Difference between revisions of "POWER8E"

From RCS Wiki
Jump to navigation Jump to search
(Add part numbers)
 
(One intermediate revision by one other user not shown)
Line 22: Line 22:
 
}}
 
}}
  
'''POWER8E''' (also known as '''POWER8 with NVLink''', '''8335-GTB POWER8''', or '''POWER8+''') processors have a different socket than standard POWER8 chips.
+
'''POWER8E''' (also known as '''POWER8 with NVLink''', '''POWER8’''' (with a prime symbol), '''8335-GTB POWER8''', or '''POWER8+''') processors have a different socket than standard POWER8 chips.
  
 
Compared to a standard POWER8 Single Chip Module (SCM), the POWER8 with NVLink modifies:
 
Compared to a standard POWER8 Single Chip Module (SCM), the POWER8 with NVLink modifies:
Line 35: Line 35:
 
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.
 
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>
 
<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>
 +
 +
== Configurations ==
 +
 +
{| class="wikitable sortable"
 +
|+ Known POWER8E parts
 +
! Part
 +
! Cores
 +
|-
 +
| 00UL668
 +
| 10
 +
|-
 +
| 00UL670
 +
| 8
 +
|}
 +
 +
Sourced from [[:File:POWER8 wNVLink DS v1.7 11DEC2017 pub.pdf|POWER8E data sheet v1.7]] (see Table 6-2 on page 65).
  
 
== External Links ==
 
== External Links ==

Latest revision as of 00:18, 20 September 2022

Processor Information
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 (also known as POWER8 with NVLink, POWER8’ (with a prime symbol), 8335-GTB POWER8, or POWER8+) processors have a different socket than standard POWER8 chips.

Compared to a standard POWER8 Single Chip Module (SCM), 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]

Configurations

Known POWER8E parts
Part Cores
00UL668 10
00UL670 8

Sourced from POWER8E data sheet v1.7 (see Table 6-2 on page 65).

External Links

References

  1. Caldeira, Alexandre Bicas; Haug, Volker. IBM Power System S822LC for High Performance Computing Introduction and Technical Overview (PDF). IBM Redpaper. ISBN 9780738455617.
  2. Gupta, Sumit. IBM & NVIDIA present the NVLink server you’ve been waiting for (HTML). 2016-09-08. IBM IT Infrastructure Blog.