Technologies are generally described for methods and systems effective to provide accelerator buffer access. An operating system may allocate a range of addresses in virtual address spaces and a range of addresses in a buffer mapped region of a physical (or main) memory. A request to read from, or write to, data by an application may be read from, or written to, the virtual address space. A memory management unit may then map the read or write requests from the virtual address space to the main or physical memory. Multiple applications may be able to operate as if each application has exclusive access to the accelerator and its buffer. Multiple accesses to the buffer by application tasks may avoid a conflict because the memory controller may be configured to fetch data based on respective application identifiers assigned to the applications. Each application may be assigned a different application identifier.