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   /  Amiga OS4.x \ Workbench 4.x
      /  Epsilon's Amiga X1000 Blog Updated
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PosterThread
pavlor 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 11-Jan-2016 9:54:57
#501 ]
Elite Member
Joined: 10-Jul-2005
Posts: 8623
From: Unknown

@tlosm

Quote:
if i use blender with gpu accelerations the rendering become 1000 times more faster


As I wrote...

Quote:
same is Fs-uae ... if i dont use gl it become sloooooooow


Well, GL is used there for display, certainly not for FPU emulation.

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tlosm 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 11-Jan-2016 10:07:44
#502 ]
Elite Member
Joined: 28-Jul-2012
Posts: 2467
From: Amiga land

@pavlor

Quote:
Well, GL is used there for display, certainly not for FPU emulation.

yes this is sure :) but fast gpu board make some fpu games run faster
eg quake.

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BSzili 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 11-Jan-2016 10:41:20
#503 ]
Regular Member
Joined: 16-Nov-2013
Posts: 284
From: Unknown

@tlosm

Wishful thinking again. With MiniGL Most of the graphics pipeline is done on the CPU, this is where the slow FPU will hit the hardest. On the flipside, your Radeon HD cards will stay nice and cool, since almost none of its processing power will be utilized.

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tlosm 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 11-Jan-2016 13:19:32
#504 ]
Elite Member
Joined: 28-Jul-2012
Posts: 2467
From: Amiga land

@BSzili

Quote:
ol, since almost none of its processing power will be utilized.


I know this ... and this is the most sed thing ...

Last edited by tlosm on 11-Jan-2016 at 01:19 PM.

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cdimauro 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 11-Jan-2016 17:52:53
#505 ]
Super Member
Joined: 29-Oct-2012
Posts: 1845
From: Germany

@pavlor

Quote:

pavlor wrote:
@cdimauro

Quote:
imagine UAE that generates GPU offloading commands for each FP operation).


Although I agree with your general perception of GPU usage for FP operations, this example is pure nonesense. If you don´t want to play Quake under UAE, FPU emulation is unnecessary.

It depends on the type of software that you're running, and Quake is a legimate software, as well as others which require an FPU.

Anyway, it was just an example of software which cannot make good use of GPU offloading, unless you like to see a slowmotion , to remark that such concept generalization is plainly wrong.
Quote:
Quote:
Thinking to use the GPU to solve Tabor's FPU weakness isn't feasable nor desirable: it's something to totally avoid.


There are applications, where such use may make sense (eg. Blender).

Absolutely, but the problem is that they are specific cases, and the concept cannot generically applied to every kind of software.

GPU offloading makes sense only if you can send a certain amount of data to the GPU which can be processed "locally", and the overall gain of the round trip is "profitable". That's a common scenario for 3D rendering, image filtering, signal analysis, etc., but they aren't general cases.

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pavlor 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 11-Jan-2016 18:06:18
#506 ]
Elite Member
Joined: 10-Jul-2005
Posts: 8623
From: Unknown

@cdimauro

Quote:
It depends on the type of software that you're running, and Quake is a legimate software, as well as others which require an FPU.


I bet native Quake would be much faster than Quake under UAE...

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cdimauro 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 11-Jan-2016 18:10:41
#507 ]
Super Member
Joined: 29-Oct-2012
Posts: 1845
From: Germany

@pavlor: easy man. You already know that QEMU doesn't yet JIT PowerPC FPU code.

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Epsilon 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 9:31:30
#508 ]
Regular Member
Joined: 29-Apr-2009
Posts: 444
From: Adelaide, Australia

Hi All,

Today I have added a new blog entry looking at Debian 8 on the AmigaOne A1222, which I got working this week, booting from hard disk with AmigaOS themes and more.

Link is here:

http://amigax1000.blogspot.com.au/2016/01/debian-linux-on-amigaone-a1222.html

I hope you enjoy it!



Catcha,
Epsilon

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Birbo 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 9:47:05
#509 ]
Cult Member
Joined: 5-Apr-2007
Posts: 520
From: Zurich, Switzerland

@Epsilon

Thanks a lot! Awesome!

Your blog is one of the best things about Amiga in the Internet.

You are probably the best Marketing spot right now.

I enjoy reading your blog and it looks great. Must be a lot of work.


Thank you

Birbo

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xeno74 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 10:28:25
#510 ]
Cult Member
Joined: 15-Dec-2010
Posts: 660
From: Unknown

@Epsilon

Many many many thanks!!!!!!!!

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kamelit0 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 14:14:23
#511 ]
Cult Member
Joined: 30-Jun-2011
Posts: 610
From: Unknown

This processor is 32bits, the RAM is 64bit, the address bus is 36bits, so I suppose that you can have up to 64GB or RAM no?

Kamelito

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NutsAboutAmiga 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 16:28:58
#512 ]
Elite Member
Joined: 9-Jun-2004
Posts: 10798
From: Norway

@kamelit0

https://en.wikipedia.org/wiki/PowerPC_e500#e500v2


e500v2

Key improvements in the e500v2 over the e500v1 include:
Increase from 32-bit (4 GiB) to 36-bit (64 GiB) physical address space. This change means that e500v2-based devices often use a more advanced board support package (BSP) than e500v1-based devices, as various peripheral units have moved to physical addresses higher than 4 GiB.
Addition of 1 GiB and 4 GiB variable-page sizes
Addition of DPESFP (double-precision embedded scalar floating point) support. Building on top of SPESFP, these instructions access both halves of the 64-bit integer register.
Doubling in size and associativity of the MMU's second-level 4K-page array (from 256-entry 2-way to 512-entry 4-way)
Increase from 3 to 5 maximum outstanding data cache misses
Addition of the Alternate Time Base for cycle-granularity timestamps


64bit registers = 64bit CPU, PowerPC 64bit is backwards compatible with 32bit.

