Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
Problem with SMP on 220R [SOLVED]
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Gentoo on Sparc
View previous topic :: View next topic  
Author Message
cybernet-
n00b
n00b


Joined: 05 Dec 2006
Posts: 2

PostPosted: Tue Dec 05, 2006 3:21 am    Post subject: Problem with SMP on 220R [SOLVED] Reply with quote

Hi,

I have a sun ultraspac II 2x 450mhz

I'm using kernel 2.6.17-r8 and I've compiled the kernel with SMP support but it doesn't seem to detect the 2nd CPU.
no error compiling kernel, no error booting

uname -a
Linux 2.6.17-gentoo-r8 #3 SMP Sun Dec 3 23:29:00 EST 2006 sparc64 sun4u GNU/Linux
cat /proc/cpuinfo

cpu : TI UltraSparc II (BlackBird)
fpu : UltraSparc II integrated FPU
prom : OBP 3.23.1 1999/07/16 12:08
type : sun4u
ncpus probed : 2
ncpus active : 1
D$ parity tl1 : 0
I$ parity tl1 : 0
Cpu0Bogo : 900.44
Cpu0ClkTck : 000000001ad2e172
MMU Type : Spitfire
State:
CPU0: online

dmesg | grep -i cpu
[ 14.283685] CPU[0]: Caches D[sz(16384):line_sz(32)] I[sz(16384):line_sz(32)] E[sz(4194304):line_sz(64)]
[ 14.286336] Brought up 1 CPUs


no errors in dmesg

anyone can help?

thanks


Last edited by cybernet- on Wed Dec 06, 2006 2:12 am; edited 1 time in total
Back to top
View user's profile Send private message
gust4voz
Retired Dev
Retired Dev


Joined: 09 Sep 2003
Posts: 373
Location: Buenos Aires, Argentina

PostPosted: Tue Dec 05, 2006 11:18 am    Post subject: Reply with quote

You probably enabled support for just 2 CPUs in the kernel right?
Leave it at the default of 32, it's usually easier and works.
In the case of the 220R if i remember right you'll have to enable support for at least 4 since the chipset for said machine is a 4-cpu one and they're mapped on different busses (when it's really used for 4 CPUs two live on one bus and the other two on another, but for the 220 it's one on each thus the internal numbering skips one and with just support for 2 processors it'll just probe for the first bus).
_________________
Gustavo Zacarias
Gentoo/SPARC monkey
Back to top
View user's profile Send private message
cybernet-
n00b
n00b


Joined: 05 Dec 2006
Posts: 2

PostPosted: Wed Dec 06, 2006 2:12 am    Post subject: Reply with quote

recompile with 4 cpu support... and it worked

thanks !

cat /proc/cpuinfo
cpu : TI UltraSparc II (BlackBird)
fpu : UltraSparc II integrated FPU
prom : OBP 3.23.1 1999/07/16 12:08
type : sun4u
ncpus probed : 2
ncpus active : 2
D$ parity tl1 : 0
I$ parity tl1 : 0
Cpu0Bogo : 900.45
Cpu0ClkTck : 000000001ad2d07a
Cpu2Bogo : 900.09
Cpu2ClkTck : 000000001ad2d07a
MMU Type : Spitfire
State:
CPU0: online
CPU2: online
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Gentoo on Sparc All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum