1. A method of operating a support process of a virtual computing node for providing accelerated input and output for a work process executing in the virtual computing node, the method comprising: monitoring for a file mapping attempt initiated by the work process of a plurality of work processes executing on the virtual computing node, wherein the plurality of work processes each comprise a virtual machine; in response to the file mapping attempt, identifying a first region in memory already allocated to a cache service, wherein the cache service is configured to access data for the plurality of work processes on the virtual computing node and cache the data in the memory, and wherein the cache service is shared between the virtual computing node and at least one other virtual computing node on a host computing system; and associating the first region in memory with the work process.