21 Dec
2015
21 Dec
'15
2:04 a.m.
On Sun, 20 Dec 2015, Ede Wolf wrote:
I'm not sure either. I have seen the same threads/cores, siblings/cores
difference with both AMD and Intel. Audio DSP in Linux (jack, lv2, etc)
seems to be all floats, so it just might matter yes.
--
Len Ovens
www.ovenwerks.net
AMD seems to
have something similar enough to hyperthreading to be wary
of. A number of the AMD CPUs shows twice as many threads as cores. I
know that they do double caching, I don't know if this is what the Linux
kernel is seeing as shadow cpus or not.
At least for their FX eight core cpus, two cores share one floating point
unit, so ever since early 80x86SX times, where you could buy a dedicated
80x87 FPU, those are not to be considered "full" cores any more. Though ought
be complete asides the FPU, and therefore a little more "true" than HT.
Not sure however, if that matches your idea of a shadow CPU