Galois is pleased to host the following tech talk. These talks are open to the interested public. Please join us!   title:  Verifying seL4-based Systems   presenter: Simon Winwood   time: Tuesday, 01 February 2011, 10:30am   location:Galois Inc.421 SW 6th Ave. Suite 300, Portland, OR, USA(3rd floor of the Commonwealth building)   abstract:   In […]

We are pleased to announce the availability of a new Galois tech talk video: “Program Inconsistency Detection using Weakest Preconditions”, presented by Aaron Tomb.  More details about the talk are available on the announcement page. Program Inconsistency Detection using Weakest Preconditions from Galois Video on Vimeo. For more videos, please visit http://vimeo.com/channels/galois.

Galois is pleased to host the following tech talk. These talks are open to the interested public. Please join us!   title: Program Inconsistency Detection using Weakest Preconditions   presenter: Aaron Tomb   time: Tuesday, 25 January 2011, 10:30am   location:Galois Inc.421 SW 6th Ave. Suite 300, Portland, OR, USA(3rd floor of the Commonwealth building)   abstract:  Many tools […]

We are pleased to announce the availability of a new Galois tech talk video: “Control Flow Graph-guided Exploration in DDT”, presented by Rebekah Leslie.  More details about the talk are available on the announcement page. Control Flow Graph-guided Exploration in DDT from Galois Video on Vimeo.   For more videos, please visit http://vimeo.com/channels/galois.

Galois is pleased to host the following tech talk. These talks are open to the interested public. Please join us!   title: Control-flow Graph Guided Exploration in DDT   presenter: Rebekah Leslie   time: Tuesday, 11 January 2011, 10:30am   location:Galois Inc.421 SW 6th Ave. Suite 300, Portland, OR, USA3rd floor of the Commonwealth building) […]

We are pleased to announce the availability of a new Galois tech talk video: “The Rubinius Virtual Machine”, presented by Brian Ford. More details about the talk are available on the announcement page. The Rubinius Virtual Machine from Galois Video on Vimeo. For more videos, please visit http://vimeo.com/channels/galois.

We are pleased to announce the availability of a new Galois tech talk video: “Formal Methods Applied to Control Software”, presented by Alwyn Goodloe. More details about the talk are available on the announcement page. Formal Methods Applied to Control Software from Galois Video on Vimeo. Formal Methods Applied to Control Software from Galois Video […]

Galois is pleased to host the following tech talk. These talks are open to the interested public. Please join us!

title:

The Rubinius Virtual Machine

speaker:

Brian Ford

time:

10:30am, Tuesday, 30 November 2010

location:

Galois Inc.421 SW 6th Ave. Suite 300, Portland, OR, USA(3rd floor of the Commonwealth building)

abstract:

Ruby is a highly dynamic, strongly-typed programming language created by Yukihiro Matsumoto in 1993 and first released in 1995. It borrows from Smalltalk, Lisp, and Perl. Ruby has single inheritance, mixins, and syntax features like omission of parentheses that make it well-suited for embedded domain-specific languages. Ruby was popularized by the Ruby on Rails web development framework.The Rubinius project began as an implementation of the Ruby programming language roughly following the design of the Smalltalk-80 virtual machine described in the Blue book (“Smalltalk-80: the language and its implementation” by Adele Goldberg and David Robson). We have extended the initial implementation based on modern research in virtual machines, garbage collectors, and just-in-time (JIT) compilers. Rubinius currently features a stack-oriented opcode virtual machine, generational garbage collector, and LLVM-based JIT compiler. Most of the Ruby core library and the bytecode compiler are written in Ruby.We will examine the main features of Rubinius and take a deeper dive into some aspects of the virtual machine and JIT compiler. We will also look at possible future work to address memory load, startup, and suitability for using Rubinius in Android phones. If there is time and interest, we will discuss implementing programming languages besides Ruby on Rubinius.

bio:

Brian Ford began contributing to the Rubinius project in December 2006 shortly after the creator, Evan Phoenix, announced the project. He is presently employed by Engine Yard, Inc to work full-time on Rubinius. Brian is keenly interested in languages of all kinds, from mathematics and various programming languages to Spanish and Japanese. He has primarily used C/C++, Tcl, Python, and Ruby in Geographic Information Systems, physical security systems monitoring and web application development. He has a B.Sc. in Mathematics from Portland State University.

We are pleased to announce the availability of a new Galois tech talk video: “Copilot: A Hard Real-Time Runtime Monitor”, presented by Lee Pike. More details about the talk are available on the announcement page.

Copilot: A Hard Real-Time Runtime Monitor from Galois Video on Vimeo.

For more videos, please visit http://vimeo.com/channels/galois.

Galois is pleased to host the following tech talk. These talks are open to the interested public. Please join us!

title:

Formal Methods Applied to Control Software

speaker:

Alwyn Goodloe

time:

10:30am, Tuesday, 16 November 2010

location:

Galois Inc.421 SW 6th Ave. Suite 300, Portland, OR, USA(3rd floor of the Commonwealth building)

abstract:

Critical cyber-physical systems, such as avionics, typically have one or more components that control the behavior of dynamical physical systems. The design of such control systems is well understood with mature and sophisticated foundations, but control engineers typically only work on Matlab/Simulink models, ignoring the implementation all together. I will speak about an ongoing collaboration with Prof. Eric Feron of Georgia Tech aimed at narrowing this gap. I will briefly describe the design of a Matlab to C translator being written in Haskell and verified using the Frama-C tool and the Prototype Verification System (PVS). In addition, I will give a survey of our efforts in enhancing PVS’ capabilities in this area by building a Linear Algebra library targeted at the math used by control engineers.

bio:

Alwyn Goodloe obtained his B.Sc. in Computer Science from Old Dominion University in 1985 and an M.Sc. in Mathematics from George Mason University in 1992. He worked for fourteen years in the software industry as a software engineer, database administrator, Unix system administrator, and technologist. In 1999, he returned to graduate school to study at the University of Pennsylvania, where he obtained a Ph.D. in Computer and Information Science in 2008. At Penn he conducted research in the area of computer and network security. He is currently a research scientist at the National Institute of Aerospace in Hampton, Virginia. At NIA his research focus has been formal methods applied to high-reliable systems such as avionics.