Initial project scaffold

tasks/07_profiling/profile_examples.md

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+# Profiling Examples
+
+## Nsight Compute
+
+```bash
+./tools/profile_ncu.sh python bench/bench_vector_add.py --device cuda --mode triton
+./tools/profile_ncu.sh python bench/bench_softmax.py --device cuda --mode torch
+```
+
+## Nsight Systems
+
+```bash
+./tools/profile_nsys.sh python bench/bench_matmul.py --device cuda --mode triton
+./tools/profile_nsys.sh python bench/bench_attention.py --device cuda --mode torch
+```
+
+## First Things To Inspect
+
+- median runtime from the benchmark harness
+- whether warmup was excluded
+- whether kernels overlap or serialize
+- whether memory throughput is near a practical ceiling
+- whether a kernel launch is tiny enough that launch overhead matters