What is JOP?

, , Leave a comment

What is JOP?
JOP stands for ‘Java Optimized Processor’. The JOP is a hardware implementation of a Java Virtual Machine. The JOP allows for a small hardware JVM to be embedded in real-time systems. One of the features of JOP is the ability to predict execution time of Java byte codes. JOP provides the highest clock frequency of all other recognized Java processors when executed in FPGA.

Java although popular on desktop systems, seldom runs in an embedded state. Common uses of Java are the thread support in language that runs on the Java Virtual Machine. The use of Java Virtual Machine as a just in time compiler or for interpretations was feasible; however it was impractical as well. The development of JOP afforded developers a small sized processor at a lower cost. In addition, it increased the acceptance rate of Java on certain systems.

During the early years, Sun developed three different types of Java processors, MicroJava, PicoJava and UltraJava. Each processor varied in function, accomplishable feats and cost. Since then, several processors have been developed all with great expectations, however process of JOP reaching its full potential has been extremely slow.

Though unsuccessful, developers have steadily tried to benchmark JOP since its introduction to the market. The most practical form of benchmark for JOP would be the testing of the application mean to run, but due to limitations on embedded systems, this has not worked. The SPECjvm98, the SPEC used to compare results, is too bulky to run. With the absence of a customary benchmark, other smaller markers were developed. The smaller benchmark provides a mock-up of the communications system and the active environment. The instructions from the master system make up the communications system and the actors and the sensors compose the environment. Tests have determined that use of a JOP can be up to 500 times faster than the interpretations of JVM in an embedded system for a standard processor.

Tea Time Quiz

[forminator_poll id="23176"]
 

Leave a Reply