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      /  aros research on smp
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PosterThread
Samurai_Crow 
Re: aros goes smp
Posted on 21-Sep-2013 15:03:52
#121 ]
Elite Member
Joined: 18-Jan-2003
Posts: 2060
From: Ft. Collins, Colorado, USA

@IntuitionAmiga

AROS hosted on Haiku still would run single-threaded. Once AROS Hosted on Linux gets multithreaded, then we can talk about AROS on Haiku. (BTW, I kind of like Haiku myself!)

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damocles 
Re: aros goes smp
Posted on 21-Sep-2013 15:46:11
#122 ]
Super Member
Joined: 22-Dec-2007
Posts: 1719
From: Unknown

@IntuitionAmiga

Quote:
Boot Haiku on a multicore i7 beast and you can see for yourself how it scales up, then run it on a single core P4 and you'll see how it still runs so smoothly with hundreds of threads running at a time.


Absolutely, there should be more then enough horsepower in a reasonable speed P4 to keep Haiku in more then enough resources for a snappy end user experience. My point is when a app/game that was designed for multicore is ported into a single core system (or the OS can only access one core in a multicore CPU because it's not SMP) , the end user experience is not going is not going to be a happy one. Clearly I am not talking about app/games that use trivial amount of system resources.

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Dammy

https://www.facebook.com/pages/Arix-OS/414578091930728
Unless otherwise noted, I only speak for myself.

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IntuitionAmiga 
Re: aros goes smp
Posted on 21-Sep-2013 15:57:19
#123 ]
Regular Member
Joined: 5-Sep-2013
Posts: 113
From: Unknown

@Samurai_Crow

Quote:
AROS hosted on Haiku still would run single-threaded. Once AROS Hosted on Linux gets multithreaded, then we can talk about AROS on Haiku. (BTW, I kind of like Haiku myself!)


I didn't mean hosted would be multithreaded, I was just referring to porting AROS-hosted "as is" to Haiku.

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IntuitionAmiga 
Re: aros goes smp
Posted on 21-Sep-2013 16:01:51
#124 ]
Regular Member
Joined: 5-Sep-2013
Posts: 113
From: Unknown

@damocles

Quote:
Absolutely, there should be more then enough horsepower in a reasonable speed P4 to keep Haiku in more then enough resources for a snappy end user experience. My point is when a app/game that was designed for multicore is ported into a single core system (or the OS can only access one core in a multicore CPU because it's not SMP) , the end user experience is not going is not going to be a happy one. Clearly I am not talking about app/games that use trivial amount of system resources.


A heavily multithreaded game/app written using the BeAPI is going to run more smoothly on a single core machine than a multithreaded app/game written using Windows/Linux APIs on the same hardware though, but I get your point.

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megol 
Re: aros goes smp
Posted on 22-Sep-2013 22:09:39
#125 ]
Regular Member
Joined: 17-Mar-2008
Posts: 190
From: Unknown

@damocles
Quote:
AMP is like kissing your own sister. SMP is the only way to fly, just ask the other OSs.


That depends... Current operating systems are actually becoming less symmetric in order to increase performance and power efficiency. Not even a multi-core system is fully symmetric after all.

Last edited by megol on 22-Sep-2013 at 10:12 PM.

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damocles 
Re: aros goes smp
Posted on 23-Sep-2013 15:27:08
#126 ]
Super Member
Joined: 22-Dec-2007
Posts: 1719
From: Unknown

@megol

Quote:
That depends... Current operating systems are actually becoming less symmetric in order to increase performance and power efficiency. Not even a multi-core system is fully symmetric after all.


Having an OS to use AMP means each core has it's own kernel that is largely unaware of the other cores. 10 years ago you could get away with it when systems were dual CPUs (vs today's common multi core), but today's standards set firmly at the SMP level.

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