/device-hardware/special-function-unit
What is a Special Function Unit?
SFU
The Special Function Units (SFUs) in Streaming Multiprocessors (SMs) accelerate certain arithmetic operations.
Notable for neural network workloads are transcendental mathematical operations,
like exp, sin, and cos.
The
Streaming Assembler (SASS)
instructions associated with the SFUs generally begin with MUFU: MUFU.SQRT,
MUFU.EX2. See this Godbolt link for sample
assembly using the MUFU.EX2 instruction to implement the expf intrinsic in
CUDA C++ .
Core
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