2 results about "Fixed point algorithm" patented technology

The present disclosure provides neural network computing methods and systems that can reduce hardware cost. A neural network computing method of one embodiment can include receiving a neural network model comprising asymmetric operations, each asymmetric operation comprising one or more fixed-point operands that are derived from corresponding floating-point operands through asymmetric quantization; compiling, by a compiler, a given asymmetric operation of the neural network model into a symmetric operation comprising a combined offset value, wherein the combined offset value is a constant computed by the compiler by at least merging zero points of inputs and outputs of the given asymmetric operation; and generating a symmetric neural network model comprising the symmetric operation for execution in a fixed-point algorithm by inference hardware.

The present invention discloses a Spectre vulnerability protection system and method based on a fixed point algorithm, relates to the technical field of computer attack security analysis, and solves the technical problem that the prior art fails to distinguish whether a protection statement has a Spectre vulnerability when protecting a program, thereby causing excessive statement protection and program performance loss. The present invention obtains a program from a database, marks the program with sensitive information, and tracks the sensitive information based on a bit granularity algorithm to obtain a secret value; retrieves a security domain, sets a security level label, determines a state domain according to the security level label, sequentially executes the program to obtain an over-estimated value; calculates a state transition of the program configuration according to the over-estimated value; obtains the protected program based on a fixed point, and adds defense to the program according to the fixed point; the present invention specifically protects statements that may cause Spectre vulnerabilities, thereby reducing performance loss caused by protection.