Since PowerPC instructions (even on 64-bit PowerPCs) are all 32 bits in length, loading an arbitrary 32-bit immediate into a register obviously takes at least 2 instructions.

http://www.csd.uwo.ca/~mburrel/stuff/ppc-asm.html

You load a 32bit value, and then you or it with a 32bit value this gives you 64bit value in the register, this how 64bit PowerPC works.

Once the registers are loaded every other instruction works as normal.

Last edited by NutsAboutAmiga on 15-Jan-2016 at 04:35 PM.

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cdimauro 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 17:21:06
#513 ]
Super Member
Joined: 29-Oct-2012
Posts: 1845
From: Germany

@NutsAboutAmiga

Quote:

NutsAboutAmiga wrote:
@kamelit0

https://en.wikipedia.org/wiki/PowerPC_e500#e500v2


e500v2

Key improvements in the e500v2 over the e500v1 include:
Increase from 32-bit (4 GiB) to 36-bit (64 GiB) physical address space. This change means that e500v2-based devices often use a more advanced board support package (BSP) than e500v1-based devices, as various peripheral units have moved to physical addresses higher than 4 GiB.
Addition of 1 GiB and 4 GiB variable-page sizes
Addition of DPESFP (double-precision embedded scalar floating point) support. Building on top of SPESFP, these instructions access both halves of the 64-bit integer register.
Doubling in size and associativity of the MMU's second-level 4K-page array (from 256-entry 2-way to 512-entry 4-way)
Increase from 3 to 5 maximum outstanding data cache misses
Addition of the Alternate Time Base for cycle-granularity timestamps


64bit registers = 64bit CPU, PowerPC 64bit is backwards compatible with 32bit.

Since PowerPC instructions (even on 64-bit PowerPCs) are all 32 bits in length, loading an arbitrary 32-bit immediate into a register obviously takes at least 2 instructions.

http://www.csd.uwo.ca/~mburrel/stuff/ppc-asm.html

You load a 32bit value, and then you or it with a 32bit value this gives you 64bit value in the register, this how 64bit PowerPC works.

Once the registers are loaded every other instruction works as normal.

That's wrong. Having 64-bit general purpose registers does NOT mean that you have a 64-bit PowerPC CPU.

In fact, the e500v2 is still a 32-bit PowerPC CPU, even with 64-bit registers, which are only used by the custom FPU which this chip is using.

BTW, you can load 64-bit values with proper, a specific instruction, which isn't in the 64-bit PowerPC ISA. But, of course, you cannot use it for general purpose computations: only for handling two single precision floating point values, or one double precision.

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kyle 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 18:06:04
#514 ]
Cult Member
Joined: 15-Oct-2006
Posts: 851
From: Livorno, Italy

@Epsilon

In the last pic I see also the ACube logo, a clear sign of cooperation between them and A-Eon for the development and manufacturing of this board

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Birbo 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 15-Jan-2016 18:10:13
#515 ]
Cult Member
Joined: 5-Apr-2007
Posts: 520
From: Zurich, Switzerland

@kyle

That's nothing new I think.

But what is the AEON Open Source Logo?

Has anyone seen that before?

Last edited by Birbo on 15-Jan-2016 at 06:12 PM.

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Epsilon 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 16-Jan-2016 0:53:41
#516 ]
Regular Member
Joined: 29-Apr-2009
Posts: 444
From: Adelaide, Australia

@all

Thanks for the comments. I am glad you are enjoying my blog.

I have added a new blog entry today looking at the updates to Amiga Racer on the AmigaOne X1000 as the game is rapidly changing over the past few months.

Link is here:

http://amigax1000.blogspot.com.au/2016/01/amiga-racer-game-update-for-x1000.html

Please enjoy




Catcha,
Epsilon

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Birbo 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 16-Jan-2016 9:22:53
#517 ]
Cult Member
Joined: 5-Apr-2007
Posts: 520
From: Zurich, Switzerland

@Epsilon

I've seen a blue A-EON Open Source Logo in your previous post (A1222 / last screenshot).

Do you know what this is about?



Last edited by Birbo on 16-Jan-2016 at 09:23 AM.

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tlosm 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 16-Jan-2016 9:46:13
#518 ]
Elite Member
Joined: 28-Jul-2012
Posts: 2467
From: Amiga land

@Birbo

it is the logo of linux crew of Aeon. Christian, Alex and Darren are there

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A 500 + ; CDTV; CD32;
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Birbo 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 16-Jan-2016 9:54:25
#519 ]
Cult Member
Joined: 5-Apr-2007
Posts: 520
From: Zurich, Switzerland

@tlosm

Thank you

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Epsilon 
Re: Epsilon's Amiga X1000 Blog Updated
Posted on 21-Jan-2016 11:11:13
#520 ]
Regular Member
Joined: 29-Apr-2009
Posts: 444
From: Adelaide, Australia

Hi All,

Today I have written a new blog entry looking at OS4 themes and E-UAE JIT Classic Amiga emulation on MorphOS 3.9.

Link is here:

http://amigax1000.blogspot.com.au/2016/01/morphos-39-os4-theme-and-classic-amiga.html

I hope you enjoy it!



Catcha,
Epsilon

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