Ptxas fatal : Unresolved extern function '__cudaCDP2EventRecord'

Accelerated Computing CUDA CUDA NVCC Compiler
1

Hi, I’m trying to add some event based timing on my CUDA program. cudaEventRecord() seems not to work and the compilation gives the error message:

ptxas fatal : Unresolved extern function ‘__cudaCDP2EventRecord’

I’m having latest (12.1) cuda on Ubuntu.

Br
Vesa

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2

I also met this problem on CUDA 12.5. cudaEventRecord is not successfully link on __global__ function. Is there any solution to solve this problem?

3

you’ll need to specify -rdc=true or equivalent at compilation and link stages. godbolt example. This is often the case when using the device runtime API.

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