IOAF code 3 when using threadgroup_barrier

Question

When I add threadgroup_barrier to my shader, it generates a memory error. Why is that?

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Posted by

aledalgrande

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Answer 1

Are you aware of this admonition in the docs?

"The threadgroup_barrier function must be encountered by all threads in a threadgroup executing the kernel."

Posted by

KMT

Answer 2

PS: I run it like this:

threadgroup_barrier(mem_flags::mem_threadgroup);

and there is just one threadgroup memory operation before the call. It is in the main body of the kernel, no conditional or loop around it.

Posted by

aledalgrande

Answer 3

Are you aware of this admonition in the docs?

"The threadgroup_barrier function must be encountered by all threads in a threadgroup executing the kernel."

Posted by

KMT

Accepted Reply