Semiconductor & Computer Engineering
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Difference between revisions of "pezy/pezy-scx/pezy-scnp"
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== Cache == | == Cache == | ||
| − | PEZY-SC's cache is separate from the {{armh|ARM926}}'s cache which has an L1$ of | + | 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 info | {{cache info | ||
| − | |l1i cache=2 | + | |l1i cache=2 MiB |
| − | |l1i break=1024x2 | + | |l1i break=1024x2 KiB |
|l1i extra=(per processor element) | |l1i extra=(per processor element) | ||
| − | |l1d cache=1 | + | |l1d cache=1 MiB |
| − | |l1d break=512x2 | + | |l1d break=512x2 KiB |
|l1d extra=(per 2 processor elements) | |l1d extra=(per 2 processor elements) | ||
| − | |l2 cache=4 | + | |l2 cache=4 MiB |
| − | |l2 break=4x2 | + | |l2 break=4x2 MiB |
|l2 extra=(per city) | |l2 extra=(per city) | ||
|l3 cache=8 MiB | |l3 cache=8 MiB | ||
Revision as of 23:02, 20 September 2016
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 model uses a slightly larger package, lower core voltage, slightly higher core frequency, and thus higher performance. The PEZY-SCnp is said to deliver 1.57 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+ (28 nm process).
Architecture
- Main article: PEZY-SC §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).
| Cache Info [Edit Values] | ||
| L1I$ | 2 MiB 2,048 KiB 2,097,152 B |
1024x2 KiB (per processor element) |
| L1D$ | 1 MiB 1,024 KiB 1,048,576 B |
512x2 KiB (per 2 processor elements) |
| L2$ | 4 MiB 4,096 KiB 4,194,304 B 0.00391 GiB |
4x2 MiB (per city) |
| L3$ | 8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB |
4x2 MiB (per prefecture) |
Memory controller
| Integrated Memory Controller | |
| Type | DDR4-1866 |
| Controllers | 1 |
| Channels | 8 |
| Bandwidth (single) | 14,933 MB/s |
| Bandwidth (dual) | 29,866 MB/s |
| Bandwidth (quad) | 59,732 MB/s |
| Bandwidth (octa) | 119,464 MB/s |