RAO-INT Instructions Will No Longer Premiere With Intel Grand Ridge

[phoronix]

Phoronix: RAO-INT Instructions Will No Longer Premiere With Intel Grand Ridge

Added last year to the open-source compilers were Intel RAO-INT instructions for upcoming Intel CPUs. RAO-INT as new atomic ADD / AND / OR / XOR instructions were to debut with Intel's Grand Ridge SoC but now that is apparently no longer the case...

https://www.phoronix.com/news/Intel-RAO-INT-Dropped-GR

[archkde]

Inb4 they simply forgot to include the instructions in the silicon design…

[coder]

Here's some plausible speculation that RAO-INT (Remote Atomic Operations) are aimed at CXL use cases:

https://www.realworldtech.com/forum/?threadid=209117&curpostid=209133

[ayumu]

Chicken bits put to good use.

Meantime, RISC-V advances, and will eventually replace x86.