kebab-microbench-and-dump

name	kebab-microbench-and-dump
description	Execute Kebab microbenchmarks and generate PTX/SASS dumps for kernel-level analysis. Use when asked to run mbench targets, inspect assembly output, compare copy or MMA kernels, or analyze low-level code generation.

Kebab Microbenchmark and Dump

When to Use This Skill

• User requests microbenchmark execution (mbench-*)
• User needs SASS/PTX dumps for kernels
• User wants to compare implementations like native/vectorized/PTX/CuTe copy paths

Prerequisites

• Successful build (make build)
• cuobjdump available in CUDA toolkit

Step-by-Step Workflows

Workflow A: Run Microbenchmark

1. Build:
   • make build
2. Run one microbenchmark:
   • make mbench-copy-gmem-to-smem
   • make mbench-mma-wgmma
   • make mbench-hgemm

Workflow B: Generate Kernel Dumps

1. Build:
   • make build
2. Dump one microbenchmark binary:
   • make mdump-copy-gmem-to-smem
3. Inspect outputs under:
   • dump/microbench/<microbench_name>/

Workflow C: Operator Dumps

• make dump-gemm-cute
• make dump-gemm-cuda
• make dump-gemm-ref

Outputs are under dump/operator/.

Troubleshooting

Issue	Mitigation
cuobjdump not found	Ensure CUDA toolkit bin directory is available and retry
No PTX generated	Some binaries may not embed PTX; SASS output is still usable
Dump files too large	Focus on split kernel files instead of all_kernels.*

References

• Makefile (mbench-*, mdump-*, dump-*-cute/cuda/ref)
• kebab/lib/microbench/CMakeLists.txt
• dump/