We are working on the Texas persistent store, a persistent store that
does pointer swizzling at page fault time, to efficiently suppport huge
address spaces on standard hardware.  Addresses are resolved to native
virtual-memory addresses when a page of data is brought into the address
space of a processor---subsequent accesses incur zero address translation
overhead.  This technique can be used to support shared address spaces
across networks of heterogeneous machines, which may have different hardware
address sizes.  On machines with large hardware addresses, the swizzling
can be optimized away.  The swizzling facility is still useful for resolving
conflicting address mappings across large networks, and for backward
compatibility with 32-bit machines.  (Published papers and source code for
Texas are available via anonymous ftp from cs.utexas.edu.  See the README
file in the directory pub/garbage.)  We are also working on garbage
collection techniques that we will eventually apply to persistent and
distributed data.

wilson@cs.utexas.edu (Paul R. Wilson)
svkakkad@cs.utexas.edu (Sheetal V. Kakkad) 

Date: Sat, 23 Apr 1994 19:03:26 -0500