US 12,164,884 B2 · Tanh and sigmoid function execution

Abstract

Examples described herein relate to instructions to request performance of tanh and sigmoid instructions. For example, a compiler can generate native tanh instructions to perform tanh. In some examples, a tanh function can be compiled into instructions that include an instruction to perform either tanh(input) or tanh(input)/input depending on a value of the input to generate an intermediate output; an instruction to cause a performance of generation of scale factor based on the input; and an instruction to cause performance of a multiplication operation on the intermediate result with the scale factor. For example, a sigmoid function can be compiled to cause a math pipeline to perform a range check and performs operations based on a range.

Claims15

Dependent claims

A computer-implemented method comprising:

performing a tanh function in a math pipeline and Floating Point Unit (FPU) pipeline of at least one processor of a graphics processing unit by:
compiling the tanh function into a tanh instruction, a minimum instruction, and one multiply instruction;
based on a value range of an input x, generating an intermediate result by executing the tanh instruction to perform either a tanh(x) operation or tanh(x)/x operation in the math pipeline;
based on the value range of the input x, generating a scale factor in the FPU pipeline using the minimum instruction;
and
multiplying the intermediate result with the scale factor in the FPU pipeline using the multiply instruction to generate an output of the tanh function for input x.

3 more elements

Dependencies are inferred from the claim text.

Tanh and sigmoid function execution

Life of this patent

Tanh and sigmoid function execution

Life of this patent

Abstract

Claims15