STATIC SOFTWARE SCHEMES Page marking

C.mmp - page marking

• Wulf and Bell, 1972, Carnegie Mellon

• C.mmp multiprocessor

• The essence: keep the read-write shared data out of the cache at all times.

• Only the read-only shared pages can be cached in the private cache memories.

• Pages are marked as "cacheable" using a bit in the relocation registers.

• The scheme is extremely conservative:

  • relatively easy realization,
  • low processing power [OWICK89].