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Altera_Forum
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9 years ago

How can I use local memory.

I read Optimizing Local Memory Accesses of Altera SDK for OpenCL Best Prasctices Guides. and I can see that I can use local memory used by clSetKernelArg. so I write my source as below ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Hi there,

You are not using clSetKernelArg correctly as the proper way to set a pointer to local memory is:

status = clSetKernelArg(kernel, argi++, sizeof(<type>)*<size_of_array>, null);

so for example, if you want to set an array of chars of size 256, you would have to write:

status = clsetkernelarg(kernel, argi++, sizeof(char)*256, NULL);

That's all. Good luck!