Editing pezy/pezy-scx/pezy-sc

{{pezy title|PEZY-SC}}
{{chip
|name=PEZY-SC
|image=pezy-sc (front).png
|designer=PEZY
|manufacturer=TSMC
|model number=PEZY-SC
|market=Supercomputer
|first announced=2013
|first launched=September, 2014
|family=PEZY-SCx
|frequency=733.33 MHz
|process=28 nm
|transistors=3,730,000,000
|technology=CMOS
|die area=411.6 mm²
|die length=19.5 mm
|die width=21.1 mm
|core count=1,024
|thread count=8,192
|power=100 W
|average power=70 W
|v core=1.0 V
|package module 1={{packages/pezy/fcbga-2112}}
}}
'''PEZY-SC''' ('''PEZY Super Computer''') is a second generation [[many-core microprocessor]] developed by [[PEZY]] and introduced in 2014. This chip, which operates at 733 MHz, incorporates 1,024 cores dissipating 100 W. The PEZY-SC powers the [[ZettaScaler]]-1.x series of supercomputers. The PEZY-SC is used in a number of [[TOP500]] & [[Green500]] supercomputers as the world's most efficient supercomputers.

== Overview ==
{{see also|pezy/pezy-1|l1=PEZY-1}}
The PEZY-SC (SC for "Super Computer") is [[PEZY]]'s second generation microprocessors which builds upon the {{pezy|PEZY-1}}. The chip contains exactly twice as many cores and incorporates a large amount of cache including 8 MB of L3$. The chip contains 2 {{armh|ARM926}} cores ({{arm|ARMv5TEJ}}) along with 1,024 simpler cores supporting 8-way [[simultaneous multithreading|SMT]] for a total of 8,192 [[logical core|threads]]. Operating at 733 MHz, the processor has a peak performance of 3.0 [[TFLOPS]] (single-precision) and 1.5 TFLOPS (double-precision). PEZY-SC was designed using 580 million gates and manufactured on [[28 nm process|TSMC's 28HPC+]]. 
{{#set:
| peak flops (single-precision) = {{#expr:733333333 * 4 * 1024}} FLOPS
| peak flops (double-precision) = {{#expr:733333333 * 2 * 1024}} FLOPS
}}
The chip has a peak power dissipation of 100 W with a typical power consumption of 70 W which consists of 10 W [[static power|leakage]] + 60 W [[dynamic power|dynamic]].

In June of 2015, PEZY-SC-based [[supercomputer]]s took all top 3 spots on the [[Green500]] listing as the 3 most efficient supercomputers. PEZY-SC powers [[Shoubu]] (1,181,952 cores, ? kW, 605.624 TFlop/s [[Linpack]] Rmax), and [[Suiren Blue]] (262,656 cores, 40.86 kW, 247.752 TFlop/s Linpack Rmax), and [[Suiren]] (328,480 cores, 48.90 kW, 271.782 TFlop/s Linpack Rmax) supercomputers (ranked 1, 2, and 3 respectively).

== Architecture ==
{{further|pezy/pezy-scx#Architecture|l1=PEZY-SCx § Architecture}}
The PEZY-SC microprocessors is made of 4 blocks called "Prefectures". The Prefecture contains 2 MiB of L3$ enclosed by 16 smaller blocks called "Cities".  Each City is made of 64 KiB of L2$, a number of special function units, and 4 smaller blocks called "Villages". A village is a block of 4 execution units. For every 2 execution units there is 2 KiB of L1D$.

[[File:pezy-sc arch.svg|700px]]

== Cache ==
PEZY-SC's cache is separate from the {{armh|ARM926}}'s cache which has an L1$ of 32 KiB (2x) and 64 KiB L2$ (shared).
{{cache size
|l1 cache=64 KiB
|l1i cache=32 KiB
|l1i break=2x16 KiB
|l1d cache=32 KiB
|l1d break=2x16 KiB
|l2 cache=64 KiB
|l2 break=1x64 KiB
}}

The chip integrates a multi-level cache hierarchy:
{{cache size
|l1 cache=3 MiB
|l1i cache=2 MiB
|l1i break=1024x2 KiB
|l1i desc=per processor element
|l1d cache=1 MiB
|l1d break=512x2 KiB
|l1d desc=per 2 processor elements
|l1d policy=
|l2 cache=4 MiB
|l2 break=4x2 MiB
|l2 desc=per city
|l2 policy=write-back
|l3 cache=8 MiB
|l3 break=4x2 MiB
|l3 desc=per prefecture
|l3 policy=
}}

Additionally, there is another 16 MiB of scratch-pad memory consisting of 16 KiB per PE.

