AMD Developer Forums - General Discussions

Disable Crossfire on 5970

jbinski — 2010-03-09T18:51:20 -05.00

I am using CentOS 5.4 with an ATI 5970. I have tried multiple times to disable crossfire through the following commands:

aticonifg --adapter=all --cf=off

and do a reboot but then when the command

aticonfig --lscs

[root@zeus ~]# aticonfig --lscs
    Candidate Combination:
    Master: 6:0:0
    Slave: 5:0:0
    CrossFire is enabled on current device
    CrossFire Diagnostics:
    There is CrossFire Side port connection between GPUs
    CrossFire can work with P2P write through peer aperture
    Dongle Capabilities: support PASSTHROUGH |INTERLINK_SW_AFR | INTERLINK_AUTO_AFR | INTERLINK_BLACKING | INTERLINK_SUPERAA

It says crossfire is enabled, even though

aticonfig --lsch

[root@zeus ~]# aticonfig --lsch

CrossFire chain for adapter 0, status: disabled
0. 06:00.0 ATI Radeon HD 5900 Series
1. 05:00.0 ATI Radeon HD 5900 Series

says it is diabled.

Evergreen (HD5xxx): under what condition is VID=11 possible??

mkchiu — 2010-03-09T15:45:40 -05.00

This is the most like place to get an answer and I did not see any AMD resources to pose the question. I am in communication with a AIBn regarding the genesis of the question.

Regarding the Voltage ID outputted to an Evergreen card assembly's power controller, under what possible conditions is VID=11 possible? I am specifically interested in a little more detail than just the video BIOS controls the VID. An answer of never-ever or should-not would also be unsatisfactory.

I would prefer a PM regarding this question due to the nature of the originating problem.

Performance Problems: Game of Life

eaglo — 2010-03-01T15:46:16 -05.00

hello!

last term we developed a "game of life" simulation in one of our lectures ("efficient programming with c++")

with a 3ghz athlon64 x2 (4gb memory) i get around 52,5 seconds (single threaded) for a 1000x1000 board with 1000 generations (random distribution of cells)

with a 2,6ghz core i5 (4gb memory) i get ~16,5 seconds (single threaded) ...

compiler is msvc++ 2008, c/c++ optimization Maximize Speed (/O2)

for code see attachment... GoL is implemented in terms of 2 1-dimensional bool arrays which are swapped every generation (pointer swap)

the question is: how can this massive difference be explained ... and are there any tweaks to get msvc++ to produce faster code for an amd?

How to use Driver Robot to update drivers?

necoleliao — 2010-03-01T05:33:52 -05.00

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Performance Opteron 2435 (2Cpu 6core) - can anybody help?

dbtp123 — 2010-02-25T11:04:06 -05.00

Hi all,

Performance on our new 2 CPU 6core 2.66Ghz Opterons 2435 is a bit disappointing and I have no idea where to look or what I can do about it. I hope somebody can put us in the right direction.

Comparison is done with a 2 CPU Intel Xeon X5450 3.00Ghz (4core, also Windows 2008 Server 64 bit) - and also with my Windows XP Desktop.

The application (C#) uses multiple threads to read/process/write multiple files and runs about 37 minutes on Opteron and 23 minutes on Intel. CPU usage on Opteron is about 15% average, on Intel (exact same program and data ) about 30%. For some reason it just doesn't use all that cpu power. Somewhere seems to be a bottleneck (it is not IO).

We also created a little test application (see attached code) that only does some integer processing and this shows the same (even worse) behavior on Opteron being slower. Java or .Net doesn't seem to make a difference with this one.

We are stuck at the moment and would really appreciate if anybody can give some hints.

Many thanks,

Douwe

AHCI after install Windows XP in ATA mode

wldawn — 2010-02-23T19:23:41 -05.00

Hi.

I have a Dell Studio 1536. I install Windows XP in ATA mode because in AHCI mode appear the BSoD.

I want to install the support for AHCI but i don't want to reinstall Win XP. I search in the net and if find this: http://foro.noticias3d.com/vbulletin/showthread.php?t=269184 [Is in Spanish]

They talk about a RAID Driver .exe but in tha AMD page the RAID Driver is .zip, I tried this instructions with this zip version but it doesn't works.

My theory is that is necessary make changes to the .reg file but i don't know what changes.

Can you help me?

Thanks you very much.

Hybrid CrossFire, ATI Stream and OpenGL version

madam — 2010-02-23T15:05:22 -05.00

I'm going to get some new hardware and my idea is AMD 780G chipset with radeon 3200 IGP and radeon 5570 discrete GPU. I'd like to use hybrid CrossFire configuration but unfortunatelly can't find answers for some questions.

