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Open POWER Cores and ISA

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Ganesan Narayanasamy

The document highlights the timeline and key developments of the Open Power ISA, including the announcement of the open ISA at the OpenPOWER Summit in August 2019 and subsequent contributions to the ISA by 2020. It outlines the compliance requirements for supporting architectures and details the features introduced in Power ISA 3.1, such as new instructions and architectural enhancements. Additionally, it provides links to resources and videos related to various Power architecture microarchitectures.

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Highlights of Open Power ISA, IBM-A2I, IBM- A20, Power 10
POWER ISA Timeline:  August 20,2019 – Open ISAAnnouncement at NA OpenPOWER Summit  February 13, 2020 – Final Draft of the End User License Released by OPF: https://openpowerfoundation.org/final-draft-of-the-power-isa-eula-released/  April 2020 – POWER ISA 3.0 contribution to OPF -Includes: • Compliancy subsets • Custom Extension Space (Sandbox) • Incremental updates from prior publication  May 2020 – POWER ISA 3.1 contribution to OPF  May 2020 – POWER ISA workgroup chartered in OPF
Power Architecture Format – The Books
Power ISA Compliancy A supporting/ compliant design must : - Support Base architecture (never optional) And support atleast one of the compliancy subsets: - ACS: AIX compliancy subset - LCS: Linux compliancy subset - SFFS: Scalar fixed-point+ Floating-point compliancy subset - SFS: Scalar Fixed-point compliancy subset And may utilize the combination of hardware and firmware
Open Power ISA Compliancy subsets
Power ISA 3.1 Foundation for Expansion  General: Byte reverse instructions, Vector integer multiply/Divide/Modulo instructions, 128 bit Binary integer operations, VSX scalar minimum/maximum/compare- Quad precision  SIMD: VSX 32 byte storage Access operations, SIMD permute- class operations, Bit-Manipulation operations VSX load/store Rightmost element operations, VSX Mask manipulation operations, VSX PCV generate operations for expand/compress  Pause/ wait reserve  Copy/ paste extensions  Hypervisor interrupt location control  Instruction Prefix support: 88 and modifying opcodes
Power ISA 3.1 Prefix architecture
A2I Power Processor Core
A2I Architectural Capabilities
A2I Microarchitecture
A2O Power Processor Core
A2O Microarchitecture
Power10 Microarchitecture
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Open POWER Cores and ISA
Resources : ISA : https://wiki.raptorcs.com/w/images/f/f5/PowerISA_public.v3.1.pdf ISA and Power10 : https://www.youtube.com/watch?v=imzUxijnv7M Power10 : https://www.youtube.com/watch?v=27VRdI2BGWg A2O : https://www.youtube.com/watch?v=Bz3tFvKTLxg https://static.sched.com/hosted_files/openpowerna2020/39/Bill%20Flynn.pdf https://www.youtube.com/watch?v=2IshMgIGCR4 A2I : https://www.youtube.com/watch?v=DshEFxTZd6I https://github.com/openpower-cores/a2i - A2I (VHDL) A2I user manual : https://wiki.alcf.anl.gov/parts/images/c/cf/A2.pdf

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Open POWER Cores and ISA

  • 1. Highlights of Open Power ISA, IBM-A2I, IBM- A20, Power 10
  • 2. POWER ISA Timeline:  August 20,2019 – Open ISAAnnouncement at NA OpenPOWER Summit  February 13, 2020 – Final Draft of the End User License Released by OPF: https://openpowerfoundation.org/final-draft-of-the-power-isa-eula-released/  April 2020 – POWER ISA 3.0 contribution to OPF -Includes: • Compliancy subsets • Custom Extension Space (Sandbox) • Incremental updates from prior publication  May 2020 – POWER ISA 3.1 contribution to OPF  May 2020 – POWER ISA workgroup chartered in OPF
  • 4. Power ISA Compliancy A supporting/ compliant design must : - Support Base architecture (never optional) And support atleast one of the compliancy subsets: - ACS: AIX compliancy subset - LCS: Linux compliancy subset - SFFS: Scalar fixed-point+ Floating-point compliancy subset - SFS: Scalar Fixed-point compliancy subset And may utilize the combination of hardware and firmware
  • 5. Open Power ISA Compliancy subsets
  • 6. Power ISA 3.1 Foundation for Expansion  General: Byte reverse instructions, Vector integer multiply/Divide/Modulo instructions, 128 bit Binary integer operations, VSX scalar minimum/maximum/compare- Quad precision  SIMD: VSX 32 byte storage Access operations, SIMD permute- class operations, Bit-Manipulation operations VSX load/store Rightmost element operations, VSX Mask manipulation operations, VSX PCV generate operations for expand/compress  Pause/ wait reserve  Copy/ paste extensions  Hypervisor interrupt location control  Instruction Prefix support: 88 and modifying opcodes
  • 7. Power ISA 3.1 Prefix architecture
  • 29. Resources : ISA : https://wiki.raptorcs.com/w/images/f/f5/PowerISA_public.v3.1.pdf ISA and Power10 : https://www.youtube.com/watch?v=imzUxijnv7M Power10 : https://www.youtube.com/watch?v=27VRdI2BGWg A2O : https://www.youtube.com/watch?v=Bz3tFvKTLxg https://static.sched.com/hosted_files/openpowerna2020/39/Bill%20Flynn.pdf https://www.youtube.com/watch?v=2IshMgIGCR4 A2I : https://www.youtube.com/watch?v=DshEFxTZd6I https://github.com/openpower-cores/a2i - A2I (VHDL) A2I user manual : https://wiki.alcf.anl.gov/parts/images/c/cf/A2.pdf