Commits

Ruth Aydt committed 77df4eb0964
[svn-r24911] - Added 'workaround' option, that is on by default. It causes extra barriers before RCacquire and before and after Persists. These can be disabled (to expose IOD timing issues) with the -w flag - Made prefetch calls asynchronous. Still want to reorder ops some to allow more overlap/progress while these are in progress. - Lots of cleanup of output messages / formatting, so easier to see what's happening for demo.