From: PEM moderator
To: Multiple recipients of list PEM <>
Date: Wed, 7 Aug 2002 14:27:33 +0200
Subject: PEM | 12.08.02 | M.280

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   Dear colleagues,

   Next  Monday  we  have  an extra PEM by Vivek Sarkar from the IBM T.J.
   Watson Research Center who will give an overview of the Jikes Research
   Virtual Machine for Java.

   This announcement can be found at <http://www.cwi.nl/~pem>

                The Jikes Research Virtual Machine for Java

   Date:    12.08.02
   Time:    13:30
   Venue:   M.280
   Speaker: Vivek Sarkar
   Title:   The Jikes Research Virtual Machine for Java

   In  this  talk,  we  give  an  overview  of the Jikes Research Virtual
   Machine  for  Java,  built  in  the  Jalapeņo project at the IBM T. J.
   Watson  Research  Center.  The  Jikes RVM has three key distinguishing
   features.  First,  the  Jikes RVM is itself implemented in Java and is
   self-hosted!  This  design choice brings with it several advantages as
   well  as technical challenges. The advantages include a uniform memory
   space for VM objects and application objects, and ease of portability.
   Second,  the  Jikes  RVM  performs  a  lightweight m:n mapping of Java
   threads  on  OS-level pthreads, thus resulting in enhanced scalability
   on SMPs. Third, the Jikes RVM takes a compile-only approach to program
   execution.  Instead of providing both an interpreter and a JIT/dynamic
   compiler, it provides two dynamic compilers --- a quick non-optimizing
   "baseline"  compiler, and a slower but smarter optimizing compiler. An
   adaptive  optimization system is used to dynamically select the subset
   of  methods and optimization levels, for compilation by the optimizing
   compiler.

   The  current  Jikes  RVM system has been ported to three SMP platforms
   (AIX/PowerPC,   Linux/PowerPC,   and   Linux/IA-32).  This  talk  will
   highlight  our design decisions and experiences in working towards our
   goal  of building a high-performance VM for executing Java programs on
   SMP  servers.  Additional  information on the Jalapeno project and the
   Jikes   RVM   can   be   found  at  www.research.ibm.com/jalapeno  and
   www.ibm.com/developerworks/oss/jikesrvm

   Have a nice day.
     _________________________________________________________________

   The  programming environment meetings are a forum for the presentation
   and  discussion  of  new  ideas,  ongoing and finished work. A typical
   meeting  addresses  a subject in the area of programming environments,
   program  generation, algebraic specification, term rewriting, parsing,
   etc.  A presentation ideally takes between 45 and 90 minutes. Meetings
   taking  longer  than 45 minutes are interrupted by a coffeebreak. Most
   Thursdays,  a  meeting is held which starts at 10:00 am. in one of the
   rooms at CWI/WINS. Exceptionally, dates or times may change.

   The    program    of    the    meetings    is    available   on   WWW:
   http://www.cwi.nl/~pem
     _________________________________________________________________