A programming system for doing asynchronous I/O on an 8K PDP-12

PDP: pen driven programming

Programming is an activity centred primarily around the keyboard which is not necessarily the optimal input device for all users. Little research has taken place into alternative input devices for programming despite huge advances in handwriting and voice recognition for natural language. This project explored using a pen as the primary input device for programming. A variety of different metho...

A psychological laboratory based on a PDP-11/IO with graphics

The system described here was purchased primarily for research in visual information processing and so had to have a very flexible cathode-ray tube (CRT) display. Since the computer had also to control other equipment for this research, we felt it was reasonable to try tO build a system that was general enough to run the full spectrum of experimental paradigms used in human experimental psychol...

Exploiting Asynchronous IO using the Asynchronous Iterator Model

Asynchronous IO (AIO) allows a process to continue to do other work while an IO operation initiated earlier completes. AIO allows a large number of random IO operations to be issued at once, allowing the disk subsystem to order access to data on disk, reducing average seek times considerably, as well as allowing much better utilization of disks in a multi-disk RAID environments where reads can ...

Petascale IO Using The Adaptable IO System

ADIOS, the adaptable IO system, has demonstrated excellent scalability to 29,000 cores. With the introduction of the XT5 upgrades to Jaguar, new optimizations are required to successfully reach 140,000+ cores. This paper explains the techniques employed and shows the performance levels attained.

AMULET3i - An Asynchronous System-on-Chip