Diagnosing CL_DEVICE_NOT_FOUND and OpenCL Platform Initialization Failures
A technical guide to diagnosing and fixing CL_DEVICE_NOT_FOUND errors in OpenCL, covering ICD loader failures, driver mismatches, and Linux permission issues.
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openclOpenCL Local Memory: When Caching Data in the Work-Group Actually Pays Off
Global memory latency is often the real bottleneck in OpenCL kernels. This post explains the tiling pattern with a worked 1D blur kernel, barrier rules, and the occupancy trade-off that decides whether local memory actually helps.
CPU vs GPU Image Resizing in OpenCV: A Practical Decision Guide
Decide when to use OpenCV’s CPU or GPU resize: compare CPU, CUDA, and OpenCL options, weigh speed vs. portability, and see a ready‑to‑run C++ example with validation checks.