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PEZY-SCnp - PEZY
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Revision as of 01:17, 3 November 2017 by David (talk | contribs) (Cache)

Template:mpu PEZY-SCnp (SC - Super Computer; np - New Package) is a revised version of the PEZY-SC model by PEZY introduced in may of 2016. The new chip, which made use of a slightly different package in order to address a number of signal-related issues (DRAM/PCIe signal failures). The new model uses a slightly larger package, lower core voltage, slightly higher core frequency, and thus higher performance. Operating at 766 MHz, the processor has a peak performance of 3.14 TFLOPS (single-precision) and 157 TFLOPS (double-precision). PEZY also upgraded the connections from PCIe Gen2 to Gen3. As with the PEZY-SC, the SCnp is also manufactured on TSMC's 28HPC+.


Architecture

Further information: PEZY-SC § Architecture and PEZY-SCx § Architecture

The PEZY-SCnp's architecture is identical to the PEZY-SC.

Cache

PEZY-SC's cache is separate from the ARM926's cache which has an L1$ of 32 KiB (2x) and 64 KiB L2$ (shared).

[Edit/Modify Cache Info]

hierarchy icon.svg
Cache Organization
Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.

The chip integrates a multi-level cache hierarchy:

[Edit/Modify Cache Info]

hierarchy icon.svg
Cache Organization
Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory.

The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC.

Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies.

Note: All units are in kibibytes and mebibytes.
L1$3 MiB
3,072 KiB
3,145,728 B
L1I$2 MiB
2,048 KiB
2,097,152 B
1024x2 KiBper processor element 
L1D$1 MiB
1,024 KiB
1,048,576 B
512x2 KiBper 2 processor elements 

L2$4 MiB
4,096 KiB
4,194,304 B
0.00391 GiB
  4x2 MiBper citywrite-back

L3$8 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
  4x2 MiBper prefecture 

Memory controller

[Edit/Modify Memory Info]

ram icons.svg
Integrated Memory Controller
Max TypeDDR4-2133
Supports ECCYes
Controllers8
Channels8
Width64 bit
Max Bandwidth127.156 GiB/s
130,207.744 MiB/s
136.533 GB/s
136,532.715 MB/s
0.124 TiB/s
0.137 TB/s
Bandwidth
Single 15.89 GiB/s
Double 31.79 GiB/s
Quad 63.58 GiB/
Hexa 95.37 GiB/s
Octa 127.156 GiB/s

Expansions

[Edit/Modify Expansions Info]

ide icon.svg
Expansion Options
PCIeRevision: 3.0
Max Lanes: 32
Configuration: 4x8
Facts about "PEZY-SCnp - PEZY"
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
PEZY-SCnp - PEZY#pcie +
has ecc memory supporttrue +
l1$ size3,072 KiB (3,145,728 B, 3 MiB) +
l1d$ descriptionper 2 processor elements +
l1d$ size1,024 KiB (1,048,576 B, 1 MiB) +
l1i$ descriptionper processor element +
l1i$ size2,048 KiB (2,097,152 B, 2 MiB) +
l2$ descriptionper city +
l2$ size4 MiB (4,096 KiB, 4,194,304 B, 0.00391 GiB) +
l3$ descriptionper prefecture +
l3$ size8 MiB (8,192 KiB, 8,388,608 B, 0.00781 GiB) +
max memory bandwidth127.156 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 channels8 +
peak flops (double-precision)1,570,133,331,968 FLOPS (1,570,133,331.968 KFLOPS, 1,570,133.332 MFLOPS, 1,570.133 GFLOPS, 1.57 TFLOPS, 0.00157 PFLOPS, 1.570133e-6 EFLOPS, 1.570133e-9 ZFLOPS) +
peak flops (single-precision)3,140,266,663,936 FLOPS (3,140,266,663.936 KFLOPS, 3,140,266.664 MFLOPS, 3,140.267 GFLOPS, 3.14 TFLOPS, 0.00314 PFLOPS, 3.140267e-6 EFLOPS, 3.140267e-9 ZFLOPS) +
supported memory typeDDR4-2133 +