Originally posted by Ibidem
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I am trying to say that there are no "single, fat" Linux servers with 16 or 32 cpus for sale. This IS true. The problem I have is: what do I mean with "single fat" Linux server? Clearly it can not be translated to "SMP". I need to read a bit and then come back. But my point is true and has always been true: There are no "single fat" Linux servers for sale with 16 or 32 cpus. But there are Linux servers for sale with 1000s of cpus and 10s of TB RAM. It looks like this:
Linux servers 1-8 cpus for sale. TRUE.
Linux servers with 512 - 8192 cores for sale. TRUE. (These are clusters)
Nothing in between. No 16 or 32 cpu Linux servers for sale. Why?
Linux developer Ted Tso wrote in a blog that until recently, 24-32 cores (not cpus) where considered as exotic hardware that no Linux dev had access to. So, how can Linux scale well on 24 cores, when no one can optimize for such servers?
I need to define "single, fat" Linux server better. Clearly I can not call them "SMP" servers. All large servers today with 32-64 cpus, mix tech from NUMA and SMP it seems. So I need to stop saying that. But my point remains: there are no Linux servers for sale with 16 cpus. Or 32 or 64. But there are 2048 core servers for sale (they must be clusters).
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