboratory (PPPL) has gained experience working with these various implementations, and has
developed a detailed analysis of appropriate use cases and considerations that affect real-time
system design decisions. Additionally, the laboratory is supporting efforts to create real-time
safe abstractions on top of the underlying architectures to establish a dynamic set of
communication layer features adaptable to the limitations of the enabling technology.
| Minioral | Yes |
|---|---|
| Speaker | Keith Erickson |
| Institute | Princeton University |
| Country | USA |
