Amazon Announces C7g AWS Instances Coming Powered By Graviton3

[phoronix]

Phoronix: Amazon Announces C7g AWS Instances Coming Powered By Graviton3

Amazon Web Services today shared that C7g instances are coming powered by Graviton3, their next-gen in-house AArch64 processors...

https://www.phoronix.com/scan.php?pa...nces-Graviton3

[tildearrow]

Are these processors available for purchase? I wish they were...

[uid313]

Are these processors available for purchase? I wish they were...

I think not, but I wish they were.
I think Alibaba made some high-performance open source RISC-V CPU too, but also not available for purchase.

[PerformanceExpert]

Are these processors available for purchase? I wish they were...

Graviton isn't which is the point, however you can buy Ampere Altra CPUs using the same Neoverse N1 core as Graviton 2 but with 25% more cores and 32% higher frequency.

[coder]

you can buy Ampere Altra CPUs using the same Neoverse N1 core as Graviton 2 but with 25% more cores and 32% higher frequency.

Awww... please tell us something we don't know, like what kind of core these are using! I'm sure you have some ideas about that.

[boxie]

Awww... please tell us something we don't know, like what kind of core these are using! I'm sure you have some ideas about that.

just saw speculation of it being N2

[coder]

just saw speculation of it being N2

That doesn't fit with it offering only 25% speedup, though. It could, but that's a little low, according to what ARM has said. Here's ARM's performance analysis, assuming the same manufacturing process and clock speed.


Source: https://www.anandtech.com/show/16640...-cmn700-mesh/6

So, Amazon would either be seriously low-balling the performance or else they actually dropped the clock speed by 5% or so. And Graviton 2 already ran at a relatively low clock speed.

[boxie]

That doesn't fit with it offering only 25% speedup, though. It could, but that's a little low, according to what ARM has said. Here's ARM's performance analysis, assuming the same manufacturing process and clock speed.


Source: https://www.anandtech.com/show/16640...-cmn700-mesh/6

So, Amazon would either be seriously low-balling the performance or else they actually dropped the clock speed by 5% or so. And Graviton 2 already ran at a relatively low clock speed.

I think the advertised perf uplift has been lowballed - that and AWS will be wanting to keep power low for $ reasons if they can

[name99]

Awww... please tell us something we don't know, like what kind of core these are using! I'm sure you have some ideas about that.

V1. It’s 8-wide like V1, and SVE, not SVE2.

[coder]

V1. It’s 8-wide like V1, and SVE, not SVE2.

Ah, yes. For some reason, it didn't even occur to me they'd use V1 cores. I guess probably because I think of Graviton as their main cloud workhorse, whereas V-series seems like more of a HPC-type core.

At the very least, I'd have expected them to use some special designation, like calling them Graviton 3c, because it'll be awkward when they introduce a N2-based CPU that further increases integer performance but actually reduces FPU (per-core, at least). And given the area- & power- efficiency advantages of N2, I'm sure it's coming.