Re: AMD Opteron FPU Bug

http://www.reghardware.co.uk/2006/04/28/amd_opteron_fpu_bug/

On 1 May 2006, at 21:02, David.Knight-kugt9ekRjqdWk0Htik3J/[email protected] wrote:
> HP just released the following advisory. Can any one elaborate on  
> what the symptoms are. That is how to tell if the "Inconsistency"  
> has occurred?

http://www.reghardware.co.uk/2006/04/28/amd_opteron_fpu_bug/

Sam


> Thanks in advance,
> David Knight
>
>
>
> "Foiles, Neil" <[email protected]>
> 05/01/2006 02:33 PM
>
> To
> "Foiles, Neil" <[email protected]>
> cc
> Subject
> Advisory: CUSTOMER ATTENTION REQUIRED: CPU Frequency Margin Test  
> Escape on Small Number of Single-Core 2.6-GHz and 2.8-GHz AMD  
> Opteron Processors
>
>
>
>
>
> SUPPORT COMMUNICATION - CUSTOMER ADVISORY
> Document ID: c00659053
> Version: 1
> Advisory: CUSTOMER ATTENTION REQUIRED: CPU Frequency Margin Test  
> Escape on Small Number of Single-Core 2.6-GHz and 2.8-GHz AMD  
> Opteron Processors
>
> NOTICE: The information in this document, including products and  
> software versions, is current as of the Release Date. This document  
> is subject to change without notice.
> Release Date: 2006-04-28
> Last Updated: 2006-04-28
>
>
> DESCRIPTION
> IMPORTANT: HP strongly recommends attention to the issue and the  
> prescribed action detailed below. Neglecting to perform the  
> prescribed action could potentially result in sub-optimal server  
> performance, server lockups or failures, ungraceful server  
> shutdowns, or data corruption or loss. By disregarding this  
> notification, the customer accepts the risk of incurring future  
> related events.
>
> As described in the AMD Opteron Processor Model x52 and x54  
> Production Notice, "AMD has identified, and subsequently corrected,  
> a test escape that occurred in a post-manufacturing product testing  
> process for a limited number of single-core AMD Opteron� processor  
> models x52 and x54. No other single-core AMD Opteron processsors  
> and no dual-core AMD Opteron processors are affected."
> Single-core AMD Opteron x52 and x54 microprocessors (2.6-GHz and  
> 2.8-GHz AMD Opteron processors) are shipped in the HP systems  
> listed in the table below.
> The AMD Opteron Processor Model x52 and x54 Production Notice states:
>
> "A small number of these processors manufactured in 2005 and early  
> 2006 have been observed to produce inconsistent results in a non- 
> production synthetic test environment with the convergence of the  
> following three simultaneous conditions:
> 1.        The running of floating point-intensive code sequences  
> (note: observed only in synthetic test environment),
> 2.        Elevated CPU temperatures, and
> 3.        Elevated ambient temperatures.
> Note: After thorough testing, these results have not been observed  
> on systems running commercially available applications, such as Web  
> servers, application servers, transaction processing servers,  
> database servers or file print servers."
> The AMD Opteron Processor Model x52 and x54 Production Notice can  
> be accessed at the following location:
>
> www.amd.com/opteron/productionnotice
>
> SCOPE
> Single-core 2.6-GHz and 2.8-GHz AMD Opteron processor models that  
> could potentially be affected were shipped in the following  
> ProLiant servers and HP Workstations:
>
> Server or
> Workstation	AMD Models Used
> ProLiant DL585	Single-core 2.6-GHz AMD Opteron Model 852 and
> Single-core 2.8-GHz AMD Opteron Model 854
> ProLiant DL385	Single-core 2.6-GHz AMD Opteron Model 252 and
> Single-core 2.8-GHz AMD Opteron Model 254
> ProLiant DL145 G2	Single-core 2.6-GHz AMD Opteron Model 252 and
> Single-core 2.8-GHz AMD Opteron Model 254
> ProLiant BL25p	Single-Core 2.6-GHz AMD Opteron Model 252 and
> Single-Core 2.8-GHz AMD Opteron Model 254
> ProLiant BL45p	Single-Core 2.6-GHz AMD Opteron Model 852 and
> Single-Core 2.8-GHz AMD Opteron Model 854
> HP xw9300 Workstation	Single-Core 2.6-GHz AMD Opteron Model 252 and
> Single-Core 2.8-GHz AMD Opteron Model 254
> HPxw25p Blade Workstation  	Single-Core 2.6-GHz AMD Opteron Model 252
>
> Note: HP systems that have been upgraded with single-core 2.6-GHz  
> and 2.8-GHz AMD Opteron processors could also potentially be affected.
>
> RESOLUTION
> All processors that are affected have been removed from HP  
> inventory. HP is currently shipping no potentially affected  
> systems, option kits, or spares kits. AMD and HP have implemented a  
> screening process to identify processors that are affected by this  
> manufacturing process issue.
> HP is recommending that customers take the following measures in  
> order to determine if further action is needed:
> 1.        Determine if ProLiant servers or HP Workstations in your  