Radeon 5570 has support for ATI Stream, OpenCL and OpenGL v.3.2.
Radeon 3200 IGP - as far as I know - dosn't work with ATI Stream and OpenCL. I'm not completly sure about OpenGL version, because have found some different informations. May it depend of driver version?. I assume that it has support for OpenGL 2.1.

The questions are:

1. Will the CrossFire based on mentioned hardware be able to run ATI Steam and OpenCL?
2. What version of OpenGL would it have support for?
3. Is SidePort memory for IGP any advantage if used for hybrid CrossFire?

HD5850 card issue

Old Fox — 2010-02-20T15:43:48 -05.00

I recently installed a HD5850 Black Edition video card. Everything works fine except when the computer sleeps it wont reawaken unless I turn it off and reboot. This has never happened with any card I've ever had. Any help would be greatly appreciated.

Thank you

Tom Silva

Catalyst 10.2 Linux AMD64 = no more mouse cursor (ATI 5770 card)

basile.starynkevitch — 2010-02-19T12:29:55 -05.00

Hello,

With the newly released Catalyst 10.2 on amd64, there is no more any visible mouse cursor.

I posted all the details in

http://forums.amd.com/devforum/messageview.cfm?catid=390&threadid=128189&enterthread=y

Is this a known bug?

Regards.

Basile Starynkevitch

Why no Mobility Radeon drivers?

bingo88 — 2010-02-18T11:52:37 -05.00

Why doesn't AMD offer any recent drivers for the Mobility Radeon HD series (in my case a HD 4570) like Nvidia does? The drivers Dell provides for my Studio 1555 are really old and I doubt that they will release any newer versions...

How to change Catalyst Control Center settings from external utility

ljbade — 2010-02-17T22:25:22 -05.00

Hi,

I would like to know if there is any documentation available for the CCC COM interface in ATICCom.dll and ATICCom.tlb.

I would like to change the 3D settings (AA/AF) page from an external tool that will automatically detect if certain games start, eg Borderlands, and then apply my preferred AA/AF settings. This would save me going into the CCC everytime I run a different game to change AA modes etc.

Using C# disassembly I have figured out how the CCC .NET system works, but it would be nice if there was some official/supported way of doing this.

So far I have figured out that IC4User or ICOM (not sure which one yet) exposes several methods for setting/getting CCC settings.

Eg ICOM.SetValue("0:Radeon3D:Main3D:Main3D", "OptQuality");

will set the 3D quality slider bar to Optimal Quality.

Looking in atipdlxx.dll and atiadlxx.dll only seems to export display/adapter settings not AA/AF stuff.

'login' button

zlice0 — 2010-02-16T20:38:25 -05.00

hate to have to point it out...but why is it i'm logged in and there is still a 'login' button on the top of the page?

firefox 3.5.6

5570 card issues

zlice0 — 2010-02-16T20:31:45 -05.00

i use gentoo 64bit(x86_64). i just got my HD 5570 in the mail...looking at

http://developer.amd.com/gpu/atistreamsdk/pages/default.aspx

i am under the assumtion that the SDK will support my card.

but when i run say "PATH='' ./BinarySearch" i get a "Error: clGetPlatformIDs failed. Error code : unknown error code" at the end of my output...

not to mention i was unaware that there are no display drivers for the 5570...

http://support.amd.com/us/psearch/Pages/psearch.aspx?type=2.4.1&product=2.4.1.3.47.3.1&contentType=GPU+Download+Detail&ostype=Linux+x86_64&keywords=&items=20

i rehook my other video card and hook the 5570 into another slot, oO(okay i bought it to program anyway...yadayada)

but with 'aticonfig' and the compiled files giving me 'getplatformID' error i am feeling weary that my card will not work properly or have less functionality down the road.

question: how can i tell if there are any 'limitations', or am i screwed? did i just waste $100? will there be 5570 drivers or is it too far behind with the sexy 5970 out? i bought this thinking i could use it as a prototype/development card because i don't have the money to spend on better hardware

PhysX v9 driver conflict with Sandra2010 GPGPU benchmark

ReDpc — 2010-02-12T21:40:58 -05.00

I installed PhysX (software emulation on ATi) drivers before Stream2.01:

On Sandra2010 Engineer, when you create a report so it runs all GPGPU benchmarks it continues for 18hrs (and counting...)

For some reason GPU-Z does not detect that I have an OpenCL GPU.

Reports intermittent 2% load on the GPU and 100%(with 50% kernel) on one CPU thread, the 4 hyperthreads are parked.

