Advanced Micro Devices, Inc.
Trusted memory zone

Abstract:

A system and method for providing security of sensitive information within chips using SIMD micro-architecture are described. A command processor within a parallel data processing unit, such as a graphics processing unit (GPU), schedules commands across multiple compute units based on state information. When the command processor determines a rescheduling condition is satisfied, it causes the overwriting of at least a portion of data stored in each of the one or more local memories used by the multiple compute units. The command processor also stores in the secure memory a copy of state information associated with a given group of commands and later checks it to ensure corruption by a malicious or careless program is prevented.