RE: [Xen-ia64-devel] SMP-g status.

["Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>]

Wow!  Amazing work, Tristan!

Is this a 4-socket "future processor" with 2 cores
and 2 threads on each core?  I wonder if the threading
mechanism on this processor differs sufficiently
from hyperthreading on x86 that Xen/ia64 might need
to deal differently with threads?

Dan

> -----Original Message-----
> From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf 
> Of Tristan Gingold
> Sent: Monday, April 24, 2006 9:18 AM
> To: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-ia64-devel] SMP-g status.
> 
> Hi,
> 
> after raising max number of CPUS in kernel, I could create a 
> nice configuration:
> # xm vcpu-list
> Name                              ID  VCPU  CPU  State  
> Time(s)  CPU Affinity
> DOMU-1                             1     0   15   ---    
> 1482.1  any cpu
> DOMU-1                             1     1    0   ---     
> 802.3  any cpu
> DOMU-1                             1     2    1   ---     
> 777.3  any cpu
> DOMU-1                             1     3    2   ---    
> 1504.4  any cpu
> DOMU-1                             1     4    3   ---    
> 1504.9  any cpu
> DOMU-1                             1     5    4   ---    
> 1504.6  any cpu
> DOMU-1                             1     6    5   r--    
> 1503.5  any cpu
> DOMU-1                             1     7    6   r--    
> 1503.2  any cpu
> DOMU-1                             1     8    7   r--    
> 1502.3  any cpu
> DOMU-1                             1     9    8   ---    
> 1502.8  any cpu
> DOMU-1                             1    10    9   ---    
> 1503.3  any cpu
> DOMU-1                             1    11   10   r--    
> 1502.1  any cpu
> DOMU-2                             2     0   14   r--     
> 189.9  any cpu
> DOMU-2                             2     1   15   r--     
> 116.9  any cpu
> DOMU-2                             2     2    0   r--      
> 64.0  any cpu
> DOMU-2                             2     3    1   ---      
> 62.5  any cpu
> DOMU-2                             2     4    2   r--      
> 92.6  any cpu
> DOMU-2                             2     5    3   r--      
> 91.3  any cpu
> DOMU-2                             2     6    4   r--      
> 90.8  any cpu
> DOMU-2                             2     7    5   ---      
> 91.1  any cpu
> DOMU-2                             2     8    6   ---      
> 90.6  any cpu
> DOMU-2                             2     9    7   ---      
> 90.7  any cpu
> DOMU-2                             2    10    8   r--      
> 89.3  any cpu
> DOMU-2                             2    11    9   r--      
> 87.8  any cpu
> DOMU-2                             2    12   10   ---      
> 88.0  any cpu
> DOMU-2                             2    13   11   r--     
> 173.3  any cpu
> DOMU-2                             2    14   12   r--     
> 172.4  any cpu
> DOMU-2                             2    15   13   r--     
> 171.4  any cpu
> Domain-0                           0     0    0   ---    1025.3  0
> Domain-0                           0     1    1   r--    
> 1051.1  any cpu
> #
> 
> (domu1: 12 cpus, domu2: 16 cpus, dom0: 2 cpus).
> 
> It seems softlock detection is hit rather easily.  We have to 
> work on this issue.
> 
> Tristan.
> 
> 
> 
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