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Volker Simonis

Volker Simonis received a diploma and PhD degree in computer
science from the University of Tubingen/Germany. After working for SUN
Microsystems he switched to SAP where he's currently working in the
JIT Compiler Technology group. You can check out his (somewhat outdated) website
for more info.

 

Weblogs

This blog describes how to build both, a 64-bit and a 32-bit version of OpenJDK 8 on a plain, vanilla WindowsXP 64-bit operating system using only free (as in free beer) tools.

At the FOSEDM 2011 I've heared Chris Lattner's very nice "LLVM and Clang" keynote. The claims he made in his talk have been very impressing: he was speaking about Clang being a "...

Usually it's not big fun to be "supporter of the week" but recently, when I was on duty, I got this somehow unusual request on our support queue. If you're interested in Bytecode...

Here comes the second part of "HotSpot development on Linux with NetBeans". While the first part focused on building and running the different flavors (opt/debug, client/server JIT...

Here comes yet another step-by-step tutorial which explains how to fetch the OpenJDK sources, compile them and work with them inside the NetBeans IDE. It focuses on building and running the...

The default interpreter that comes with the Hotspot VM is the so called "Template Interpreter". It is called template interpreter, because it is basically created at runtime (every time...

Although JCK tests are not a regression test suite it is probably not uncommon that they (or at least a significant subset of them) are used as automated tests. To do this successfully, a number...

Recently I did some benchmarking with the HotSpot and because my program was obviously too slow, I began to browse the HotSpot sources for some secret tuning parameters that could save my day. And...