David Black-Schaffer

Associate prof. Uppsala University Engineering sciences Year of admission: 2015

Computers will have a more rational memory
The development of faster computers is currently limited by power consumption, with the memory system responsible for half the overall processor energy. As a Wallenberg Academy Fellow, David Black-Schaffer will develop new memory systems that more intelligently move data to improve energy efficiency.

By developing more efficient memory systems it will be possible to deliver increased performance for next-generation computer systems.

Computer system performance increased dramatically as transistors became smaller and used proportionally less energy. However, shortly after 2000 this power scaling stopped, and faster processors with more transistors started using increasingly more power. To reduce power consumption, researchers have shifted to doing more, slower calculations at the same time across parallel processors. Unfortunately, this parallelism has increased the demands on the memory system. Today accessing data through the memory system has become the bottleneck in computing performance, and consumes more than half of all the power in a processor.

To enable the next generation of computers, Associate Professor David Black-Schaffer at Uppsala University will revolutionize computers’ memory systems. As a Wallenberg Academy Fellow he will develop approaches that only move data when it is needed and to the places where it will be used. Such “intelligent” memory systems have the potential to save tremendous amounts of energy. These techniques will further be applied to new and emerging memory technologies, which will dramatically increase the storage capacity for future systems.


Photo: Markus Marcetic