---
name: "clFinish"
section: "3clc"
platform: "linux"
package: "opencl-1.2-man-doc"
version: "1.0~svn33624-5.1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/clFinish"
---

# clFinish(3clc)

Blocks until all previously queued OpenCL commands in a command-queue are issued to the associated device and have completed.

## NAME

clFinish - Blocks until all previously queued OpenCL commands in a command-queue are issued to the associated device and have completed.

##

**cl\_int clFinish(cl\_command\_queue** *command\_queue***);**

## NOTES

Blocks until all previously queued OpenCL commands in *command\_queue* are issued to the associated device and have completed.

**clFinish** does not return until all previously queued commands in *command\_queue* have been processed and completed. **clFinish** is also a synchronization point.

## ERRORS

Returns CL\_SUCCESS if the function call was executed successfully. Otherwise, it returns one of the following:

• CL\_INVALID\_COMMAND\_QUEUE if *command\_queue* is not a valid command-queue.

• CL\_OUT\_OF\_HOST\_MEMORY if there is a failure to allocate resources required by the OpenCL implementation on the host.

• CL\_OUT\_OF\_RESOURCES if there is a failure to allocate resources required by the OpenCL implementation on the device.

## SPECIFICATION

**OpenCL Specification**\[1\]

## SEE ALSO

[**clFlush**(3clc)](/clFlush/3clc.md)

## AUTHORS

**The Khronos Group**

## COPYRIGHT

Copyright © 2007-2011 The Khronos Group Inc.\
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or associated documentation files (the "Materials"), to deal in the Materials without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to the condition that this copyright notice and permission notice shall be included in all copies or substantial portions of the Materials.

## NOTES

- 1\.

  OpenCL Specification

  page 193, section 5.13 - Flush and Finish