News IBM intros Telum II processor — 5.5GHz chip with onboard DPU claimed to be up to 70% faster

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Blastomonas

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Seems weak compared to other offerings. Not sure what the appeal is.

Also don't see much value in quoting performance compared to its former gen. 70% improvement on crap is not an improvement. Besides, after 3 years I would expect at least as much.
 
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bit_user

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I really have to wonder how long the mainframe market is going to sustain critical mass to keep funding the development of these custom CPUs.

24 TOPs int8 seems really low. Why bother wasting the tranistors on that when any add-in accelerator would be many times that performance? E.g. an H100 is over 3,000 int8 TOPs.
I think it's because some of IBM's customers want AI capability with mainframe reliability. However, you're right that it's still very limiting. These things are way too expensive to achieve GPU-level performance through scaling, so this level of performance feels more like a tease than anything real.
 

NinoPino

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The follow sentence have something strange : "IBM introduced its new Spyre AI accelerator add-in-card developed in collaboration with IBM Research and IBM.". I suppose it should end with "...IBM Research."
 
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NinoPino

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24 TOPs int8 seems really low. Why bother wasting the tranistors on that when any add-in accelerator would be many times that performance? E.g. an H100 is over 3,000 int8 TOPs.
It is 24x8 = 192 TOPs. Not so low imho.
And considering the fact that any core can redirect the AI work on any accelerator, this means that it can work as 8x24, 1x192, 2x96, 24+168, and so on. Great flexibility.
 

JRStern

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This is mainframe architecture?
What is a DPU - some kind of smart controller?
Ask me about old 360 models, a bit of 370s, but I haven't really looked at IBM architectures since before Y2K.
 
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