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Forward Slice Core

Project description

An ideal core microarchitecture for processors

As the market of edge devices grows, there is still no ideal solution for the processor architecture. The choice is between the out-of-order cores providing high performance at the expense of increased complexity and power consumption and the in-order cores, which are simpler and less power hungry but with poorer performance. To find a solution, the EU-funded FSC project aims to provide a novel core microarchitecture – the Forward Slice Core (FSC). It provides both flavours of processor core microarchitectures by replacing the out-of-order hardware with much simpler in-order hardware queues smartly steered with instructions using the notion of a load’s forward slice: the in-order and the out-of-order core for high performance.


There are two major flavors of processor core microarchitectures, namely the in-order core and the out-of-order core. Out-of-order processors deliver high performance while incurring high design complexity, large chip area and high power consumption. In-order processors on the other hand feature low complexity, small chip area and low power consumption, but deliver limited performance. There is a clear need for a novel core microarchitecture that delivers high performance at low hardware complexity, low cost and low power consumption. This is of particular interest for mobile and edge devices (e.g. tablets, smartphones, smartwatches, etc.) where increasingly high performance is needed at low cost and low power consumption. The mobile and edge device market is a huge market which continues to grow. High-performance out-of-order processors are too costly and too power-hungry, while in-order processors deliver insufficient performance for the increasingly high-performance demands of emerging mobile and edge workloads and use cases.

We propose a novel core microarchitecture, called the Forward Slice Core (FSC) microarchitecture, which provides high performance at low cost and low power consumption. FSC achieves a dramatic improvement in efficiency by replacing the expensive and high-complexity out-of-order hardware with much simpler in-order hardware queues into which instructions are intelligently steered for high performance using the notion of a load's forward slice. FSC has the potential to improve performance per Watt per euro by at least an order of magnitude.

The overall objective of this PoC project is to build a strong benchmarking and IPR portfolio to convince potential processor manufacturers to license the Forward Slice Core microarchitecture. The project will strengthen the evaluation of the FSC proposal through simulation and real-hardware implementation, and develop a licensing strategy for commercialization.



Net EU contribution
€ 150 000,00
Sint pietersnieuwstraat 25
9000 Gent

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Vlaams Gewest Prov. Oost-Vlaanderen Arr. Gent
Activity type
Higher or Secondary Education Establishments
EU contribution
No data

Beneficiaries (1)