On 14.01.2016, at 01:28, D. Heinze <[email protected]> wrote: > > I have a couple questions that I have only been able to find vague or > partial answers to on line: > 1. Does UIMA still use C for implementing the CAS or is it all Java now?
The UIMA Java SDK is written in Java (no C). Although the way that UIMA-J manages the CAS internally using various heaps is more C-like than Java-like. > 2. Does UIMA use the file system to implement the CAS persistence layer > during runtime? Core UIMA doesn't use the file system unless asked to (i.e. when you serialize to disk). The framework internally keeps all its data in memory. Although, I have to admit, I don't know how the checkpoints that I believe are supported by the CPE are implemented (never used that feature). If you see massive disk IO, it might be due to the OS swapping? > a. I'm curious because my engine loads all its resources into memory, > but between the time that it reads in a document and when it outputs the > results, the system profiler shows a lot of disk activity. This is plain > UIMA, not UIMA-AS Cheers, -- Richard
