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This is pretty par for the course in a lot of HW companies(esp SoC selection). Where it gets tricky is when you've pulled that move a couple times and then it t
by vvanders 10y ago
This is pretty par for the course in a lot of HW companies(esp SoC selection). Where it gets tricky is when you've pulled that move a couple times and then it turns out AMD/ARM/etc actually have the good chips.
At that point you've burned the other company so many times by changing at the last minute that it becomes hard to get real support and engagement where you actually need it.
- nomel 10y ago> actually have the good chips. Has that ever been the case yet, for ARM servers? There's no "magic" in ARM. The reduced power comes from the reduced complexity. Heck, branch prediction is fairly new in ARM. I have trouble seeing a time when an Intel chip will ever fall behind even a bucket full of ARM chips, unless workloads ever fall near zero.
- deepnotderp 10y agoThere are a lot of nice things in arm. Ie slightly less register renaming. For example, Jim Keller estimates a fully developed arm chip will be 15-30% more efficient than an equivalent x86. Now, this development hasn't happened yet, but with giants like Qualcomm, it will happen eventually.
- AlphaSite 10y agoIf this was the case (and there weren't other issues e.g. insturctuon fusion etc) then wouldn't AMD be pushing K12 far harder? It's the same ceneteral core as Zen but they don't seem to have as much confidence in it.
- deepnotderp 10y agoBecause migration is super expensive and a big part of what's preventing the movement to ARM servers. Also, the aforementioned case hasn't necessarily happened, Keller has spent forever making Zen better. They are still working on K12 IIRC, but Ryzen, for good reason, is the focus. Besides, CPUs are more and more becoming simply host systems. Besides, never doubt the word of jim keller ;)
- cperciva 10y agoReduced power comes from reduced complexity, and that has a performance cost, yes -- but it takes far more than a 10% increase in power to get a 10% increase in performance. Intel's designs, being tuned for high sequential performance, are significantly better for that purpose; but if you look at VPS services which currently only get a fraction of a CPU each, I'm sure they could run more power-efficiently with a larger fraction of a punier CPU.
- runeks 10y agoWhat's the difference between 100 ARM CPUs @ 1 watt versus one Intel CPU @ 100 watt, except that you need a bigger data center for the ARMs?
- deleted 10y ago[deleted]
- smileysteve 10y agoThe magic in arm is in Risc. in an azure (or aws) cloud where 90% of operations are webserver events, those are less than complex operations. Relational databases with sums, grouping, etc. Not using every bit of x86. And once you start talking about geospatial, advanced searching, and cryptography, you might just offload to a graphics chip.
- dahauns 10y agoWhat is this, the 90s? No one cares about RISC vs CISC or ARM vs. x86-64 (on a high-level ISA level) anymore. It's all in the implementation.