From sheer numbers alone, the open-source instruction-set architecture (ISA) known as RISC-V is gaining momentum in a pretty big way. And the announcements from the event were aplenty. Two big ones, from Western Digital (WD) and NXP (sort of, through the Open-ISA.org) prove that it?s all about the ecosystem, and both vendors are doing their part to make that ecosystem grow into something sustainable.