It seems one of the benchmarks is running something meant for 1600 GPU-threads on a single CPU-thread due to the PhysX driver interfering?

Core975
RaD5870

P.S. Is there a seperate OpenCL driver somewhere on khronos?

because the StreamSDK says it supports OpenCL1.0, so I figured that's all I needed.

P.P.S It looks like the problem is with the STREAM codepath of the benchmark, it locks at 50% with 100@ CPU utilization on 1 out of 8 available CPU threads for over 18hrs?!

Also, the double is being emulated on DirectCompute and OpenCL, I don't think that is normal either, since I get 120Mpixels max instead of ~450 shown for the reference 5870 result.

SVM virtualization problem ( intercepting CPUID )

KeMmIo — 2010-02-06T12:02:38 -05.00

Hi everybody.

I got some problems while intercepting CPUID, somethimes it works without any problems, but sometimes processor hangs(freezes).

where's part of code:

maybe i'am doing something wrong?Or maybe haldling it in the right way?

help please!

VGA Cards Diagrans

Pollar — 2010-02-02T19:14:08 -05.00

Hi,

  We are brazilian Water Cooling company (www.pollar.com.br). I need the default PCB schematics for ATi Radeon 5xxx series for developer full-cover waterblocks. Where I can see it?

   Thanks,

Cássio Alvarenga.

Ola,

   Nós somos uma empresa brasileira de Water Coolers (www.pollar.com.br). Eu preciso do diagrama padrão das placas serie Radeon 5xxx para desenvolver blocks full-cover. Onde posso obter?

Obrigado,

Cássio Alvarenga.

Question on internals of GPU

reinhardr — 2010-01-28T09:17:23 -05.00

Hi

I am trying to use GPU for a specific purpose, and I would like to ask following questions about internals of GPU.

Is there any operating system running on the GPU – or is everything implemented in hardware?
If everything is implemented in hardware how does the device driver interacts with the GPU?

Does ATI reveal more information about their GPU architecture than NVIDIA? If yes, are there any documents available?

Regards,
Reinhard

hello world example

florian100 — 2010-01-28T04:41:30 -05.00

I just started learning opencl and I tryed to run the hello world example provided by Benedict Gaster

http://developer.amd.com/GPU/ATISTREAMSDK/pages/TutorialOpenCL.aspx

sadly I didn't get it to run, I get the following error:

PC:~/opencl$ gcc -o hello_world -Ipath-OpenCL-include -Lpath-OpenCL-libdir lesson1.cpp -lOpenCL
lesson1.cpp: In function ‘int main()’:
lesson1.cpp:31: error: no matching function for call to ‘cl::Platform::get(std::vector >*)’
cl.hpp:1419: note: candidates are: static cl_int cl::Platform::get(cl::vector*)
lesson1.cpp:36: error: no matching function for call to ‘cl::Platform::getInfo(int, std::string*)’
cl.hpp:1334: note: candidates are: cl_int cl::Platform::getInfo(cl_platform_info, cl::STRING_CLASS*) const

I am using ubuntu

PC:~/opencl$ cat /proc/version
Linux version 2.6.31-14-generic (buildd@crested) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) ) #48-Ubuntu SMP Fri Oct 16 14:05:01 UTC 2009

I attached my program

open64 compiler and specOMP

jkong — 2010-01-27T13:45:40 -05.00

I try to compare the latest open64 and acml math library with Sun Studio 12 update 1(ss12u1). The result shows open64 generated executables are 10-25% slower than ss12u1. Only on fma3d_m open64 gives better result.

The options I use are:

FOPTIMIZE = -Ofast -mp -HP -mso -LNOrefetch=3 -LNO:simd=1 -LNO:vintr=1 -march=barcelona
COPTIMIZE = -Ofast -mp -HP -mso -LNOrefetch=3 -LNO:simd=1 -LNO:vintr=1 -march=barcelona
EXTRA_LDFLAGS =
EXTRA_LIBS= -I/opt/acml4.3.0/open64_64/include -L/opt/acml4.3.0/open64_64/lib -lacml_mv

Has anyone run specOMP with open64? I searched spec result site and cannot find any result using open64.

Thanks,

Jun

help please !!?

shark74 — 2010-01-26T02:49:35 -05.00

I have agood ideas & I raelly want to work for AMD

Who,s Ican talk to???????????

Driver v8.681.0.0 causing Windows clock slowdown (tested w/ 4670, 4850)

xiard — 2010-01-25T17:58:08 -05.00

[Note: I posted this in the AMD Game Forum as well, and posted the message to Catalyst Crew Driver Feedback].

