Exploiting Java Instruction/Thread Level Parallelism with Horizontal Multithreading

Java bytecodes can be executed with the following three methods: a Java interpretor running on a particular machine interprets bytecodes; a Just-In-Time (JIT) compiler translates bytecodes to the native primitives of the particular machine and the machine executes the translated codes; and a Java processor executes bytecodes directly. The first two methods require no special hardware support for the execution of Java bytecodes and are widely used currently. The last method requires an embedded Java processor, picoJavaI or picoJavaII for instance. The picoJavaI and picoJavaII are simple pipelined processors with no ILP (instruction level parallelism) and TLP (thread level parallelism) supports. A so-called MAJC (microprocessor architecture for Java computing) design can exploit ILP and TLP by using a modified VLIW (very long instruction word) architecture and vertical multithreading technique, but it has its own instruction set and cannot execute Java bytecodes directly. In this paper,...

• Type: Conference
• Year: 2001
• Where: APCSAC
• Authors: Kenji Watanabe, Wanming Chu, Yamin Li
• Keywords: APCSAC 2001, Computer Architecture, Execute Java Bytecodes, Java Bytecodes, Java Processor