---
name: "mem_fence"
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/mem_fence"
---

# mem\_fence(3clc)

Orders loads and stores of a work-item executing a kernel.

## NAME

mem\_fence - Orders loads and stores of a work-item executing a kernel.

##

**void mem\_fence(cl\_mem\_fence\_flags** *flags***);**

## DESCRIPTION

Orders loads and stores of a work-item executing a kernel. This means that loads and stores preceding the **mem\_fence** will be committed to memory before any loads and stores following the **mem\_fence**.

The *flags* argument specifies the memory address space and can be set to a combination of the following literal values: **CLK\_LOCAL\_MEM\_FENCE**, **CLK\_GLOBAL\_MEM\_FENCE**.

## SPECIFICATION

**OpenCL Specification**\[1\]

## SEE ALSO

[**explicitMemoryFenceFunctions**(3clc)](/explicitMemoryFenceFunctions/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 275, section 6.12.9 - Explicit Memory Fence Functions