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How to find no. of cores in T2000?

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  #1 (permalink)  
Old 01-16-2008, 05:31 PM
qazmlp1209@rediffmail.com
 
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Default How to find no. of cores in T2000?

What is the command to find out the number of cores(4 or 6 or 8) in
the Netra T2000 machine?

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  #2 (permalink)  
Old 01-16-2008, 05:31 PM
Dan Foster
 
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Default Re: How to find no. of cores in T2000?

In article <1178638836.169950.212530@l77g2000hsb.googlegroups .com>, qazmlp1209@rediffmail.com <qazmlp1209@rediffmail.com> wrote:
> What is the command to find out the number of cores(4 or 6 or 8) in
> the Netra T2000 machine?


Take the output of 'psrinfo|wc -l' then divide it by 4.

psrinfo|wc -l on 8 core T2000 will say '32', meaning 32 virtual
processors.

On 6 core T2000, it will say 24.
On 4 core T2000, it will say 16.

On a broken T2000, it will say something other than 16, 24, or 32. :P

One virtual processor on T2000 = one hardware thread.
Each UltraSPARC T1 (T1000, T2000) core has 4 hardware threads.
So number of virtual processors divided by 4 equals number of cores.

-Dan
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  #3 (permalink)  
Old 01-16-2008, 05:31 PM
Richard Skelton
 
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Default Re: How to find no. of cores in T2000?

qazmlp1209@rediffmail.com wrote:
> What is the command to find out the number of cores(4 or 6 or 8) in
> the Netra T2000 machine?
>

Hi,
Take a look at:-

psrinfo -pv

Cheers
Richard
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  #4 (permalink)  
Old 01-16-2008, 05:31 PM
Dan Foster
 
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Default Re: How to find no. of cores in T2000?

In article <f1q6i5$mdl$1@athen03.muc.infineon.com>, Richard Skelton <Richard.Skelton@Infineon.com> wrote:
> qazmlp1209@rediffmail.com wrote:
>> What is the command to find out the number of cores(4 or 6 or 8) in
>> the Netra T2000 machine?
>>

> Hi,
> Take a look at:-
>
> psrinfo -pv


Ah, missed combining both args. Very nice, thank you -- that's more
elegant than doing 'psrinfo|wc -l'.

The original poster still needs to remember to divide that number by 4
on the UltraSPARC T1 (e.g. T1000, T2000) to get number of cores.

-Dan
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