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      /  Poll of CPU architecture interest for AmigaOS
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Poll : Which CPU architecture are you most interested in for AmigaOS in the future?
68k
ARM
POWER
PowerPC
RISC-V
x86_64
other
 
PosterThread
OlafS25 
Re: Poll of CPU architecture interest for AmigaOS
Posted on 4-May-2019 9:32:54
#341 ]
Elite Member
Joined: 12-May-2010
Posts: 5450
From: Unknown

@ne_one

no problem... you just need a couple of millions to buy the rights to amigaos, then you must hire a team of software and hardware developers and pay them fulltime, and you must design custom hardware or use something off-the-shelf. If you do custom hardware you must pay for the design and prepay for mass-production. And you need a concept why people should use amigaos and not linux, mac or windows

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Jose 
Re: Poll of CPU architecture interest for AmigaOS
Posted on 4-May-2019 15:04:05
#342 ]
Cult Member
Joined: 10-Mar-2003
Posts: 925
From: Unknown

@Rob

I stand corrected then! It's really unfortunate because looking at these new Power9 for the desktop stuff that's coming out I really don't feel like buying an X5000 anymore!

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JosÚ

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megol 
Re: Poll of CPU architecture interest for AmigaOS
Posted on 4-May-2019 15:15:20
#343 ]
Regular Member
Joined: 17-Mar-2008
Posts: 288
From: Unknown

@OlafS25

For me a reinvented "Amiga" would only need the original OS for a legacy subsystem and that could likely be replaced with AROS.

@Jose

SMP wouldn't happen without specific hardware support. Memory protection wouldn't happen without a completely different OS design.
As for the suggestion that Power9 would be at an advantage compared to x86 I can't agree as Power9 takes a huge hit in performance when protecting against Spectre and Meltdown.

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Rose 
Re: Poll of CPU architecture interest for AmigaOS
Posted on 4-May-2019 15:30:38
#344 ]
Cult Member
Joined: 5-Nov-2009
Posts: 578
From: Unknown

@Jose

Quote:
3- Power9 being actually competitive on a per watt basis with x86, specially after the fixes for Spectre and Meltdown are applied.


Because Power9 is Spectre/Meltdown proof?
https://www.ibm.com/support/knowledgecenter/en/POWER9/p9hby/p9hby_speculative_execution_control.htm
And yes, there's performance hit there too.
https://www.phoronix.com/scan.php?page=article&item=power9-spectre-benchmarks&num=2

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Jose 
Re: Poll of CPU architecture interest for AmigaOS
Posted on 4-May-2019 17:26:29
#345 ]
Cult Member
Joined: 10-Mar-2003
Posts: 925
From: Unknown

Interesting, that's not the impression I got from viewing that youtube video with those guys that made the Talos II. It was said that after the patches are made, X86 takes a big hit in performance/watt.

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JosÚ

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Rose 
Re: Poll of CPU architecture interest for AmigaOS
Posted on 4-May-2019 22:11:16
#346 ]
Cult Member
Joined: 5-Nov-2009
Posts: 578
From: Unknown

@Jose

Quote:

Jose wrote:
Interesting, that's not the impression I got from viewing that youtube video with those guys that made the Talos II. It was said that after the patches are made, X86 takes a big hit in performance/watt.


One is independent site which tests hardware, other is marketing video. Believe which one you want.

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megol 
Re: Poll of CPU architecture interest for AmigaOS
Posted on 5-May-2019 10:50:02
#347 ]
Regular Member
Joined: 17-Mar-2008
Posts: 288
From: Unknown

@Jose

From Phoronix, testing overheads using Linux 5.0: "The Intel Core i7 8086K performance was down by 17% with these out-of-the-box protections for Spectre and Meltdown. The AMD Ryzen 7 2700X performance with its default Spectre mitigations was lower by just 3%"
https://www.phoronix.com/scan.php?page=article&item=linux50-spectre-meltdown

The reason for this difference between Intel and AMD is mostly due to AMD not being vulnerable to Meltdown. The Power9 is however vulnerable to Meltdown with the associated performance loss.

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