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 I’ve 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