Difference between revisions of "POWER8E"
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| − | POWER8 | + | '''POWER8E''' or '''POWER8 with NVLink''' processors have a different socket than standard POWER8 chips. |
| − | Compared to standard POWER8, the POWER8 with NVLink modifies: | + | Compared to standard POWER8, the POWER8 with NVLink modifies: |
* 2<sup>nd</sup> CAPP unit added, X2 removed | * 2<sup>nd</sup> CAPP unit added, X2 removed | ||
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* NVLink support added in extended ES | * NVLink support added in extended ES | ||
* Chip height: 2 C4 rows added | * Chip height: 2 C4 rows added | ||
| + | |||
| + | Without A-bus or SMP over PCIe, the processors in a multisocket configuration instead use X-Bus for SMP. The chip size is 659 mm<sup>2</sup>, rather than 649 mm<sup>2</sup> for POWER8, and only available for the ''S822LC for HPC'', specifically the ''8335-GTB'' model. | ||
| + | <ref>Caldeira, Alexandre Bicas; Haug, Volker. [https://www.redbooks.ibm.com/redpapers/pdfs/redp5405.pdf IBM Power System S822LC for High Performance Computing Introduction and Technical Overview] (PDF). IBM Redpaper. ISBN 9780738455617.</ref><ref>Gupta, Sumit. [https://www.ibm.com/blogs/systems/ibm-nvidia-present-nvlink-server-youve-waiting/ IBM & NVIDIA present the NVLink server you’ve been waiting for] (HTML). 2016-09-08. IBM IT Infrastructure Blog.</ref> | ||
== External Links == | == External Links == | ||
Revision as of 13:38, 3 January 2018
| POWER8E | |
|---|---|
| POWER ISA | 2.07 |
| Process node | 22nm |
| Maximum slices | 12 |
| Maximum cores | 12 SMT8 |
| L2 cache / slice | 512kB |
| L3 cache / slice | 8MB |
| Production availability | 2016 |
| Production stepping(s) | DD2.1 |
| ← POWER8 | POWER9 → |
POWER8E or POWER8 with NVLink processors have a different socket than standard POWER8 chips.
Compared to standard POWER8, the POWER8 with NVLink modifies:
- 2nd CAPP unit added, X2 removed
- x8 PHB
- x8 IOP
- A-bus removed, NVLink added
- NVLink support added in extended ES
- Chip height: 2 C4 rows added
Without A-bus or SMP over PCIe, the processors in a multisocket configuration instead use X-Bus for SMP. The chip size is 659 mm2, rather than 649 mm2 for POWER8, and only available for the S822LC for HPC, specifically the 8335-GTB model. [1][2]
External Links
References
- ↑ Caldeira, Alexandre Bicas; Haug, Volker. IBM Power System S822LC for High Performance Computing Introduction and Technical Overview (PDF). IBM Redpaper. ISBN 9780738455617.
- ↑ Gupta, Sumit. IBM & NVIDIA present the NVLink server you’ve been waiting for (HTML). 2016-09-08. IBM IT Infrastructure Blog.
