mem_fence(3) Orders loads and stores of a work-item executing a kernel.

void mem_fence(cl_mem_fence_flags flags);


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.


m[blue]OpenCL Specificationm[][1]


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OpenCL Specification
page 275, section 6.12.9 - Explicit Memory Fence Functions