System Requirement

Since ImPRO is developed in Java, ImPRO runs in any machine(Window, Unix, Linux etc) if JVM (Java Virtual Machine) is installed at the machine. JVM can be built by installing JRE1.4 or above. You can download JRE1.4 at http://java.sun.com/j2se/1.4/ for Window, Solaris, and Linux.

ImPRO Server and ImPRO Client run not only in a network but also in a local computer. They make use of both TCP/IP and UDP to deliver procedure resources.

When round trip time from requests to responses was measured, the average was about 50 msec. The test platform has about 400MHz CPU, 130M RAM memory and WindowNT4.0.

After loading ImPROc and ImPROs, the calculation of the occupied memory reads 10Mbyte. They look to consume lots of memory space in spite of compact ImPRO. These phenomena probably result from both co-loading JVM and inherent object handling mechanism of Java. Despite a lot of memory consumption, this kind of Java architecture can improve reliability of Java applications. 5% of CPU resource is consumed while running ImPRO in steady state.

Finally ImPRO makes most use of larger screen to show related information in parallel, so it would be better to use high resolution (1280*1024) and larger screen (21 inch). In a low resolution CRT, scrollbars appear to compensate for it. That means that you have to click a mouse busily.