Rethink Scalable M:N Threading on Modern Operating Systems

Rethink Scalable M: N Threading on Modern Operating Systems

Soundmodem on modern Operating Systems

Five years ago I presented drivers for using standard PC’s with soundcards as packet radio modems [13]. The mainstream CPUs of that era were not quite powerful enough for complex signal processing, so the design at that time had to trade robustness for computational simplicity. Futhermore, operating system preferences have changed since. It is therefore time to rethink the design. In this artic...

Modern Operating Systems

ion is the key to managing complexity. Good abstractions turn a nearly impossible task into two manageable ones. The first one of these is defining and^aglementing the abstractions. The second one is using these abstractions to sol^He problem at hand. One abstraction that almost every computer user understands is the file. It is a useful piece of information, such as a digital photo, SEC. 1.1 W...

Debug Interfaces for Modern Operating Systems

Defects in software are unavoidable. These can be very difficult to trace as defects leaves infections in the program state which may spread. These infections may under certain circumstances trigger a fault, but may be hidden for a very long time or never be discovered. The number of defects and their severity affects the quality of software, as reliability and correctness must be a minimum req...

Comparative analysis of multi-threading on different operating systems applied on digital image processing

This work presents a comparative analysis of parallel image convolution implementations based on the shared-variable programming model. Those implementations use explicit compiler directives from multi-thread support libraries. The comparison between implementations was done in Windows and Linux operating systems. It considered both performance and programmability. The performance was analyzed ...