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== Network On-chip (NoC) == | == Network On-chip (NoC) == | ||
− | Piton implements 3 physical [[networks on chip]] (NoC) that provide all the communication between the [[#tiles|tiles]], deliver I/O and memory traffic, and pass inter-core [[interrupt]]s. Piton implements 3 physical neworks - each consisting of two 64-bit uni-directional links (one in each direction). Packets routing implements [[dimension-order routing]]. Each packet reserves 29 bits for core address, allowing a theoretical network size | + | Piton implements 3 physical [[networks on chip]] (NoC) that provide all the communication between the [[#tiles|tiles]], deliver I/O and memory traffic, and pass inter-core [[interrupt]]s. Piton implements 3 physical neworks - each consisting of two 64-bit uni-directional links (one in each direction). Packets routing implements [[dimension-order routing]]. Each packet reserves 29 bits for core address, allowing a theoretical network size 500 million core. The three NoCs have descending priorities - i.e. NoC3 has the highest priority, followed by NoC2, followed by NoC1 with the lowest priority. |
== Documents == | == Documents == |
Facts about "Piton - Princeton"
base frequency | 1,000 MHz (1 GHz, 1,000,000 kHz) + |
bus rate | 2,800 MT/s (2.8 GT/s, 2,800,000 kT/s) + |
bus speed | 350 MHz (0.35 GHz, 350,000 kHz) + |
clock multiplier | 2.85 + |
core count | 25 + |
core voltage | 0.9 V (9 dV, 90 cV, 900 mV) + |
designer | Princeton + |
die area | 36 mm² (0.0558 in², 0.36 cm², 36,000,000 µm²) + |
die length | 6 mm (0.6 cm, 0.236 in, 6,000 µm) + |
die width | 6 mm (0.6 cm, 0.236 in, 6,000 µm) + |
first announced | August 23, 2016 + |
full page name | princeton/piton + |
instance of | microprocessor + |
l1d$ description | 4-way set associative + |
l1d$ size | 200 KiB (204,800 B, 0.195 MiB) + |
l2$ description | 4-way set associative + |
l2$ size | 1.5 MiB (1,536 KiB, 1,572,864 B, 0.00146 GiB) + |
ldate | August 23, 2016 + |
main image | + |
main image caption | Piton face + |
manufacturer | IBM + |
market segment | Server + |
max cpu count | 20,000 + |
name | Piton + |
process | 32 nm (0.032 μm, 3.2e-5 mm) + |
smp max ways | 20,000 + |
technology | CMOS + |
thread count | 50 + |
transistor count | 460,000,000 + |
word size | 64 bit (8 octets, 16 nibbles) + |