Climate-Optimised Intermediate Stop Operations: Mitigation Potential and Differences from Fuel-Optimised Configuration

The Optimised effective potential

We extend the formalism of local exchange methods to calculate and investigate the electronic structure of metals. It is well-known that the Hatree-Fock method when applied to metals shows unphysical behaviour, however the accurate treatment of exchange via DFT’s exact exchange method (EXX) and using our local Fock exchange method (LFX) can be used to describe metallic band structures accurately.

Critical exponents from optimised renormalisation group flows

Within the exact renormalisation group, the scaling solutions for O(N) symmetric scalar field theories are studied to leading order in the derivative expansion. The Gaussian fixed point is examined for d > 2 dimensions and arbitrary infrared regularisation. The Wilson-Fisher fixed point in d = 3 is studied using an optimised flow. We compute critical exponents and subleading corrections-to-scal...

Optimised Collectives on QsNet

In this paper we present an in-depth description of how QsNet supports collectives. Performance data from jobs run on 256-1024 node clusters show that the time to complete barrier synchronization is as low as 5 microseconds, with very good scalability. Results for broadcast indicate that QsNet can deliver data to 512 nodes in 8-10 microsecs and can sustain an asymptotic bandwidth in excess of 8...

Optimised finite difference computation from symbolic equations

Domain-specific high-productivity environments are playing an increasingly important role in scientific computing due to the levels of abstraction and automation they provide. In this paper we introduce Devito, an opensource domain-specific framework for solving partial differential equations from symbolic problem definitions by the finite difference method. We highlight the generation and auto...

Optimised Reasoning for SHIQ