Why We Need >32-Bits

  • Because 32-bits is barely enough...

    • Count: 0..4,294,967,295
      -2,147,483,648..2,147,483,647
    • Memory: <$4/Mbyte DRAM ==>
      <$16K for 4 Gbytes of DRAM
  • Warning signs Iíve noticed recently...

    • Solaris process size limited to ~2Gbytes
    • Unix file system APIs break with >2 Gbyte files
    • >4 Gbyte disks
    • 1 Gbyte DRAM CAD workstations
    • 1+ Gbyte CAD files
    • 20 million transistor chip ==> ~50 integers/transistor

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