Debugging CUDA Applications
Learn techniques and tools for debugging CUDA applications.
Common Debug Techniques
- Error checking with cudaGetLastError()
- Printf debugging in kernels
- Using CUDA-GDB for step-by-step debugging
- Memory checking with cuda-memcheck
- Nsight debugging tools
Debugging Example
Here's an example showing various debugging techniques:
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Common Issues and Solutions
Memory Access Violations
Always check array bounds and ensure proper memory allocation.
Race Conditions
Use proper synchronization and atomic operations.
Kernel Launch Failures
Verify launch parameters and resource usage.
Incorrect Results
Add verification steps and debug prints.