griddepcontrol GPU Virtual ISA NVIDIA

griddepcontrol Parallel Synchronization and Communication Instructions

griddepcontrol.action;

The griddepcontrol instruction allows the dependent grids and prerequisite grids as defined by the runtime, to control execution in the following way:

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 7.8
Minimum Target sm_90

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
griddepcontrol.action; sm_90 The griddepcontrol instruction allows the dependent grids and prerequisite grids as defined by the runtime, to control execution in the following way:. (see the official PTX ISA docs for the full description)

Operands

At a Glance

Data Types -

Related

More in Parallel Synchronization and Communication Instructions

Reference

NVIDIA PTX ISA

Description

The griddepcontrol instruction allows the dependent grids and prerequisite grids as defined by the runtime, to control execution in the following way:.launch_dependents modifier signals that specific dependents the runtime system designated to react to this instruction can be scheduled as soon as all other CTAs in the grid issue the same instruction or have completed. The dependent may launch before the completion of the current grid. There is no guarantee that the dependent will launch before the completion of the current grid. Repeated invocations of this instruction by threads in the current CTA will have no additional side effects past that of the first invocation. (see the official PTX ISA docs for the full description)

Examples

griddepcontrol.launch_dependents;
griddepcontrol.wait;

Reproduced from NVIDIA's official PTX ISA documentation for technical accuracy.

Sources