And tiles of processors like »LOKI and »XMOS approach from the opposite direction, starting with mini CPUs.
LOKI enables ALUs of neighbouring cores to be used as part of the current instruction. This is circuit switching of the control nets between the instruction decoder and the execution units.
XMOS language XC extends C with channel communication primitives (packet switching). »Xcore-200
Both LOKI and XMOS support low-overhead message passing between cores.
| 8: (C) 2012-17, DJ Greaves, University of Cambridge, Computer Laboratory. |