By: Michael S (already5chosen.delete@this.yahoo.com), August 16, 2014 12:55 pm
Room: Moderated Discussions
Maynard Handley (name99.delete@this.name99.org) on August 16, 2014 9:35 am wrote:
>
> As a technical matter, the changes to POWER ISA have all, as far as I know, been on
> the OS side; mostly to give the hypervisor better control over paging. I think there's
> been one change to the collection of user-level sync instructions. I agree with your
> stance that ISA matters, but I don't think this aspect of POWER proves the point.
>
After Power4 IBM added plenty of stuff on FP side.
First Altivec (Power5)
Then 2-wide DPFP SIMD.
Then (or was it in the same core as DPFP SIMD? I don't remember) 64 SIMD registers.
At some point they also added DFP, but that's very specialized and, IMHO, done more for marketeering checkbox then due to real need of real customers.
I don't remember what's going on encryption side. Everybody seem to have AES, does not Power has it too?
>
> As a technical matter, the changes to POWER ISA have all, as far as I know, been on
> the OS side; mostly to give the hypervisor better control over paging. I think there's
> been one change to the collection of user-level sync instructions. I agree with your
> stance that ISA matters, but I don't think this aspect of POWER proves the point.
>
After Power4 IBM added plenty of stuff on FP side.
First Altivec (Power5)
Then 2-wide DPFP SIMD.
Then (or was it in the same core as DPFP SIMD? I don't remember) 64 SIMD registers.
At some point they also added DFP, but that's very specialized and, IMHO, done more for marketeering checkbox then due to real need of real customers.
I don't remember what's going on encryption side. Everybody seem to have AES, does not Power has it too?
