The multi-core/many-core revolution has brought up a hardly precedented diversity in computer architecture. While parallelism id the common property, granularity of concurrent processing resources may easily span multiple orders of magnitude. This requires design decisions in the organisation of concurrent program execution to be made differently depending on the concrete execution platform. We propose a hardware virtualisation layer that separates the aspect of granularity from the expression (or detection) of concurrency and provides uniform access to concurrent computing resources.