* Re: [9fans] Multicore support ARM RaspberryPi
@ 2017-07-21 9:47 cinap_lenrek
0 siblings, 0 replies; 4+ messages in thread
From: cinap_lenrek @ 2017-07-21 9:47 UTC (permalink / raw)
To: 9fans
> Does (any flavour of) plan9 / inferno make use of several cores on
> (any flavour of) ARM?
yep. 9front zynq kernel runs fine with the two cores, all caches enabled.
--
cinap
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [9fans] Multicore support ARM RaspberryPi
2017-07-21 9:23 ` David du Colombier
@ 2017-07-21 9:56 ` Hugues Evrard
0 siblings, 0 replies; 4+ messages in thread
From: Hugues Evrard @ 2017-07-21 9:56 UTC (permalink / raw)
To: 9fans; +Cc: Dan Iorga
On 21/07/17 10:23, David du Colombier wrote:
>> Does (any flavour of) plan9 / inferno make use of several cores on
>> (any flavour of) ARM?
>
> Yes, the current Raspberry kernel developed by Richard Miller
> can handle the four cores on the Raspberry Pi 3.
Great, thanks for the prompt reply!
Hugues
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [9fans] Multicore support ARM RaspberryPi
2017-07-21 9:04 Hugues Evrard
@ 2017-07-21 9:23 ` David du Colombier
2017-07-21 9:56 ` Hugues Evrard
0 siblings, 1 reply; 4+ messages in thread
From: David du Colombier @ 2017-07-21 9:23 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs; +Cc: Dan Iorga
> Does (any flavour of) plan9 / inferno make use of several cores on
> (any flavour of) ARM?
Yes, the current Raspberry kernel developed by Richard Miller
can handle the four cores on the Raspberry Pi 3.
It is available in /n/sources/contrib/miller/9/bcm
--
David du Colombier
^ permalink raw reply [flat|nested] 4+ messages in thread
* [9fans] Multicore support ARM RaspberryPi
@ 2017-07-21 9:04 Hugues Evrard
2017-07-21 9:23 ` David du Colombier
0 siblings, 1 reply; 4+ messages in thread
From: Hugues Evrard @ 2017-07-21 9:04 UTC (permalink / raw)
To: 9fans; +Cc: Dan Iorga
Hi all,
Does (any flavour of) plan9 / inferno make use of several cores on
(any flavour of) ARM?
We are investigating how a program can create interference (e.g. slow
down) with one running on different a different core in the context of
embedded, real-time systems. It turns out that most real-time OSes have
poor support of multicore, but the plan9 state of affairs is not clear
to us.
I guess plan9 on x86 do support multicore, but is it the case on ARM? In
particular, on the raspberry-pi 3?
Thanks, and if possible keep Dan (CC'ed) in the loop.
Hugues
^ permalink raw reply [flat|nested] 4+ messages in thread
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