The claim: we have demonstrated the comprehensive formal verification of the seL4 microkernel, with a complete proof chain from precise, formal statements of high-level security
Read moreCassandra
Cassandra is quite interesting – and time sync seems increasingly critical to correct operation. Here are some resources: A paper on the storage model from
Read moreA hard theorem becomes easy over time.
The basic result of the incompleteness proofs is pretty simple. The proofs are complicated because the idea was literally unthinkable until programming was invented. The
Read moreFrom Jersey to Wall Street – or the equivalent
A common configuration for FSMLabs TimeKeeper customers is to cross-couple time sources in New Jersey and New York City or London and Slough or Chicago and
Read moreReal-time Linux
My opinion has always been that the Linux-RT project was based on an unfixable engineering error. A few words on the status and the
Read moreThe Horrors of Software Patents
US Patent Number 4701722 A is a perfect example of everything software patent opponents hate about software patents: It implements mathematical functions that are pretty
Read moreThe technology disconnect
What it did was reinforce a point about the sociology of management: From cars to space shuttles, from offshore oil wells to nuclear reactors, the people who
Read moreThe story we were told at a bank that I cannot name is that all their time synchronization was the domain of an engineer tucked
Read moreBack in the day
This is an embarrassing confession when I think back on how little I knew and how much I thought I knew. At the height of
Read moreHeartbleed and open source
The Heartbleed bug was caused by a business model error. When we were in the real-time software business, our best customer was an old line
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