Liste des Groupes | Revenir à c arch |
Michael S <already5chosen@yahoo.com> writes:On Mon, 09 Sep 2024 15:42:45 GMT
scott@slp53.sl.home (Scott Lurndal) wrote:
Michael S <already5chosen@yahoo.com> writes:>On Sun, 08 Sep 2024 18:32:42 GMT
scott@slp53.sl.home (Scott Lurndal) wrote:
Michael S <already5chosen@yahoo.com> writes:>On Sun, 08 Sep 2024 16:10:41 GMT
scott@slp53.sl.home (Scott Lurndal) wrote:
>
On AMD processors (and likely intel), if a core cannot
acquire a cache line in a a finite time, the core will
assert the bus lock to ensure forward progress.
Nothing to do with the operating software; purely a hardware
thing.
>
I think, on AMD processors made in this century the only cases
that resort to physical bus lock are
A) atomic accesses that cross cache boundary
B) atomic accesses that address non-cached memory regions
C) A core cannot acquire a cache line in a finite time. We
encountered this in 2010 on AMD Opteron processors with
our HyperTransport connected CXL-like chip (designed in
2005); r/t latency could be as high as 800ns to remote memory.
PathScale Infinipath, I suppose.
Actully, no.
Horus?
https://www.infoworld.com/article/2201330/3leaf-systems-scale-up-by-scaling-out.html
Date | Sujet | # | Auteur | |
2 Sep 24 | arm ldxr/stxr vs cas | 58 | jseigh | |
2 Sep 24 | Re: arm ldxr/stxr vs cas | 4 | Chris M. Thomasson | |
2 Sep 24 | Re: arm ldxr/stxr vs cas | 3 | Chris M. Thomasson | |
2 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | jseigh | |
2 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
4 Sep 24 | Re: arm ldxr/stxr vs cas | 50 | MitchAlsup1 | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 3 | Chris M. Thomasson | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | MitchAlsup1 | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 46 | jseigh | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Anton Ertl | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 44 | MitchAlsup1 | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 43 | Chris M. Thomasson | |
5 Sep 24 | Re: arm ldxr/stxr vs cas | 42 | jseigh | |
6 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | MitchAlsup1 | |
6 Sep 24 | Re: arm ldxr/stxr vs cas | 20 | Chris M. Thomasson | |
6 Sep 24 | Re: arm ldxr/stxr vs cas | 19 | MitchAlsup1 | |
7 Sep 24 | Re: arm ldxr/stxr vs cas | 18 | jseigh | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 17 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 16 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 15 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 14 | MitchAlsup1 | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 4 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | jseigh | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 9 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 6 | Michael S | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 3 | Michael S | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | Michael S | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Michael S | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | MitchAlsup1 | |
8 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 20 | Terje Mathisen | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 11 | jseigh | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 6 | Chris M. Thomasson | |
10 Sep 24 | Re: arm ldxr/stxr vs cas | 5 | jseigh | |
10 Sep 24 | Re: arm ldxr/stxr vs cas | 4 | Chris M. Thomasson | |
10 Sep 24 | Re: arm ldxr/stxr vs cas | 3 | jseigh | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | Chris M. Thomasson | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
10 Sep 24 | Re: arm ldxr/stxr vs cas | 4 | Terje Mathisen | |
10 Sep 24 | Re: arm ldxr/stxr vs cas | 3 | jseigh | |
10 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
10 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 7 | Paul A. Clayton | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | Chris M. Thomasson | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | jseigh | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | Stefan Monnier | |
12 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson | |
9 Sep 24 | Re: arm ldxr/stxr vs cas | 3 | jseigh | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 2 | jseigh | |
11 Sep 24 | Re: arm ldxr/stxr vs cas | 1 | Chris M. Thomasson |
Les messages affichés proviennent d'usenet.