Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!usc!ucsd!ucbvax!hplabs!hpcc01!aspen!mhjohn
From: mhjohn@aspen.IAG.HP.COM (Mark H Johnson)
Newsgroups: comp.arch
Subject: Re: 64 bits--why stop there?
Message-ID: <1360004@aspen.IAG.HP.COM>
Date: 20 Aug 90 16:43:18 GMT
References: <1263.26cdaecc@waikato.ac.nz>
Organization: Information Architecture Group, HP
Lines: 9

Clearing large memory can be done with tricks as noted in an 
earlier response.  However, often memory is tested before it
is used.  Trying a few simple patterns to identify pages to map
out can defer maintenance.   The only portion
of physical memory that must be intialized is that needed to boot
the system.  The rest can be done in background or "pay as you go".
At least one mini vendor (Prime) has done this for some time.

Mark H. Johnson  IAG Hewlett-Packard, mhjohn@iag.hp.com