[Libre-soc-dev] IBM releases a2o core source

Luke Kenneth Casson Leighton lkcl at lkcl.net
Wed Sep 16 10:30:30 BST 2020

On Wednesday, September 16, 2020, Lauri Kasanen <cand at gmx.com> wrote:

> Hi,
> https://github.com/openpower-cores/a2o
> Previously IBM released the a2i core (vhdl). Now they released a
> less-threads-but-faster-per-thread version of it. This core is
> out-of-order unlike the predecessor.

yes, pretty amazing.  dual issue completion.  also v2.07B where a2i is 2.06b

the open release is so recent that the team on it haven't yet had a chance
to go over it fully.

POWER10, holy shit.  8 issue, 1024 instructions in-flight.  2 simultaneous
SIMD instructions each of which is 128 bit so 4x FP64 or 8x FP32 or 32x
8bit integer *per core* and there are 16 cores on the single socket
version.  same TDP as POWER9.

like NVMe speeds it is another one of those jumps that you can't quite get
your head round.


crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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