[Beowulf] If I were specifying a new custer...

[Scott Atchley]

What do your apps need?

• Lots of memory?

Perhaps Power9 or Naples with 8 memory channels? Also, Cavium ThunderX2.

• More memory bandwidth?

Same as above.

• Max single thread performance?

Intel or Power9?

• Are your apps GPU enabled? If not, do you have budget/time/expertise to
do the work?

If not, then stick with CPUs.

• Need lots of PCIe for accelerators, SSDs, NICs?

Naples.

• Interconnect?

If Intel, either of the above. Does OPA work with Naples (I don't know)? If
Power/ARM and possibly Naples, then IB.

Sorry to give the default computer science answer of "It depends."

Scott

On Thu, Oct 11, 2018 at 3:09 PM Douglas Eadline <deadline at eadline.org>
wrote:

> All:
>
> Over the last several months I have been reading about:
>
> 1) Spectre/meltdown
> 2) Intel Fab issues
> 3) Supermicro MB issues
>
> I started thinking, if I were going to specify a
> single rack cluster, what would I use?
>
> I'm assuming a general HPC workload (not deep learning or
> analytics) I need to choose Xeon/Epyc, IB/Omni,
> Lustre/Ceph/BeGFS, should all nodes have GPU?
>
> I'm interested what members of this list think?
>
>
> --
> Doug
>
> --
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>
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