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Possible bug with atomic_cmpxchg?

Ali_R_1
Beginner
184 Views

I wrote an OpenCL code to multiply a row vector into a Compressed Sparse Row matrix. But it gives me a different answer eachtime I run it.

I have built a small repro case based on my matrcies. As one can see, the program breaks at differnet values of j, despite it is expected to print Success. I think the problem is related to atomic_cmpxchg cache flushing, since the loop containing it always run only one time, which is a little stange.

Can any body help me on this please?

Thanks.

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Ali_R_1
Beginner
184 Views

Sorry, I've just found that it is numerical error.

Thanks.

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