What's the meaning of error code "NPP_STREAM_CTX_ERROR"

Accelerated Computing GPU-Accelerated Libraries
1

I update my CUDA SDK from version 11.6 to 12.9, I found some NPPI functions call return NPP_STREAM_CTX_ERROR(for example,nppiResize_8u_C3R(), nppiNV12ToBGR_8u_P2C3R()), after I replace these functions to _Ctx-suffix versions with empty NppStreamContext parameter,the errors disappeared.

So what is the meaning “NPP_STREAM_CTX_ERROR” error code? Does this mean I can only use _Ctx-suffixed functions from now on?

2

Advance warning of deprecation of NPP non-stream-context managed applications was given at least as early as CUDA 10.1.

Notice of the deprecation was given in CUDA 12.0

According to the 12.9 release notes, support is dropped in CUDA 13.0

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3

So if there is no application defined cuda stream in my program, can I set the NppStreamContext to empty? can I write the code like below:

NppStreamContext ctx = {}; // set NppStreamContext to empty
nppiCopy_8u_C3R_Ctx(srcPtr,srcPitch,dstPtr,dstPitch,{w,h},ctx);