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diff --git a/www/OpenProjects.html b/www/OpenProjects.html new file mode 100644 index 00000000..33888ba0 --- /dev/null +++ b/www/OpenProjects.html @@ -0,0 +1,91 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" + "http://www.w3.org/TR/html4/strict.dtd"> +<!-- Material used from: HTML 4.01 specs: http://www.w3.org/TR/html401/ --> +<html> +<head> + <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> + <title>KLEE - Open Projects</title> + <link type="text/css" rel="stylesheet" href="menu.css"> + <link type="text/css" rel="stylesheet" href="content.css"> +</head> +<body> +<!--#include virtual="menu.html.incl"--> +<div id="content"> + <!--*********************************************************************--> + <h1>KLEE Open Projects</h1> + <!--*********************************************************************--> + + This page lists a variety of open projects that are natural (and tractable) + extensions of KLEE and things that we would love to see people work on. If + you are interested in tackling any of the projects, please mail + <a href="http://keeda.stanford.edu/mailman/listinfo/klee-dev">klee-dev</a> + with your ideas -- or even better, your patches!.</a> + + <ul> + <li> + <em>Implement SMT support for Kleaver:</em> + + <p>We would like to make Kleaver (KLEE's constraint solver) a more viable + standalone product. One of the steps in this direction is to implement SMT + support. This would also allow us to enter Kleaver into + the <a href="http://www.smtcomp.org/2011/">SMT-COMP</a> theorem prover + competition, which would be a good proving ground for our optimizations + and benchmarking our underlying constraint solver (STP, currently) against + other implementations.</p> + </li> + + <li> + <em>Distributed Constraint Solving:</em> + + <p>Much of the execution time of KLEE is spent inside the constraint + solver. A natural extension would be to implement support for a + distributed constraint solver, which would run KLEE on a single machine, + but would farm out the constraints to be solved on a network of + machines.</p> + </li> + + <li> + <em>Improve User Interface:</em> + + <p>This is not a very glamorous project, but it is still + important. Currently, KLEE has a myriad of command line options and flags, + most of which are left over from its research project roots. In order to + promote KLEE's use as a user tool, we would like to clean up most of the + UI so that the default behavior matches best practice, and so that more + arcane or research-only options are hidden by default.</p> + </li> + + <li> + <em>Experiment With Other Constraint Solvers:</em> + + <p>For the most part, KLEE has been written so that it is possible to swap + in other constraint solvers, but we have never tried anything other than + STP. We would love to see the results of using other contraint solvers + (like Yices or Z3) with KLEE.</p> + </li> + + <li> + <em>Implement Expression Level Constraint Optimization:</em> + + <p>KLEE does not currently do much optimization of constraint expressions + before sending them to the constraint solver. We would like to have an + internal framework for doing optimization of constraint expressions (e.g., + (A & ~A) => 0) so that these optimizations are only done once instead of + on every solver query.</p> + + <p>In general, because KLEE is dealing with expressions which result from + dynamic execution traces, many expressions end up having constant + components. This means we can frequently apply the same optimizations a + compiler would do, but to much greater effect because we are more likely + to see constant values. For reference, see the kinds of optimizations done + by LLVM's InstCombine + pass <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/">here</a>.</p> + + <p>The bulk of this project involves defining a good framework for us to + apply optimizations to expressions, and for deciding when to attempt to + optimization expressions.</p> + </li> + </ul> +</div> +</body> +</html> diff --git a/www/menu.html.incl b/www/menu.html.incl index abb26a91..1ae4183f 100644 --- a/www/menu.html.incl +++ b/www/menu.html.incl @@ -10,6 +10,7 @@ <a href="Documentation.html">Documentation</a> <a href="Tutorials.html">Tutorials</a> <a href="Publications.html">Publications</a> + <a href="OpenProjects.html">Open Projects</a> </div> <div class="submenu"> |