== Memory controller ==
{{memory controller
|type=DDR4-2133
|ecc=Yes
|controllers=8
|channels=8
|width=64 bit
|max bandwidth=127.156 GiB/s
|bandwidth schan=15.89 GiB/s
|bandwidth dchan=31.79 GiB/s
|bandwidth qchan=63.58 GiB/
|bandwidth hchan=95.37 GiB/s
|bandwidth ochan=127.156 GiB/s
}}

== Expansions ==
{{expansions main
|
{{expansions entry
|type=PCIe
|pcie revision=2.0
|pcie lanes=32
|pcie config=4x8
}}
}}

== Die Shot ==
* [[28 nm process]]
* 19.5 mm × 21.1 mm
* 411.6 mm² die size

:[[File:pezy sc die shot.jpg|650px]]


:[[File:pezy-sc die shot (annotated).png|650px]]

=== Floorplan ===

:[[File:pezy-sc floorplan.png|650px]]

== External Links ==
* [https://www.top500.org/system/178478 Suiren Supercomputer on TOP500]
* [https://www.top500.org/system/178542 Shoubu Supercomputer on TOP500]
* [https://www.top500.org/system/178540 Suiren Blue on TOP500]
Has subobject "Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.	PEZY-SC - PEZY#pcie + and PEZY-SC - PEZY#package +
base frequency	733.33 MHz (0.733 GHz, 733,330 kHz) +
core count	1,024 +
core voltage	1 V (10 dV, 100 cV, 1,000 mV) +
designer	PEZY +
die area	411.6 mm² (0.638 in², 4.116 cm², 411,600,000 µm²) +
die length	19.5 mm (1.95 cm, 0.768 in, 19,500 µm) +
die width	21.1 mm (2.11 cm, 0.831 in, 21,100 µm) +
family	PEZY-SCx +
first announced	2013 +
first launched	September 2014 +
full page name	pezy/pezy-scx/pezy-sc +
has ecc memory support	true +
instance of	microprocessor +
l1$ size	64 KiB (65,536 B, 0.0625 MiB) + and 3,072 KiB (3,145,728 B, 3 MiB) +
l1d$ description	per 2 processor elements +
l1d$ size	32 KiB (32,768 B, 0.0313 MiB) + and 1,024 KiB (1,048,576 B, 1 MiB) +
l1i$ description	per processor element +
l1i$ size	32 KiB (32,768 B, 0.0313 MiB) + and 2,048 KiB (2,097,152 B, 2 MiB) +
l2$ description	per city +
l2$ size	4 MiB (4,096 KiB, 4,194,304 B, 0.00391 GiB) + and 0.0625 MiB (64 KiB, 65,536 B, 6.103516e-5 GiB) +
l3$ description	per prefecture +
l3$ size	8 MiB (8,192 KiB, 8,388,608 B, 0.00781 GiB) +
ldate	September 2014 +
main image	+
manufacturer	TSMC +
market segment	Supercomputer +
max memory bandwidth	127.156 GiB/s (130,207.744 MiB/s, 136.533 GB/s, 136,532.715 MB/s, 0.124 TiB/s, 0.137 TB/s) +
max memory channels	8 +
model number	PEZY-SC +
name	PEZY-SC +
package	FCBGA-2112 +
peak flops (double-precision)	1,501,866,665,984 FLOPS (1,501,866,665.984 KFLOPS, 1,501,866.666 MFLOPS, 1,501.867 GFLOPS, 1.502 TFLOPS, 0.0015 PFLOPS, 1.501867e-6 EFLOPS, 1.501867e-9 ZFLOPS) +
peak flops (single-precision)	3,003,733,331,968 FLOPS (3,003,733,331.968 KFLOPS, 3,003,733.332 MFLOPS, 3,003.733 GFLOPS, 3.004 TFLOPS, 0.003 PFLOPS, 3.003733e-6 EFLOPS, 3.003733e-9 ZFLOPS) +
power dissipation	100 W (100,000 mW, 0.134 hp, 0.1 kW) +
power dissipation (average)	70 W (70,000 mW, 0.0939 hp, 0.07 kW) +
process	28 nm (0.028 μm, 2.8e-5 mm) +
supported memory type	DDR4-2133 +
technology	CMOS +
thread count	8,192 +
transistor count	3,730,000,000 +