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IBM Announces Strategic Collaboration with Arm

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Re: IBM Announces Strategic Collaboration with Arm

#171

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Everything. They have done for decades, and will do for decades. And what IBM focus on is probably worth looking into. IBM (imho) is in the absolute frontline in quantum computers. One could argue if the number of startups in QC means that there is an actual market or not. Companies that lives on VC or the valuation of their stock. But IBM is not showy, not on the front pages, does not live on VC or stock valuation.…

> And it's probably not breaking RSA or ECC. Evidence for this is in the number of articles that talk about simulated annealing/quantum annealing (or other optimization problems) w/r/t QC rather than crypto. Sure attention seeking headlines always focus on prime factoring, and the security aspect has a lot more enthusiast interest, but when you look past that into deeper stuff, a lot of the focus is on the optimizati…

Maybe they want to add quantum to CPLEX!

Re: IBM Announces Strategic Collaboration with Arm

#172

Earlier quoted context omitted.

Putting consumer grade (aka "commodity") hardware in a datacenter and running your infra on it is a bit of a meme, in the sense that it's not the only way of doing things. It was probably pioneered/popularized by Google but that's because writing great software was their "hammer", ie they framed every computing problem as a software problem. It was probably easier for them (= Jeff Dean) to take mediocre hardware and…

How well do commodity systems protect your financial transactions from cosmic ray-induced bit errors?

How often do you hear about them? Now divide that by the millions (billions?) of daily transactions to get an approximate error rate. That's about how well they are protected.

Re: IBM Announces Strategic Collaboration with Arm

#173
post #166
post #143

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Probably Intel and AMD aren't willing to do this deal but Arm is.

IBM actually owns x86 rights still. They last used it to do something similar called Lx86 which ran x86 VMs on POWER CPUs.

Developing a good x86 CPU is far beyond IBM's abilities. The rights aren't enough.

Re: IBM Announces Strategic Collaboration with Arm

#174
post #173
post #166

Earlier quoted context omitted.

IBM actually owns x86 rights still. They last used it to do something similar called Lx86 which ran x86 VMs on POWER CPUs.

Developing a good x86 CPU is far beyond IBM's abilities. The rights aren't enough.

Price competitive to AMD and intel? Sure. Abilities? There is no magic, the Tellium and Power11 are each as complicated as something like Epyc and the former has both a longer and taller compatibility totem pole than x86.

Anyway this post was never about building ARM or x86 CPUs, the point is they could have done a zArch fast path for x86 for "free", so there is some other strategy at play to consider doing it with ARM.

Re: IBM Announces Strategic Collaboration with Arm

#175

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That would crush latency on RAM.

The RAM and CPU would still be on the same card together, and for the typical case of a single GPU it would just be 16x lanes direct from one to the other. For cases where there are other cards, yes there would more contention, but few expansion cards are able to saturate more than a lane or two. One lane of PCIe Gen5 is a whopping 4 GB/s in each direction, so that theoretically handles a dual 10gige NIC on its own.

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Re: IBM Announces Strategic Collaboration with Arm

#176
post #140

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Ah, that explains why IBM bought RedHat. Or at least one reason for doing so.

I'd imagine close to 95% in the US, if they're running important workloads on prem on Linux, it's on RHEL. A staggering number of VMs and bare metal.

(Clarification: I'm not saying 95% of all US company Linux workloads are RHEL, not even close.

I'm saying a huge percentage of high criticality (risk of loss of life / high financial risk) are, simply because of support and the name.)

Re: IBM Announces Strategic Collaboration with Arm

#177

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From the perspective of PC building, I've always thought it would be neat if the CPU/storage/RAM could go on a card with a PCIe edge connector, and then that could be plugged into a "motherboard" that's basically just a PCIe multiplexer out to however many peripheral cards you have. Maybe it's gimmicky, but I feel like you could get some interesting form factors with the CPU and GPU cards sitting back-to-back or side…

That's basically what S-100 systems were, isn't it (on a much slower bus)?

Yes, but also in many other scenarios. The last backplane systems I saw were 90s industrial 486s.

Re: IBM Announces Strategic Collaboration with Arm

#178
post #134

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That's what I was hoping Apple was going to do with a refreshed Mac Pro. I had envisoned a smaller tower design that with PCI slots and Apple developing and selling daughter cards that were basically just a redesigned macbook pro PCB but with a PCI-E edge connector and power connector. The way I see it a user could start with a reasonably powerful base machine and then upgrade it over time and mix and match different…

Apple already experimented with this with the prototype Jonathan computer. It's very late 80's in its aesthetic, and I love it. https://512pixels.net/2024/03/apple-jonathan-modular-concept...

This is the kind of glorious thing that will only appear when Moore's law is dead and buried.

Re: IBM Announces Strategic Collaboration with Arm

#179

Earlier quoted context omitted.

IBM has two architectures which are de-facto only used by them, s390x and ppc64le. They have poured a lot of resources into having open source software support those targets, and this announcement might mean they find it easier/cheaper going forward to virtualize ARM instead and maybe even migrate slowly to ARM.

ppc64le has other machines. Raptor off the top of my head, but there's also that weird notebook project that seems to be talked about once every few years and probably won't ever happen and some pretty cool stuff in the amiga space (I don't know if that's strictly le but power is supposed to be bi-endian)

The PCB design for a small desktop computer (which is a step of the notebook project) has been finished 2 weeks ago, and they are trying to get funding to actually manufacture a few prototypes rn [0]

[0]: https://www.powerpc-notebook.org/2026/03/we-are-ready-for-pr...

Re: IBM Announces Strategic Collaboration with Arm

#180

Earlier quoted context omitted.

That would crush latency on RAM.

The RAM and CPU would still be on the same card together, and for the typical case of a single GPU it would just be 16x lanes direct from one to the other. For cases where there are other cards, yes there would more contention, but few expansion cards are able to saturate more than a lane or two. One lane of PCIe Gen5 is a whopping 4 GB/s in each direction, so that theoretically handles a dual 10gige NIC on its own.

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