With particular driver versions the OS clock slows down when particular application features are used.

We are a developer. Our application is written in .NET 3.5 (WPF) and uses the "DropShadowEffect" object. We noticed that the Windows clock was losing time before periodically resyncing. This is under Windows XP. I didn't have another box to test this on with Vista or Windows 7.

I created a test application that uses DropShadowEffect heavily and was able to see a slowdown of 2 seconds every 10 seconds. Test steps:

- Boot Windows XP. Don't run any of our other developed software to keep the test case simple.
- Open the Windows clock.
- Run TestDropShadowPerformance.exe.
- Start the stopwatch on my wrist at time X.
- At time X+10 seconds on the XP box, my watch reads ~X+12 seconds.
- At time X+1 minute on the XP box, my watch reads ~X+1:12.
- etc.

We discovered that rolling back to version 8.591.0.0 or 8.561.0.0 appeared to resolve the problem. 8.681.0.0 is the driver we were using that had the problem.

We initially thought we had a bad board (VisionTek ATI Radeon HD 4670 1GB), but replaced it with an identical board from Best Buy and had the same problem. We also tried an XFX ATI Radeon HD 4850 1GB and observed the exact same behavior.

If you would like, I can provide the source code for the TestDropShadowPerformance.exe app or the binary. It is a very small application. It is Xaml + C#. I don't believe the Xaml will display if I use the Attach Code button, since it's essentially Xml, so I'm not bothering doing that at the moment.

We have a large client that is pushing very hard for us to contact ATI and find out your take on what's going on here. Therefore it is extremely important to me that I get in touch with someone, either over the phone or via email, as quickly as possible. Even if the only correspondence I get is "thank you for letting us know; we didn't know about this but we'll look into it", I believe that would satisfy the customer. If possible, please contact me as soon as possible about this.

Thank you,

David Cater
xiard@mindspring.com
404-259-4396

AMD64 Development Articles

Andrey2008 — 2010-01-24T00:45:31 -05.00

20 issues of porting C++ code on the 64-bit platform

Program errors occurring while porting C++ code from 32-bit platforms on 64-bit ones are observed. Examples of the incorrect code and the ways to correct it are given. Methods and means of the code analysis which allow to diagnose the errors discussed, are listed.

Seven Steps of Migrating a Program to a 64-bit System

The article describes the main steps which should be performed to correctly port 32-bit Windows applications on 64-bit Windows systems. Although the article is meant for developers using C/C++ in Visual Studio 2005/2008 environment, it will be also useful for other developers who plan to port their applications on 64-bit systems.

64 bits, Wp64, Visual Studio 2008, Viva64 and all the rest...

The purpose of this article is to answer some questions related to safe port of C/C++ code on 64-bit systems. The article is written as an answer to the topic often discussed on forums and related to the use of /Wp64 key and Viva64 tool.

The forgotten problems of 64-bit programs development

Though the history of 64-bit systems development makes more than a decade, the appearance of 64-bit version of OS Windows raised new problems in the sphere of development and testing applications. In the article there are considered some mistakes connected with 64-bit C/C++ code development to OS Windows. The reasons are explained according to which these mistakes didn't find their reflection in the articles devoted to the migration tasks and are unsatisfactorily detected by the majority of static analyzers.

Development of resource-intensive applications in Visual C++

The article will familiarize application developers with tasks given them by the mass introduction of 64-bit multi-core processors symbolizing revolutionary increase of computing power available for an average user. It will also touch upon the problems of effective use of hardware resources for solving everyday applied tasks within the limits of Windows x64 operating system

Optimization of 64-bit programs

Some means of 64-bit Windows applications performance increase are considered in the article.

A 64-bit horse that can count

The article concerns the peculiarities of Visual C++ compiler's behavior when generating 64-bit code and possible errors relating to it.

Comparison of analyzers' diagnostic possibilities at checking 64-bit code

The article compares a specialized static analyzer Viva64 with universal static analyzers Parasoft C++Test and Gimpel Software PC-Lint. The comparison is carried within the framework of the task of porting 32-bit C/C++ code on 64-bit systems or developing new code with taking into account peculiarities of 64-bit architecture.

Traps detection during migration of C and C++ code to 64-bit Windows

Appearance of 64-bit processors on PC market made developers face the task of converting old 32-bit applications for new platforms. After the migration of the application code it is highly probable that the code will work incorrectly. This article reviews questions related to software verification and testing. It also concerns difficulties a developer of 64-bit Windows application may face and the ways of solving them.

