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Old 21 August 2019, 17:34   #1
Gorf
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PPC Instruction Set Now Open Source

IBM is open sourcing the instruction set architecture of its Power family of processors. A FPGA softcore is already done and running on Xilinx.

https://openpowerfoundation.org/the-...ation-journey/


This could bring us some interesting new accelerators for classic Amigas and of course some new hardware for NG.

Last edited by Gorf; 21 August 2019 at 22:15.
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Old 22 August 2019, 13:59   #2
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What I didn't understand: is it just about the POWER architecture, used only by the big IBM servers, or is PowerPC included?

I really like this architecture. Opening PowerPC, similar to ARM, should have happened much earlier. Then we might have got more devices based on PPC instead of ARM, which offers a more powerful ISA.
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Old 22 August 2019, 14:51   #3
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Seems to be a really cool news !
Now have to read the link
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Old 22 August 2019, 15:29   #4
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I wish warp3D had an open source too.
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Old 23 August 2019, 01:10   #5
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Quote:
Originally Posted by phx View Post
What I didn't understand: is it just about the POWER architecture, used only by the big IBM servers, or is PowerPC included?

I really like this architecture. Opening PowerPC, similar to ARM, should have happened much earlier. Then we might have got more devices based on PPC instead of ARM, which offers a more powerful ISA.
Reading that suggest just the POWER cpus like used in iSeries etc. Still pretty cool.

But PowerPC would have been the dream, unless missed something here
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Old 23 August 2019, 06:45   #6
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Originally Posted by Gorf View Post
IBM is open sourcing the instruction set architecture of its Power family of processors. A FPGA softcore is already done and running on Xilinx.
I just wonder what this means. The ISA was open and documented to begin with, so there are no surprises waiting for anyone. Does that mean that IBM promises not to hunt down re-implementations of POWER by their lawyers? Then, again, why would anyone? New POWER processors are being made, but they have no share in the low-end low-cost market (where ARM has a standing), so an FPGA re-implementation doesn't hurt them at all. It is much too POWERless (pardon) power-less to be a competitor for them.
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Old 23 August 2019, 20:01   #7
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Yeah I don't really get this. I thought the whole point of POWER was to run AIX and all the associated enterprise level things that brings.
Maybe this is to encourage more linux involvement.
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Old 23 August 2019, 21:28   #8
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Maybe IBM are a little scared about RISC-V?
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Old 23 August 2019, 22:53   #9
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Some speculation here: Register
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Old 23 August 2019, 23:08   #10
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Reading that suggest just the POWER cpus like used in iSeries etc. Still pretty cool.

But PowerPC would have been the dream, unless missed something here
https://en.wikipedia.org/wiki/Power_ISA

PowerPC ist part of it since 2006 if I understand this correctly. So it should be legal now to build a fully PPC compatible CPU - royalty free.
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Old 24 August 2019, 14:47   #11
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Yeah I don't really get this. I thought the whole point of POWER was to run AIX and all the associated enterprise level things that brings.
Maybe this is to encourage more linux involvement.

You don't pick AIX anymore, AIX Feature development has slowed down massively since AIX6 which usually is not a good sign.


POWER8/9 has a couple of niches in large memory size systems, and most customers setting up new installs now just use Linux.


This POWER 'Opensourcing' feels desperate and 20 years too late.
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Old 24 August 2019, 19:31   #12
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I used to admin AIX, and together with POWER it is great stuff.
I'd take it over linux any time of day.
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Old 25 August 2019, 14:14   #13
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Originally Posted by Locutus View Post
You don't pick AIX anymore, AIX Feature development has slowed down massively since AIX6 which usually is not a good sign.


POWER8/9 has a couple of niches in large memory size systems, and most customers setting up new installs now just use Linux.


This POWER 'Opensourcing' feels desperate and 20 years too late.

We just moved over to power 9 on our iSeries where I work .
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Old 25 August 2019, 17:13   #14
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'iSeries' thats like saying you are in a hostage situation.
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