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Hardware News   Hardware News : OS4 patch 1.2 for Sam440ep/flex boards
   posted by marko on 11-Feb-2011 23:33:21 (6760 reads)
There's an update of sam440ep_setup on OS4Depot.

With this new setting read speed increase around 50% on Radeon PCI cards
(up to 42 MB/s on a M9 card) and around 200% on RadeonHD PCI cards





What it does:

On some Sam440ep boards, the MMUCR register is not set correctly at bootstrap.
This leads to poor write L1 cache performances.
The utility check the register, and if needed, modify it.

On all Sam440ep boards with a Radeon card enables read prefetching for graphic ram.
If a Radeon card is detected, the utility will modify the POM2 PCI registers to enable read prefetching.
This speed up reads for the gfx card from 15 MB/s to 30 MB/s on a M9 card.

Sets the Latency Timer on the 440ep PCI Bridge,
With this new setting read speed increase around 50% on Radeon PCI cards
(up to 42 MB/s on a M9 card) and around 200% on RadeonHD PCI cards

Author:
ACube Systems Srl

OS4Depot submitter:
Max m3x Tretene

Download:
sam440ep_setup.lha
    

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marko 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 11-Feb-2011 23:44:38
#1 ]
Super Member
Joined: 17-Dec-2007
Posts: 1804
From: Gothenburg, THE front side of Sweden ;), (via Finland), EU

Thanks, here's my benchmarks

RAGEMEM v0.37 results:

--- VIDEO BUS ---

Before any patches:
READ: 14 MB/Sec
WRITE: 50 MB/Sec

Before this patch (1.1):
READ: 29 MB/Sec
WRITE: 63 MB/Sec

After this patch (1.2):
READ: 41 MB/Sec
WRITE: 63 MB/Sec

Last edited by marko on 11-Feb-2011 at 11:45 PM.
Last edited by marko on 11-Feb-2011 at 11:45 PM.


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amigakit 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 11-Feb-2011 23:47:40
#2 ]
Amiga Kit
Joined: 28-Jun-2004
Posts: 2331
From: www.amigakit.com

Really good news- thanks Max!


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vox 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 0:23:24
#3 ]
Elite Member
Joined: 12-Jun-2005
Posts: 3725
From: Belgrade, Serbia

Good, interesting to see how things can be improved by software patches!


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Tomas 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 0:54:37
#4 ]
Elite Member
Joined: 25-Jul-2003
Posts: 4286
From: Unknown

Is there any point in installing this again on a sam 440ep with integrated gfx??
I already installed the previous version of same patch, but have no idea if this one will increase performance further.

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marko 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 2:44:44
#5 ]
Super Member
Joined: 17-Dec-2007
Posts: 1804
From: Gothenburg, THE front side of Sweden ;), (via Finland), EU

@Tomas

Check my benchmarks

Before this patch (1.1):
READ: 29 MB/Sec
WRITE: 63 MB/Sec

After this patch (1.2):
READ: 41 MB/Sec
WRITE: 63 MB/Sec

This is just the patch that you must run every time you boot up, just download, unpack and replace the old "Sam440ep_setup" file and reboot... and you are done.


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realize 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 3:03:20
#6 ]
Super Member
Joined: 14-Apr-2003
Posts: 1797
From: nyc

Yes very cool.. acube is very busy good job

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klx300r 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 3:24:05
#7 ]
Elite Member
Joined: 4-Mar-2008
Posts: 3515
From: Toronto, Canada

WoW..will try later tonight !..thanks again ACube for the great customer support


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gregthecanuck 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 5:42:20
#8 ]
Cult Member
Joined: 30-Dec-2003
Posts: 844
From: Vancouver, Canada

Nice work guys!

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delshay 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 5:56:03
#9 ]
Regular Member
Joined: 20-Sep-2008
Posts: 447
From: Unknown

thats impressive,and a very good step forward.


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pavlor 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 8:11:04
#10 ]
Elite Member
Joined: 10-Jul-2005
Posts: 9081
From: Unknown

Nice!

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ChrisH 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 9:50:21
#11 ]
Elite Member
Joined: 30-Jan-2005
Posts: 6673
From: Unknown

@ACube
Since you mention "PCI cards" it is not clear if the original Sam440 (with built-in graphics chip) will benefit.

You later mention "a M9 card" which might imply it will help such Sam440s, but it is not clear. (I recall it has an M9 chip, which is on the internal PCI bus, but maybe that is already set-up correctly?)


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kyle 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 10:53:08
#12 ]
Cult Member
Joined: 15-Oct-2006
Posts: 863
From: Livorno, Italy

Yes, Sam440 will benefit

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NutsAboutAmiga 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 10:59:53
#13 ]
Elite Member
Joined: 9-Jun-2004
Posts: 11209
From: Norway

Nice work, I envy hardware support Acube gives its customers.


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TiredofLife 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 11:16:17
#14 ]
Super Member
Joined: 6-Jul-2005
Posts: 1648
From: Here

Nice work.

Thanks


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DAX 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 11:25:28
#15 ]
Elite Member
Joined: 30-Sep-2009
Posts: 2790
From: Italy

@marko

WOW, the "read" value went from the original 14MB to 41MB that's basically +300%

Amazing

Last edited by DAX on 12-Feb-2011 at 11:25 AM.


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ikir 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 12:53:10
#16 ]
Elite Member
Joined: 18-Dec-2002
Posts: 5646
From: Italy

Awesome!!! Thanks ACube!


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Mechanic 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 13:25:16
#17 ]
Elite Member
Joined: 27-Jul-2003
Posts: 2007
From: Unknown

My benchmarks

Original:
Meh!

After Patch (1.1):
Wow!

After patch (1.2):
Holy Moly!

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Cool_amigaN 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 13:42:06
#18 ]
Super Member
Joined: 6-Oct-2006
Posts: 1189
From: Athens/Greece

Installed on SamEp667. No noticeable perfomance gained on Q2 timedemo, just 0.4 fps more.


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ChrisH 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 17:45:54
#19 ]
Elite Member
Joined: 30-Jan-2005
Posts: 6673
From: Unknown

@Cool_AmigaN
I'm not surprised. The previous version of this patch didn't make a noticable difference, but (as people pointed out then) that's because of how Quake 3 (and other 3D games) tend to work.

But I wouldn't be surprised if it makes a bigger difference on some 2D games (especially ports of badly written PC games).


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Mrodfr 
Re: OS4 patch 1.2 for Sam440ep/flex boards
Posted on 12-Feb-2011 18:53:32
#20 ]
Super Member
Joined: 28-Jan-2007
Posts: 1396
From: French

Hello,

Hope Acube will improve more this patch. Maybe with 60-80mo/s, we could play all DVD without frameskip.


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