Introduction into 64 bits for the beginners or where's again the 64-bit world?

There were 64-bit processors, the operational systems, some programs. However completely all users have passed to 64 bits still far not. In article the reasons of it are considered.

AMD64 (EM64T) architecture

The article briefly describes AMD64 architecture by AMD Company and its implementation EM64T by Intel Company. The architecture's peculiarities, advantages and disadvantages are described.

Case Study: Porting a set of point cloud and triangle mesh processing C++ libraries to 64-bit platform

Italian company E.G.S. S.r.l. deals with development of solutions in the field of simulation of triangle mesh-based 3D objects.

Some examples of the 64-bit code errors

While porting 32-bit software to 64-bit systems there may appear some errors in the code of applications which were written in C++ language. The cause for these hides in the alteration of the base data types (to be more exact, in the relations between them) with the new hardware platform.

Problems of testing 64-bit applications

The article observes some questions related to testing the 64-bit software. Some difficulties which a developer of resource-intensive 64-bit applications may face and the ways to overcome them are described.

Safety of 64-bit code

The article reviews the issues of providing safety of program code when adapting it for 64-bit systems.

Peculiarities of the Development of 64-bit Applications

What did programmers get when 64-bit systems came to power? Besides the numerous advantages described in many advertising articles, programmers got the whole bunch of brainteasers, puzzles and even traps. Everyone who wants to get real advantages of using 64-bit systems has to face these ones.

Static code analysis for verification of the 64-bit applications

The coming of 64-bit processors to the PC market causes a problem which the developers have to solve: the old 32-bit applications should be ported to the new platform. After such code migration an application may behave incorrectly. The article is elucidating question of development and appliance of static code analyzer for checking out of the correctness of such application. Some problems emerging in applications after recompiling in 64-bit systems are considered in this article as well as the rules according to which the code check up is performed.

64-bit Loki

The article is a report about testing of portability of Loki library with 64-bit systems with the help of Viva64 code analyzer performed by OOO "Program Verification Systems" Company. It contains recommendations for users of the library. The article will be also useful for the users of other libraries built on templates for it describes the peculiarities of analysis of such libraries.

How to estimate the process of 64-bit migration of C/C++ applications?

The article is devoted to the issue of estimating complexity and cost of migration of applications to 64-bit platforms. Such aspects as availability of various components of an application, libraries and development tools are considered. An example of using PVS-Studio program tool for estimating migration is given. Although the mentioned PVS-Studio product is oriented on C and C++ applications in Windows system, Unix-developers (and developers working in other systems) will find the article useful too.

About size_t and ptrdiff_t

The article will help the readers understand what size_t and ptrdiff_t types are, what they are used for and when they must be used. The article will be interesting for those developers who begin creation of 64-bit applications where use of size_t and ptrdiff_t types provides high performance, possibility to operate large data sizes and portability between different platforms.

Offer 64-bit articles

Andrey2008 — 2010-01-21T08:31:08 -05.00

Hello.

Could you please tell me who is responsible for developing the section "AMD developer central" (http://developer.amd.com/Pages/default.aspx) and how I can communicate with this person?

My name is Andrey Karpov. I am one of the organizers of the startup - www.viva64.com. We are developing the tool PVS-Studio intended for testing 64-bit and parallel OpenMP applications. Perhaps you will get interested in the topic of 64-bits.

Our site contains quite a lot of materials on the topic of 64-bit C++ software development. You may see our articles, blog and other materials here - http://www.viva64.com/developers-resources/ .

We suppose that our materials may be quite relevant to the section http://developer.amd.com/Pages/default.aspx . If AMD company is interested in it we propose that you publish some of our articles on your site. Also, the readers of your site might be interested in learning about PVS-Studio tool. If you are interested in a unique context we may discuss writing a separate large article.

Sincerely yours, Andrey Karpov,
Cand. Sc. (Physics and Mathematics), CTO
Program Verification Systems Co., Ltd.
URL: www.viva64.com
E-Mail: karpov@viva64.com
Ph.: +7 (4872) 38-59-95 (GMT + 03:00)

Turion Ultra ZM-88

sleepdirt — 2010-01-19T19:40:24 -05.00

Just a curious question as to what ever happened to the release of this CPU?

Turion Ultra fans want to know. I have yet to see it, even on EBay.

simNow Installation

khanb — 2010-01-11T12:27:24 -05.00

I have just started using simnow simulator and am reading its manual. I am finding problems installing simnow (on suse 11.1 64 bit linux, on intel xeon 64 bit proc.)

First of all, when I follow the installation command in the manual and do "tar -xzf", the simnow directory I get is different from the one mentioned in the manual..there is no "devices" or "reg" directories.