> environment could be affected by identifying the number of HP  
> systems that are configured with single-core 2.6-GHz or 2.8-GHz AMD  
> Opteron processors.
> 2.        Contact HP Customer Support with this information and  
> request AMD Opteron CPU Verification.
> Determining ProLiant Servers and HP Workstations
> that Could Potentially be Affected
> Customers should first identify if they have systems that could  
> potentially be affected. Systems could potentially be affected if  
> they meet all of the following criteria:
>
> If the system is aProLiant DL145 G2, ProLiant DL385, ProLiant 585,  
> ProLiant BL25p, ProLiant BL45p server, HP xw9300 Workstation, or HP  
> xw25p Blade Workstation.
> Note: No other ProLiant servers and HP Workstations are affected,  
> even though they may use an AMD processor, because only these  
> servers and workstations use the specific models of AMD processors  
> that could potentially be affected.
> If the processor is a single-core 2.6-GHz or 2.8-GHz Opteron  
> processor.
> Note: Dual-core processors are not affected. ProLiant servers and  
> HP Workstations with dual-core AMD processors are not affected.
> If the processor isOpteronmodel 252, model 254, model 852, or model  
> 854.
> Note: Other models of the Opteron processor are not affected.
> IMPORTANT: If you do not own one of the systems listed above or if  
> your system does not include a 2.6-GHz or 2.8-GHz single-core  
> Opteron processor model 252, model 254, model 852 or model 854, as  
> described in the table above, your system is not impacted by this  
> issue.
> Customers can obtain processor information using any of the  
> following methods:
> Linux environment. On a ProLiant server or HP Workstation operating  
> in a Linux environment, execute the command: cat /proc/cpuinfo and  
> look for the processor model name field as shown in the following  
> example:
> model name: AMD Opteron(tm) Processor 252
> Microsoft Windows environment. On an HP system in a Microsoft  
> Windows environment, view the CPU information presented in Device  
> Manager by selecting the CPU in the hardware list as shown below.
>
> <mime-attachment.jpeg>
>
> Note: For Linux and Microsoft Windows environments, verify the  
> processor model, as well as the core frequency, as the processor  
> may have downshifted to a slower core frequency in systems with AMD  
> PowerNow support.
> HP Insight Diagnostics. ForProLiant servers, customers can also  
> runHP Insight Diagnostics to obtain this information.
> HP Systems Insight Manager and SMH. For ProLiant servers, customers  
> can also use server system management tools, such as HP Systems  
> Insight Manager and the HP System Management Homepage (SMH), to  
> obtain this information.
> Visual Inspection. For processors that have not been installed in a  
> system, use the part number laser-printed on the AMD Opteron  
> processor to identify the processor information. Refer to the AMD  
> Opteron Processor Quick Reference Guide, which is available on the  
> AMD website at the following URL:
> http://www.amdcompare.com/us-en/opteron
> NOTE: Visual inspection can only be performed on processors that  
> have not been installed in a system. For processors already  
> installed in a system, the processor heat sink will cover the  
> processor information; therefore, one of the other methods above  
> must be used.
> If additional assistance is required to identify potentially  
> affected processors, contact HP Customer Support.
> Contacting HP Customer Support for AMD Opteron CPU Verification
> For customers with HP Systems that are potentially affected,  
> contact HP using either of the following methods. Customers should  
> provide HP Customer Support with the following information for  
> systems that are potentially affected: model number, serial number,  
> number of processors in each system, type of processor(s) in each  
> system, as well as the location of the potentially affected system(s).
> An HP customer support representative will assist customers in  
> scheduling an HP service representative to perform the AMD Opteron  
> CPU Verification onsite, as discussed in more detail below.
>
> Contact Customer Support at 1-800-HP-INVENT.
> OR
> For Service Outside North America, contact the appropriate HP  
> Customer Support Center. A list of Customer Support Centers and  
> appropriate phone numbers is available at the following URL:
> http://h10018.www1.hp.com/country/us/en/wwcontact.html
>
> AMD CPU Verification Tool
> AMD is providing HP with the AMD CPU Opteron Verification Tool, a  
> rigorous software verification tool for identifying AMD Opteron x52  
> and x54 processors that may be affected, in order to help customers  
