SystemError in cudaOverlay Function (Python): More Keyword List Entries than Format Specifiers

[yunlongwangsd]

Description

I encountered an issue when I ran through Jetson Inference tutorials using the Python code examples. In all inference tasks using cudaOverlay function from the jetson_utils library, there is an error message indicated "More keyword list entries (5) than format specifiers (4)".

Diagnosis

The issue does not exist while running C++ code examples of the same tasks, indicating that the problem may be with the python binding of those Jetson util functions.

Fix

In utils/python/bindings/PyCUDA.cpp, the original arguments parsing code in PyCUDA_Overlay function was:

if( !PyArg_ParseTupleAndKeywords(args, kwds, "OO|ff", kwlist, &pyInput, &pyOutput, &x, &y, &stream))
    return NULL;

I modified it to:

if( !PyArg_ParseTupleAndKeywords(args, kwds, "OO|ffK", kwlist, &pyInput, &pyOutput, &x, &y, &stream))
    return NULL;

It adds the fifth optional argument to match the signature. Make sure to rebuild before applying the change.

I hope this information is helpful. Thank you!

[dusty-nv]

Ah thanks @yunlongwangsd, I had been adding support for cudaStreams to jetson-utils earlier this week and missed this - patched it in 6f26ba5 👍