Similarly I dont get configuration file "simnowrc" in my $HOME/.qt directory.

Can you please help me on that.

Secondly I was followiing the manual on how to make device groups (page 26 of the manual). When I press the "finish" button I get the following error.

reset issued
created device AweSim Processor
reset issued
created device AweSim Processor
reset issued
created device AMD 8th Generation Integrated Northbridge
device Unnamed not found
Segmentation fault

I assume it has something to do with not installing the simnow correctly.

Please help.I would really appreciate that.

How to understand:Reading register F3xA4

mabra — 2010-01-10T14:43:37 -05.00

Hallo !

I really look for help. I am using an open source library for ring0 access [WinRing0] and try to read this register, to obtain the temperature. But I always get zero. So I assume, I do not understand to provide the parameters right. I found code in another forum - the threads ended - but this dont helped me.

My main problem is, that I do not understand the "F3" value. If I look at the method signature of the mentioned libraries function "ReadPciConfigDwordEx", I have to provide the following:

0- 2	Function Number
3- 7	Device Number
8-15	PCI Bus Number
16-31	Reserved

0- 2	Function Number
3- 7	Device Number
8-15	PCI Bus Number
16-31	Reserved

0- 2 Function Number
3- 7 Device Number
8-15 PCI Bus Number
16-31 Reserved

From that others forums thread, I derived the following:

UInt32 pciAddress = 0x3+((0x18)<<3); //This should be "F3" !!!?????
UInt32 regAddress = 0xa4;
UInt32 value1 = 0;
int result = ReadPciConfigDwordEx(pciAddress, regAddress, ref value1);

This always return zero.

I hope, someone could shed some light on this !!

Thanks anyway,
br--mabra

Athlon XP BIOS developer's guide?

Kadyrov — 2010-01-09T15:53:10 -05.00

Hello, I have looked everywhere, but cannot find a BIOS/kernel developer's guide for Athlon XP. Does anyone know where to find it (if it exists)?

If this doc is not available, then maybe someone can answer my specific question. I need to know whether the Tctl temperature value (described in section 2.10.1 of AMD 10h BIOS developers guide) is available in Athlon XP processors as well, or if there is another way to get CPU temperature in Athlon XP.

Four Monitors

LenAlox — 2010-01-07T02:15:47 -05.00

I have two Radeon HD 3870 graphic cards. I want to one day connect them to four monitors. I was wondering is there a way to span a screen across all four in WinXP? (Horizontal, 2x2, etc.) I know I can extend my desktop onto them, but that isn't what I want.

When will the official Cypress architecture be released?

anlongstar — 2009-12-29T22:10:29 -05.00

I need the architecture (flow diagram )of HD 5800 series in my academic paper.

Although this website releases Cypress architecture:

http://www.elitebastards.com/index.php?option=com_content&view=article&id=820%3Aamd-radeon-hd-5800-series-technology-preview&catid=17%3Apreviews&Itemid=31&limitstart=2

But it is not official.

Where to find it?

Thank you for your attention!

Reserved Memory

denat — 2009-12-27T19:55:19 -05.00

Where can I find a listing or determine through software, perhaps through inquiries, the reserved memory blocks on an implementation. Reserved by an OS (Debian Linux is my first priority, Windows second), or by hardware..?

Your responses have been real great,

Denat

Frequency-Determination Assembler Code

tannergooding — 2009-12-23T22:56:48 -05.00

Ok, so in all of the BIOS and Kernel Developers Guides, they have a bios checklist and mention that you should perform CPU speed detection. It says to see the example frequency-determination assembler code available on the AMD web site but I can not find it anywhere. Any help in locating it would be greatly appreciated.

The following is from Page 327 of the 'BIOS and Kernel Developer's Guide for AMD Athlon(tm) 64 and AMD Opteron(tm) Processors". Publication #26094

12.2 CPU Speed Detection

The BIOS can use the time-stamp counter (TSC) to clock a timed operation and compare the result to the Real-Time Clock (RTC) to determine the operating frequency. See the example of frequency-determination assembler code available on the AMD web site.

AMD SVM, NMI handling by VMM

ultimate — 2009-12-22T16:29:58 -05.00

Dear All,

I am using NMI's in my tiny VMM for internal purposes (for sending commands between CPUs via IPI mechanism).

AMD System Programming Manual says about NMI handling:

"The VMM can intercept non-maskable interrupts (NMI) using a VMCB control bit (see Table 15-7).

When intercepted, NMIs cause an exit from the guest and are held pending."

