Evènement pour le groupe Séminaire du LaBRI

Date 2010-10-07  14:00-14:30
TitreSém LaBRI. VMKit: a Substrate for Managed Runtime Environments 
RésuméManaged Runtime Environments (MREs), such as the JVM and the CLI, form an attractive environment for program execution, by providing portability and safety, via the use of a bytecode language and automatic memory management, as well as good performance, via just-in-time (JIT) compilation. Nevertheless, developing a fully featured MRE, including e.g. a garbage collector and JIT compiler, is a herculean task. As a result, new languages cannot easily take advantage of the benefits of MREs, and it is difficult to experiment with extensions of existing MRE based languages. This talk will describe and evaluates VMKit, a first attempt to build a common substrate that eases the development of high-level MREs. We have successfully used VMKit to build two MREs: a Java Virtual Machine and a Common Language Runtime. An extensive study of this infrastructure assesses the ease of implementing new MREs or MRE extensions and evaluates the resulting performance. In particular, it took one person only one month to develop a Common Language Runtime using VMKit. VMKit furthermore has perfor- mance comparable to the well established open source MREs Ca- cao, Apache Harmony and Mono, and is 1.2 to 3 times slower than JikesRVM on most of the DaCapo benchmarks. 
LieuAmphi LaBRI 
OrateurGaël Thomas 
UrlLIP6, Paris 

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