Intel Communities: Message List

Re: Contact info for correcting typographical errors?

webadmin@intel.com — Thu, 08 Dec 2011 20:03:40 GMT

No response from Sonny. Any other contact person who comes to mind?

Re: Idiot needs help! Need to identify upgraded CPU.

webadmin@intel.com — Wed, 07 Dec 2011 05:09:32 GMT

Typing in "site:intel.com virtualization E4600" into google provides these two links:

http://ark.intel.com/products/32242/Intel-Core2-Duo-Processor-E4600-(2M-Cache-2_40-GHz-800-MHz-FSB)

which tells me that your E4600 is a Core2 Duo Desktop processor, and

http://ark.intel.com/VTList.aspx

which, when I clicked on "Intel Core2 Duo Desktop Processor" gave me a list of processors in this class sorted by whether or not they support virtualization.

At this point, selecting the processor is a straightforward matter of matching up what's on that page with what your motherboard supports.

As to actually swapping out the processor when the new one arrives, there are two widely-accepted techniques:

1) Use a static wrist strap and plenty of thermal paste.

2) Buy two processors and use the static wrist strap and thermal paste on the second one after frying the first.

MSR_PKG_RAPL_PERF_STATUS availability?

webadmin@intel.com — Tue, 06 Dec 2011 18:03:35 GMT

I'm writing a driver for the RAPL MSRs and have come across the following in the documentation:

"MSR_PKG_RAPL_PERF_STATUS can report performance impact of power limiting, but its availability may be model-specific."

[pg 14-30, v3B, Oct. 2011]

1) This is listed as MSR_PKG_PERF_STATUS in table 34-10 [pg 34-158 v3C Oct. 2011]. Please fix.

2) I'm getting an I/O error when trying to read this MSR (0x613). The rest of the PKG MSRs are fine, so I'm guessing this is confirmation that MSR_PKG_PERF_STATUS isn't available on my dev machine [family=6, model=42, stepping=7].

3) I'm targetting this driver for the Xeon version of Sandy Bridge. I think I heard that we're getting the C revision. Will it be available there? Does anyone have a chart showing which steppings have this enabled?

RTFM is a welcome answer so long as a pointer is given to which FM I should R.

Thanks,

Barry Rountree

Contact info for correcting typographical errors?

webadmin@intel.com — Mon, 05 Dec 2011 05:22:38 GMT

As the Pin maintainers are well aware I tend to notice the occasional typographical error in the technical documentation. I'm doing a close reading of a few chapters of the Oct. 2011 edition of volume 3B and have found a handful that are worth correcting.

Where should these corrections be sent?

As an example:

"Time Window for Power Limit #2 (bits 55:49): Indicates the length of time

window over which the power limit #2 The numeric value encoded by bits 23:17

is represented by the product of 2^Y *F; where F is a single-digit decimal

floating-point value between 1.0 and 1.3 with the fraction digit represented by

bits 23:22, Y is an unsigned integer represented by bits 21:17. The unit of this

field is specified by the “Time Units” field of MSR_RAPL_POWER_UNIT. This field

may have a hard-coded value in hardware and ignores values written by

software." [Vol. 3B, 14-32]

23:22 -> 55:54

21:17 -> 53:49

[I think these are correct --- it's a simple cut 'n' paste error from the #1 case.]

Thanks,

Barry