And yes, after handling NMI VM exit I get subsequent VM exits due to NMIs.

Is it possible to avoid generating these NMI VM exits after handling NMI VM exit internally by VMM?

Ammo SDK?

Theusz — 2009-12-22T10:26:53 -05.00

Hi there,

Has someone seen the Ammo SDK recently? I want to write a simple plugin to control foobar2000 with my Remote Wonder II, I've heard about this SDK but it appears it has been removed from AMD's servers... Does anyone know where I could find it?

Thanks a lot.

Please add Visual C++/Studio "Express" support to all your development tools!

Valeron — 2009-12-22T01:45:27 -05.00

I wonder why AMD exclude the hobby/student developers in their dev tools. Why can't you add support to the most user-friendly express edition VS? While the AMD-optimized intend community is so small in contrast to those woking on Intel-optimization, excluding hobby/os/student dev who used free edition compiler/tools is really a bad idea.

Just an example, the most advanced h.264 encoder x264 is os, they do little optimization for AMD but heavily for Intel just because they lack support from you. Though they're woking mostly with GCC, that doesn't means hobby/os developers work on Windows don't deserve to be concerned.

Please consider seriously to add Visual C++/Studio "Express" support to all your development tools!

monitor/mwait in user-mode

valderama — 2009-12-21T08:10:38 -05.00

Hi,

According to the AMD specs, it seems that monitor/mwait can be used in CPL bigger than 0. Nevertheless, all my trials on two different machines, one running windows, and the other LINUX ended with illegal instruction failure.

The spec do state that the MSR C001_0015h[MonMwaitUserEn] must be set to 1.

I have no idea what either LINUX or Windows do with this MSR. Anyone has better experience with playing with monitor/mwait in user-mode in any OS (Windows?LINUX?FreeBSD?)

Those instructions can be highly beneficial in special cases when you can spare the hardware thread for waiting, but want it to wake up very fast when the occassion arrives.

Cheers!!

Calculate Power Consumption of CPU

davidenko — 2009-12-20T14:33:58 -05.00

An increase in processor operating frequency not only increases system performance,
but also increases the processor power dissipation. The relationship between
frequency and power is generalized in the following equation: P = CV2F (where
P = power, C = capacitance, V = voltage, F = frequency). From this equation, it is
evident that power increases linearly with frequency and with the square of voltage.

But where to find capacitance for AMD Cpu's?

How to detect AMD Chipset

davidenko — 2009-12-18T01:19:20 -05.00

Hello!

Can it be done via PCI ID.But where to get the PCI ID's for all AMD Chipsets

Callgate in x64

WindowsNT — 2009-12-17T13:19:13 -05.00

Hello there.

My aim is to communicate with a driver that would create a segment memory with a specified protection level, so my user-level application can copy some protected code there and execute it in that protection level. In x86 this is possible with the aid of a callgate.

Can it be done in x64 ? If one has resources on this, please post.

Best Regards.

Fixed all issues with Ati Radeon 5850 HD Graphics Card.

Logikos — 2009-12-13T03:57:55 -05.00

Well I finally completed my goal, a permanent , innate, fix -- not a hack, or memory software change within the OS making things flicker in and out upon Power play changes, and clock speeds.

But ultimately -- My 5850 (and a 5870 for that matter) are bug free as far as I can test them).

It all started when I built a new state of the art system from the ground up about a month ago. After some careful review, I chose the ATi 5850 HD as a balance between not TOO outrageous of a price for performance (at $300).. and well within reach of future compatibility with its clock speeds and "future-proof" specifications (and ability to CF if needed).

Well,.. immediately upon powering on my new build, it showed glitches. My monitor was flickering. I sighed a little.

I have a 120Hz LCD (Only 2 on the market worth buying) .. and I ultimately, at first, had to put it at 110Hz to eliminate the flickering in 2D mode in general windows.

As the day progressed,.. I noticed that with Youtube, as I played a video .. It would stutter, flicker,.. (sometimes the driver would fail and recover).. (sometimes the driver would fail, and give you the verticle line of some color lockup screen). --Not good.

Further,.. At random the cursor would become 10times its normal size, for no apparent reason. Just bam.

In games, there would be lockups, system crashes,.. MORE flickering,.. screen wrap around on itself and artifacts, depending.

The bug list went on and on.

For sake of length, I won't go on much further on the processes I took to reach my conclusion.. but after much troubleshooting, tinkering, using memory addressing hacking, tools, gathering information from within the card. Observation of what the card was doing , and when.. and figuring out 'why'. I came up with a solution.

