Stiggy930

回覆  MirageKnight


   
what kind of gpgpu design inside ?
anonymoushk 發表於 2020-11-21 14:31

It has a 512 bit wide SIMD unit like AVX-512 and does not use any GPUs/FPGAs (yet). Therefore, Fujitsu has to use more nodes (158,976 nodes) than Summit (Top 500 2nd place which "has 4,356 nodes, each one housing two 22-core Power9 CPUs and six NVIDIA Tesla V100 GPUs.")

it is the first processor to use the ARMv8.2-A Scalable Vector Extension SIMD instruction set with 512-bit vector implementation.[4]

US's 3 new super computers, Aurora (Intel Sapphire Rapid + 6 * Intel Xe HPC), El Capitan (AMD Zen 4 Epyc + 6 * AMD Instinct), Frontier (AMD Zen 4 Epyc + 4 * AMD Instinct) are all projected to have higher throughput than 富岳 due to the high amount of GPUs.

https://en.wikipedia.org/wiki/Fujitsu_A64FX
https://www.top500.org/lists/top500/2020/11/
https://en.wikipedia.org/wiki/Aurora_(supercomputer)
https://www.anandtech.com/show/1 ... pus-gpus-2-exaflops

anonymoushk

回覆 41# Stiggy930


   
then it was more like a pure processing cpu with good simd unit (not hot like intel)
but not GPGPU structure as  "mirageknight" said

Stiggy930

回覆  Stiggy930


   
then it was more like a pure processing cpu with good simd unit (not hot lik ...
anonymoushk 發表於 2020-11-26 20:56

I am not entirely sure to be honest. Some how Fujitsu A64FX has 4 management cores to dispatch jobs to the other 48 worker cores.

Each CPU has 48 cores built as a "node" – the Fugaku node has 4 "assistant cores", however Fujitsu intends to produce lower specification machines with zero or two assistant cores.[2][3]

https://en.wikipedia.org/wiki/Fujitsu_A64FX

May be something like PEZY in a way?!

anonymoushk

回覆 43# Stiggy930


   
Fugaku’s FUjitsu A64fx Processor is…
10
 an Many-Core ARM CPU…
 48 compute cores + 2 or 4 assistant (OS) cores
 Brand new core design
 Near Xeon-Class Integer performance core
 ARM V8 --- 64bit ARM ecosystem
 Tofu-D + PCIe 3 external connection
 …but also an accelerated GPU-like processor
 SVE 512 bit x 2 vector extensions (ARM & Fujitsu)
 Integer (1, 2, 4, 8 bytes) + Float (16, 32, 64 bytes)
 Cache + scratchpad-like local memory (sector cache)
 HBM2 on package memory – Massive Mem BW (Bytes/DPF ~0.4)
 Streaming memory access, strided access, scatter/gather etc.
 Intra-chip barrier synch. and other memory enhancing features

OS means operating system ?
SCE 512 bit vector extension @_@

https://www.r-ccs.riken.jp/R-CCS ... m/1-01_Matsuoka.pdf

kbpaul

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Stiggy930

回覆  Stiggy930


   
Fugaku’s FUjitsu A64fx Processor is…
10
 an Many-Core ARM CPU…
 48 co ...
anonymoushk 發表於 2020-11-28 21:42

I think assistant cores are same thing as management cores which talk to OS directly, they will be responsible to dispatch job to the 48 compute cores.

PEZY computing was using a few MIPS cores for management cores too.