CODEWITHSUNDEEP
openclopencl-c
Harsh Wardhan
Harsh Wardhan

Reputation: 2148

Do preprocessor directives affect OpenCL kernel performance?

If I use preprocessor directives like #if, #elif, etc., in my kernel , will it affect the performance in any way? I'm assuming that these conditions are resolved at the compile time itself.

Upvotes: 1

Views: 124

Answers (1)

Jovasa
Jovasa

Reputation: 445

If you do live compilation then it will probably have some effect on the compiletime but the on the actual execution of the kernel it won't have any affect since they are resolved at the compile time just as you said. The potential slowdown on compiletime should be way less than doing all those checks at run time.

Upvotes: 2

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