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Subject: Re: [hwloc-users] CPU info on ARM
From: Jeff Hammond (jeff.science_at_[hidden])
Date: 2014-01-28 12:38:09


I don't know the answer but I'm happy to test on my ARM systems if you
have an experiment to perform.

Right now, I have an NVIDIA Kayla board and a Parallella board, both
of which are ARMv7.

Jeff

On Tue, Jan 28, 2014 at 6:51 AM, Jeff Squyres (jsquyres)
<jsquyres_at_[hidden]> wrote:
> I passed this on to my OMPI ARM contact (Leif Lindholm). Here's what he said:
>
> "It gets a bit trickier on ARM... since we may also have (implementation
> time) configurable cache sizes and also big.LITTLE (different processor
> models executing in the same SMP system)."
>
> He passed the question on to another ARM guy, asking for further detail. I'll pass on what he says.
>
>
>
> On Jan 28, 2014, at 3:39 AM, Brice Goglin <Brice.Goglin_at_[hidden]> wrote:
>
>> Hello,
>>
>> Is anybody familiar with ARM CPUs?
>>
>> I am adding more CPU information because Intel needs more:
>> CPUVendor=GenuineIntel
>> CPUModel=Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz
>> CPUModelNumber=45
>> CPUFamilyNumber=6
>>
>> Would something similar be useful for ARM? What are the fields below
>> from /proc/cpuinfo on ARM that would be useful to developers?
>> Processor : Marvell PJ4Bv7 Processor rev 1 (v7l)
>> BogoMIPS : 1196.85
>> Features : swp half thumb fastmult vfp edsp vfpv3 vfpv3d16 tls
>> CPU implementer : 0x56
>> CPU architecture: 7
>> CPU variant : 0x1
>> CPU part : 0x581
>> CPU revision : 1
>> Hardware : Marvell Armada-370
>> Revision : 0000
>> Serial : 0000000000000000
>>
>> thanks
>> Brice
>>
>> _______________________________________________
>> hwloc-users mailing list
>> hwloc-users_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users
>
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
>
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-- 
Jeff Hammond
jeff.science_at_[hidden]