set GPU Virtual ISA NVIDIA

Set (Compare and Produce Value) Comparison & Selection

set.CmpOp.dtype.stype d, a, b;

Compare two operands and write a numeric (not predicate) 0/1 or all-ones/all-zeros result.

Encoding

PTX is a virtual instruction set. It has no single, stable native binary encoding — the compiler lowers this instruction to different native machine code depending on the selected NVIDIA target architecture (compute capability). This page intentionally shows no bit-diagram; see the target/version requirements below for what governs how this instruction compiles.
PTX ISA Version Introduced PTX ISA 1.0
Minimum Target sm_10

Syntax Forms

One mnemonic covers many type / state-space / scope / modifier combinations — each row below is an independently valid form.

Syntax Data Types State Space(s) Modifiers Min. Target Description
set.CmpOp.dtype.stype d, a, b; u32, s32, f32 sm_10 Comparison producing a value, useful when the result feeds arithmetic rather than a guarded branch.

Operands

  • d
    Destination register
  • a
    First operand
  • b
    Second operand

At a Glance

Data Types f32, s32, u32

Reference

NVIDIA PTX ISA

Semantics

d = CmpOp(a, b) ? (all-ones or 1) : 0, encoding depends on dtype.

Sources