I ended up changing the BIOS drastically. There are some not so important or conversation worthy changes that were applied that ultimately allowed the following to be applied and the ATi Catalyst drivers to accept the card properly.

The 2D and ACPI clock speeds were adjusted,.. and their voltages slightly increased . We are talking from .95 to 1.0, nothing major. Slight increases in speeds as well.

The problem is ultimately in the 5xxx series cards being underpowered due to Powerplay downclocking and under volting to such a low level (in this case 157/300 @0.95) that errors not only would,.. but DID cause an unreasonable amount of instability issues.

Prime example: The card would be slightly more stable (before my change) when I plugged the DVI cable into the second (bottom) output. Simply due to the voltage being a HAIR higher (measured via DVM).

There are a host of other people in so many forums with cards ranging from 4870's (I think the powerplay issues are intertwined, but I don't think all issues are quite as similar as

The 5770, 5850, 5870, 5970 (Basically all of the 57xx/58xx/59xx) Series, with a strong emphasis on the 58xx and 59xx being very similar.

At any rate, these other people report some or all of these problems (I listed only a few.. there is a list a mile long.) I didn't experience them all, as no one does, of course.

I won't claim this fix is the miracle cure for any and all issues -- but I do think it is a great step , at minimum, a great 'hotfix-temporary fix' until ATi can come up with something to fix all these issues.

The procedure is simple, a Bios Flash. Checksum/CRC/Md5 is adequate for security/validity purposes. Otherwise, people who don't know what to do with this file, or can't figure it out,.. should just wait on ATi.

Posting this as well so that maybe ATi/AMD (Devs) *if they even glance here* might take notice of how easily this was corrected. I'm sure it can be done with more energy savings by the 'pros'.

5850 Bios Modified for Stability

Hash (CRC-32): 2886A4B6

Hash (MD-5): 15B979351AF9AAE636AF3E7EB445AD92

Use at your own risk. Otherwise, let us enjoy the benefits of DX 11, and improvements of infant Drivers over the months to come.

Take care,

Logikos

How to find appropriate motherboard?

asch — 2009-12-12T10:27:38 -05.00

I am developing an embedded system.

What we need is a small and low power mini ATX motherboard with integrated CPU and GPU. LVDS video output is also necessary.

For small I mean FlexATX or smaller.

For low power I mean that it is comparable with Intel Atom and integrated GPU solutions. I don't have more exact requirements yet.

Our prototype application shows that we need GPU with dedicated video RAM to provide enough memory bandwidth. CPU performance is not a bottleneck, any current x86 processor would do the job. Non-x86 architecture may also be an option but it would be much simpler to use x86.

I have read on a forum that a recent eee PC was released with Atom processor and ATI Radeon HD3450 GPU with dedicated video RAM. Is such a motherboard available for purchase somewhere or is it built specifically for that product?

I have searched the Internet for such motherboards with no success. Do such motherboards exist? Can you give me some pointers where to find them?

AMD Developer Forums - General Discussions

Disable Crossfire on 5970

Evergreen (HD5xxx): under what condition is VID=11 possible??

Performance Problems: Game of Life

How to use Driver Robot to update drivers?

Performance Opteron 2435 (2Cpu 6core) - can anybody help?

AHCI after install Windows XP in ATA mode

Hybrid CrossFire, ATI Stream and OpenGL version

HD5850 card issue

Catalyst 10.2 Linux AMD64 = no more mouse cursor (ATI 5770 card)

Why no Mobility Radeon drivers?

How to change Catalyst Control Center settings from external utility

'login' button

5570 card issues

PhysX v9 driver conflict with Sandra2010 GPGPU benchmark

SVM virtualization problem ( intercepting CPUID )

VGA Cards Diagrans

Question on internals of GPU

hello world example

open64 compiler and specOMP

help please !!?

Driver v8.681.0.0 causing Windows clock slowdown (tested w/ 4670, 4850)

AMD64 Development Articles

Offer 64-bit articles

Turion Ultra ZM-88

simNow Installation

How to understand:Reading register F3xA4

Athlon XP BIOS developer's guide?

Four Monitors

When will the official Cypress architecture be released?

Reserved Memory

Frequency-Determination Assembler Code

AMD SVM, NMI handling by VMM

Ammo SDK?

Please add Visual C++/Studio "Express" support to all your development tools!

monitor/mwait in user-mode

Calculate Power Consumption of CPU

How to detect AMD Chipset

Callgate in x64

Fixed *all* issues with Ati Radeon 5850 HD Graphics Card.

How to find appropriate motherboard?

Fixed all issues with Ati Radeon 5850 HD Graphics Card.