X-bit Labs reports ARM revealed specifications of technology required for heterogeneous multi-core processors:
Microprocessor technologies designer ARM on Monday unveiled specifications of cache coherency, a technology crucially needed for multi-core microprocessors as well as multi-socket servers. ARM announced the latest AMBA 4 interface and protocol specification featuring the AMBA 4 AXI Coherency Extensions (ACE).
Cache coherency is essential in multicore computing applications to efficiently maintain the consistency of data stored in local caches of a shared resource. The AMBA 4 ACE specification enables system level cache coherency across clusters of multicore processors, such as the ARM Cortex-A15 MPCore processors and ARM Mali-T604 graphics processors. This ensures optimum performance and power efficiency of complex heterogeneous SoC designs, and is designed to address next generation computing across mobile, home, networking and gaming applications.