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тАО06-30-2010 07:19 AM
тАО06-30-2010 07:19 AM
I have an RP7420 with apparently 8 CPUs.
the CPUs from the ioscan & cstm is attached. How can I know if the cpu is dual core & i have 4 CPUs instead of single core & 8 CPUs?
My understanding is that if "CPU Slot Number" - "Cell Slot Number" & "Cabinet Slot Number" are the same - means it is the same cpu.
Another question, CPUs in RP7420 are to be installed if only 2 at slot 0 & 2 ?
Solved! Go to Solution.
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тАО06-30-2010 07:22 AM
тАО06-30-2010 07:22 AM
Re: cstm & CPU number
As per my knowledege you can identify it using the product no. of the CPU.
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тАО06-30-2010 07:28 AM
тАО06-30-2010 07:28 AM
Re: cstm & CPU number
Now attached!
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тАО06-30-2010 07:40 AM
тАО06-30-2010 07:40 AM
Re: cstm & CPU number
If you have assigned an other cell board, then you have to check out.
But if it is a single board Npar then 4 physical cpu's are default.
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тАО06-30-2010 07:45 AM
тАО06-30-2010 07:45 AM
SolutionThe CPU revision is listed as "PA8800 3.2". This indicates the CPU model is PA-8800, which is always dual-core.
In the PA-RISC world, the *only* dual-core CPUs are PA-8800 and PA-8900. All the other PA-RISC CPUs are single-core.
MK
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тАО06-30-2010 08:10 AM
тАО06-30-2010 08:10 AM
Re: cstm & CPU number
from the cstm output you see 4 cpus/cell; what does the CPU (0A) - CPU (0B) mean? isn't 0A or 0B a slot on the cell board?
can we mix PA8800 3.1 & PA8800 3.2 together?
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тАО06-30-2010 08:23 PM
тАО06-30-2010 08:23 PM
Re: cstm & CPU number
>>In this case, since I got 8 cpus from ioscan means I have 4 physical cpus, each is dual core.
Ans is No.
as per the CSTM output you have 8 Physical CPUs.
Suraj
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тАО06-30-2010 08:25 PM
тАО06-30-2010 08:25 PM
Re: cstm & CPU number
One more thing to know how many physical cpu you have run these commands.
1.top
2.dmesg | grep processor | wc -l
Suraj
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тАО06-30-2010 08:28 PM
тАО06-30-2010 08:28 PM
Re: cstm & CPU number
As said before (other thread), the PA8800 is always dual core and you see 2 CPUs per CPU slot in cstm, hence you have 2 modules = 4 physical cores on each cell, 2 slots are still free.
Compare with
# parstatus
Hope this helps!
Regards
Torsten.
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тАО06-30-2010 10:32 PM
тАО06-30-2010 10:32 PM
Re: cstm & CPU number
I added another thread because I gave 10 points to one person and it seems that nobody looks to the thread anymore.
There is a conflicting information, though u torsten make more sense.
parstatus gave me 4 CPUs & 4 Empty slots per each cell, although the cell can host only 4 CPUs max, this is conflicting information, why can't they give us commands to get different sets of answers: Physical CPUs, Empty Slots, cores ...
Suraj, you are mistaken, 8 CPUs in ioscan, PA8800 (dual core) means 4 physical CPUs & means 4 slots available for expansion on both cells.