Does OpenCL allow concurrent writes to same memory address?

Posted by Wonko on Stack Overflow See other posts from Stack Overflow or by Wonko
Published on 2010-05-18T21:50:59Z Indexed on 2010/05/21 10:40 UTC
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concurrency

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shared-memory

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opencl

Is two (or more) different threads allowed to write to the same memory location in global space in OpenCL? The write is always changing a uchar from 0 to 1 so the outcome should be predictable, but I'm getting erratic results in my program, so I'm wondering if the reason can be that some of the writes fail.

Could it help to declare the buffer write-only and copy it to a read-only buffer afterwards?

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