> identify any processors that may need replacement. The AMD CPU  
> Verification Tool will also indicate which processors pass the  
> verification test in order to avoid replacing processors  
> unnecessarily.
> Even though this issue appears to affect only a small number of AMD  
> Opteron processors, the AMD CPU Verification Tool has been designed  
> to be aggressive to ensure that all potentially affected processors  
> are flagged. As such, it will identify not only processors that are  
> affected by the issue and need replacement, but it will also  
> identify additional processors that may not be affected. Therefore,  
> due to the aggressive nature of the AMD CPU Verification Tool, AMD  
> and HP anticipate that the test could flag for replacement more  
> processors than those that are actually affected by the issue. All  
> processors that do not pass the CPU Verification process will be  
> replaced.
> RECEIVE PROACTIVE UPDATES : Receive support alerts (such as  
> Customer Advisories), as well as updates on drivers, software,  
> firmware, and customer replaceable components, proactively via e- 
> mail through HP Subscriber's Choice. Sign up for Subscriber's  
> Choice at the following URL:
> http://www.hp.com/go/myadvisory
>
>
>
> SEARCH TIP : For hints on locating similar documents on HP.com,  
> refer to the Search Tips document .
> To search for additional advisories related to Opteron based HP  
> ProLiant Servers, use the following search string:
> +ProLiant +Advisory +Opteron
> KEYWORDS : opteron, work station, workstation, processor, CPU
>
>
>
> Hardware Platforms Affected: HP ProLiant DL585 Server series, HP  
> ProLiant BL25p Server series, HP ProLiant DL385 Server series, HP  
> ProLiant BL45p Server series, HP ProLiant DL145 G2 Server series,  
> HP xw9300 Workstation, HP ProLiant DL585 Storage Server, HP  
> ProLiant xw25p Blade Workstation
> Operating Systems Affected: Not Applicable
> Software Affected: Not Applicable
> Support Communication Cross Reference ID: IA00659053
> ©Copyright 2006 Hewlett-Packard Development Company, L.P.
>
>
> Hewlett-Packard Company shall not be liable for technical or  
> editorial errors or omissions contained herein. The information  
> provided is provided "as is" without warranty of any kind. To the  
> extent permitted by law, neither HP or its affiliates,  
> subcontractors or suppliers will be liable for incidental, special  
> or consequential damages including downtime cost; lost profits;  
> damages relating to the procurement of substitute products or  
> services; or damages for loss of data, or software restoration. The  
> information in this document is subject to change without notice.  
> Hewlett-Packard Company and the names of Hewlett-Packard products  
> referenced herein are trademarks of Hewlett-Packard Company in the  
> United States and other countries. Other product and company names  
> mentioned herein may be trademarks of their respective owners.
>
> Please note that all documentation provided in this e-mail is  
> copyrighted material of HP. It is provided solely to complement our  
> service efforts and provide further information for your reference.  
> The documentation is provided "as is" without any warranties or  
> representations of any kind. In particular, HP does not warrant  
> that the materials are accurate, complete and up-to-date, and HP  
> specifically disclaims all other warranties and conditions, in fact  
> or in law, express or implied, including the warranties and  
> conditions of merchantable quality, merchantability, fitness for a  
> particular purpose, or non-infringement of intellectual property of  
> others.
>
>
>
>
>
> Brian Long <[email protected]>
> Sent by: [email protected]
> 04/28/2006 08:49 AM
> Please respond to
> "Discussion of Red Hat Enterprise Linux 3 (Taroon)" <taroon- 
> [email protected]>
>
>
> To
> [email protected], [email protected]
> cc
> Subject
> AMD Opteron FPU Bug
>
>
>
>
>
> http://www.reghardware.co.uk/2006/04/28/amd_opteron_fpu_bug/
>
> I wanted to tell folks I just learned of the AMD FPU bug that will be
> announced today.  This affects x52 and x54 CPUs.  You should work with
> your AMD Opteron vendors to determine if you have the affected CPUs.
> Later today the AMD announcement will come out and include a  
> diagnostic
> image which will determine if you have an affected CPU.
>
> /Brian/
> -- 
>       Brian Long                      |         |           |
>       IT Data Center Systems          |       .|||.       .|||.
>       Cisco Linux Developer           |   ..:|||||||:...:|||||||:..
>       Phone: (919) 392-7363           |   C i s c o   S y s t e m s
>
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