sector mapping

sector mapping

In this scheme the memory and cache are divided into blocks of 2^m bytes (the cache line size). A sector consists of 2^n consecutive blocks.

When a block is cached, it is read into the correct position in any sector of the cache, given by discarding the bottom m address bits and taking the next n as the block number within the sector.

That whole sector is then tagged with the remaining upper address bits and the other blocks in the sector are marked as invalid. This scheme takes advantage of locality of reference to consecutive blocks and needs fewer tags thus reducing the cost of associative access to the tags.
References in periodicals archive ?
We regularly review mapping of new build estates following a review of our procedures in 2014 to ensure our systems have the latest address data from Public Sector Mapping Agreement.
It defined major roads using Australian transport hierarchy codes supplied by the Public Sector Mapping Agencies.
For years, Arangkada has recommended a deliberate effort to map the Philippine Creative Industry, noting that more successful countries have found sector mapping to be an essential prerequisite to develop and promote the sector.
Production of cartography using Public Sector Mapping Agreement data;4.
Additionally, ITC sector mapping of voluntary business standards has strengthened the capacity of producers, exporters, policymakers and buyers to participate in more sustainable production and trade.
With the Ordnance Survey withdrawing ADDRESS-POINT from the Public Sector Mapping Agreement (PSMA) and One Scotland Mapping Agreement (OSMA) in October 2014, this will leave many organisations, including the Police, NHS Trusts, Fire & Rescue Services and utility companies unable to update many of their frontline and back office systems as they are not compatible with the new AddressBase format.
The Public Sector Mapping Agreement is saving the trust PS90,000 in licence fees compared to their previous system, and bosses hope it will mean a more effective service which ultimately saves more lives.
Aerial Surveys International, LLC was founded in 1998 and specializes in the acquisition of large-format film and digital aerial imagery for clients including private sector mapping organizations and governmental agencies.
He also noted the contribution of several private sector mapping companies to the production of the maps.
To support this through access to a comprehensive Nationwide Address Gazetteer, NHS Wales is now a member of the Public Sector Mapping Agreement (PSMA).
The AddressBase products will be free at the point of delivery to members of the Public Sector Mapping Agreement (PSMA), which includes local and central government, the emergency services and the NHS.