On 2018/11/18 22:03, Samuel Neves wrote:
> On 11/17/18 12:36 AM, Li, Aubrey wrote:
>> On 2018/11/17 7:10, Dave Hansen wrote:
>>> Just to be clear: there are 3 AVX-512 XSAVE states:
>>>
>>> XFEATURE_OPMASK,
>>> XFEATURE_ZMM_Hi256,
>>> XFEATURE_Hi16_ZMM,
>>>
>>> I honestly
On Tue, Nov 20, 2018 at 1:32 PM Li, Aubrey wrote:
> Thanks for your program, Samuel, it's very helpful. But I saw a different
> output on my side, May I have your glibc version?
>
This system is running glibc 2.27, and kernel 4.18.7. The Xeon Gold
5120 also happens to be one of the Skylake-SP mod
On 2018/11/18 22:03, Samuel Neves wrote:
> On 11/17/18 12:36 AM, Li, Aubrey wrote:
>> On 2018/11/17 7:10, Dave Hansen wrote:
>>> Just to be clear: there are 3 AVX-512 XSAVE states:
>>>
>>> XFEATURE_OPMASK,
>>> XFEATURE_ZMM_Hi256,
>>> XFEATURE_Hi16_ZMM,
>>>
>>> I honestly
On 11/17/18 12:36 AM, Li, Aubrey wrote:
> On 2018/11/17 7:10, Dave Hansen wrote:
>> Just to be clear: there are 3 AVX-512 XSAVE states:
>>
>> XFEATURE_OPMASK,
>> XFEATURE_ZMM_Hi256,
>> XFEATURE_Hi16_ZMM,
>>
>> I honestly don't know what XFEATURE_OPMASK does. It does not
On 2018/11/17 7:10, Dave Hansen wrote:
> On 11/15/18 4:21 PM, Li, Aubrey wrote:
>> "Core cycles where the core was running with power delivery for license
>> level 2 (introduced in Skylake Server microarchitecture). This includes
>> high current AVX 512-bit instructions."
>>
>> I translated license
On 11/15/18 4:21 PM, Li, Aubrey wrote:
> "Core cycles where the core was running with power delivery for license
> level 2 (introduced in Skylake Server microarchitecture). This includes
> high current AVX 512-bit instructions."
>
> I translated license level 2 to frequency drop.
BTW, the "high"
On 11/15/18 4:21 PM, Li, Aubrey wrote:
> On 2018/11/15 23:40, Dave Hansen wrote:
>> On 11/14/18 3:00 PM, Aubrey Li wrote:
>>> AVX-512 component has 3 states, only Hi16_ZMM state causes notable
>>> frequency drop. Add per task Hi16_ZMM state tracking to context switch.
>>
>> Just curious, but is the
On 2018/11/15 23:40, Dave Hansen wrote:
> On 11/14/18 3:00 PM, Aubrey Li wrote:
>> AVX-512 component has 3 states, only Hi16_ZMM state causes notable
>> frequency drop. Add per task Hi16_ZMM state tracking to context switch.
>
> Just curious, but is there any public documentation of this? It seem
On 11/14/18 3:00 PM, Aubrey Li wrote:
> AVX-512 component has 3 states, only Hi16_ZMM state causes notable
> frequency drop. Add per task Hi16_ZMM state tracking to context switch.
Just curious, but is there any public documentation of this? It seems
really odd to me that something using the same
9 matches
Mail list logo
