After many months of ready, Amazon at the moment has lastly made out there their new compute-oriented C5a AWS cloud cases primarily based on the brand new AMD EPYC 2nd technology Rome processors with new Zen2 cores.
Amazon had introduced method again in November their intentions to undertake AMD’s latest silicon designs. The new C5a cases scale as much as 96 vCPUs (48 bodily cores with SMT), and have been marketed to clock as much as 3.3GHz.
The occasion choices scale from 2 vCPUs with 4GB of RAM, as much as 96 vCPUs, with various bandwidth to elastic block storage and community bandwidth throughput.
The precise CPU getting used right here is an AMD EPYC 7R32, a customized SKU that’s seemingly solely out there to Amazon / cloud suppliers. Due to the character of cloud cases, we really don’t know precisely the core depend of the piece and whether or not it is a 64 or 48- core chip.
We rapidly fired up an occasion to test the CPU topology, and we’re seeing that the chip has two quadrants populated with the total 2 CCDs with 4 CCXs in complete per quadrant, and two quadrants with seemingly solely a single CCD populated, with solely two CCXs per quadrant.
I rapidly ran some exams, and the CPUs are idling at 1800MHz and enhance as much as 3300MHz most. All-core frequencies (96 threads) might be achieved at as much as 3300MHz, however will throttle all the way down to 3200MHz after a couple of minutes. Compute heavy workloads reminiscent of 456.hmmer will run at round 3100MHz all-core.
While it’s actually attainable that it is a 64-core chip, Amazon’s providing of 96 vCPU metallic cases level out in opposition to that. On the opposite hand, the 96 vCPU’s configuration of 192GB wouldn’t instantly match up with the reminiscence channel depend of the Rome chip until the 2 lesser chip quadrants additionally every had one reminiscence controller disabled. Either that, or there’s merely two additional CCDs that aren’t can’t be allotted – is sensible for the virtualised cases however could be bizarre for the metallic occasion providing.
The new C5a Rome-based cases can be found now in eight sizes within the US East (N. Virginia), US East (Ohio), US West (Oregon), Europe (Ireland), Europe (Frankfurt), Asia Pacific (Sydney), and Asia Pacific (Singapore) areas.
