Electronic waste (e-waste) or waste electrical and electronic equipment (WEEE) is a vast and burgeoning problem in today’s society, and personal computers contribute significantly to this problem. Every computer, when finished with, must be stored, dumped, recycled, or somehow re-used. Most are dumped, at a huge cost to health and the environment, as their owners succumb to the desire to keep up with the ever-increasing power of new computers. Supercomputers and computer clusters provide even more power than ordinary desktop and laptop computers, but they too are subject to rapid obsolescence. This paper examines how clusters of obsolete computers can help to mitigate e-waste.
We propose the following hypotheses:
The lives of obsolete computers can be usefully prolonged by building them into a computing cluster.
A cluster of obsolete computers can perform at least as well as a new computer.
A large enough cluster of obsolete computers can perform comparably to a smaller cluster of new computers.
After discussing the problem of e-waste and the purpose of computing clusters, we explain the reasons for building a cluster from obsolete rather than new computers. We then report on the cluster we have built, on its performance, and on its advantages and limitations.
The novelty of this research is that it is proposing a new method of e-waste management. We are proposing to re-use old desktop machines for the purpose of mitigating the creation of new clusters. We are proposing that this be an ongoing process, with newer waste computers continually replacing older redundant machines.
E-waste is a recent term referring to electronic goods that have been discarded or have entered a period of disuse. E-waste can include many items such as televisions, electronic audio equipment, white goods, mobile phones, and computer systems (ABS, 2006; Terazono et al., 2006). However, the definition and assessment of e-waste differ across organisations and countries. Terazono et al. (2006) observe that “there is no standard definition of e-waste, and the methods used to estimate e-waste generation are not compatible among countries”.
The component of e-waste that we address here is computers, particularly personal computers constructed out of ordinary commodity parts.