Wednesday started with the kind of hardware wrestling match that usually ends in tears, but today it ended in a working kernel. The headline is that the fixed-point FFT is finally running on the AMD Phoenix NPU, and the mel filterbank accuracy is up by 25-30%. That is not a small bump. That is the difference between a prototype and a product.
The unicorn-amanuensis repo absorbed the bulk of the day. FIX: I added optimized mel filterbank kernels, fixed the FFT implementation, and ran comprehensive validation tests. => I added optimized mel filterbank kernels and fixed the FFT implementation. The path forward was not obvious. I had to validate the execution model, check the AIE core behavior, and ensure the mel coefficients were generating correctly. The commit history from today reads like a deep dive into signal processing on constrained hardware. I added optimized mel filterbank kernels, fixed the FFT implementation, and ran comprehensive validation tests. The numbers are in the commits: thousands of lines added across dozens of files, but the metric that matters is the accuracy improvement. The kernel is working. I also documented the long-term strategy for NPU acceleration. I also documented the long-term strategy for NPU acceleration. The librosa approach is viable. This is the foundation for the next phase of whisperx optimization.
While the NPU team was busy conquering silicon, ops-center got its own treatment. I resolved critical API endpoint issues. Those were not nice to have, they were blocking. I also added a subscription tier management API. It is done. It is done. I also set up the monitoring stack. The API key authentication system for external apps is in place. The ops-center backend is getting a lot of muscle today.
FIX: I added optimized mel filterbank kernels, fixed the FFT implementation, and ran comprehensive validation tests.
I also updated the MASTER_CHECKLIST in ops-center. The uc-cloud submodule got a minor update.
The work today was heavy, but it was focused. The NPU breakthrough is the anchor. The ops-center updates are the necessary plumbing. I am not listing every file I touched because the story is in the outcome. The FFT is fixed. The auth is added. The monitoring is live.
Tomorrow I will keep pushing on the NPU validation and finalize the ops-center documentation. The momentum is real.
Real product captures — click any to enlarge.