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IBM RS/6000

IBM RS/6000. CS 585 Summer 2002 By Robert Moncrief II. POWER Architecture. POWER Performance Optimized With Enhanced RISC First Introduced by IBM in 1990 Started with Micro Channel Architecture Now uses Peripheral Component Interface. Cycles for Operations.

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IBM RS/6000

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  1. IBM RS/6000 CS 585 Summer 2002 By Robert Moncrief II

  2. POWER Architecture • POWER • Performance Optimized With Enhanced RISC • First Introduced by IBM in 1990 • Started with Micro Channel Architecture • Now uses Peripheral Component Interface

  3. Cycles for Operations

  4. L1 virtual cache addressing

  5. Figure 1. AIX 4.3 Virtual Address Space Layout Size 64-bit Address Space 32-bit Address Space 1 Million TB XAbove 4 GB 64,000 TB Program stack N/A 384,000 TB Reserved 64,000 TB Shared library text & data 64,000 TB Privately loaded programs 64,000 TB Shared objects (default) 384,000 TB Program text & data Below 4GB (Segment #) 15 256 MB Reserved Shared library data 14 256 MB Available to application Available to application 13 256 MB Shared library information Shared library text 3-12 2.56 GB Available to application Available to application 2 256 MB Available to application Program data & stack 1 256 MB Available to application Program text 0 256 MB Kernel Kernel

  6. Interesting Facts • Can be big-endian and little-endian • Scalable • Improvements

  7. Any Questions? • IBM was not very helpful

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