message: add more helpful things to README
diff: @@ -238,13 +238,6 @@ kubectl logs -f <name of pod>
  ```
  -
  -TODO:
  - - building and deploying new containers
  - - updating the cluster workers.
  - - digging through the games.
  -
  -
  Preflight checks for a training run.
  ====================================
  @@ -293,25 +286,55 @@ Setting up the selfplay cluster
  Useful things for the selfplay cluster
  --------------------------------------
  +* Getting a list of the selfplay games ordered by most recent start
  + ```
  + kubectl get po --sort-by=.status.startTime
  + ```
  +
  +* Attaching to a running pod (to check e.g. cpu utilization, what actual code is
  + in your container, etc)
  + ```
  + kubectlc exec -it <pod id> /bin/bash
  + ```
  +
  +* Monitoring how long it's taking the daemonset to install the nvidia driver on
  + your nodes
  + ```
  + kubectl get no -w -o yaml | grep -E 'hostname:|nvidia-gpu'
  + ```
  +
  +
  Setting up logging via stackdriver, plus metrics, bla bla.
  -If you've run rsync and collected a set of SGF files, here are some handy
  +
  +If you've run rsync to collect a set of SGF files (cheatsheet: `python
  +rl_loop.py smart-rsync --source-dir="gs://$BUCKET_NAME/sgf/" --from-model-num 0
  +--game-dir=sgf/`), here are some handy
  bashisms to run on them:
  * Find the proportion of games won by one color:
  ```
  grep "B+" **/*.sgf | wc -l
  ```
  + or e.g. "B+R", etc to search for how many by resign etc.
  +
  * A histogram of game lengths (uses the 'ministat' package)
  ```
  find . -name "*.sgf" -exec /bin/sh -c 'tr -cd \; < {} | wc -c' \; | ministats
  ```
  -etc...
  +* Get output of the most frequent first moves
  + ```
  + grep -oh '^;B\[[a-s]*\]' **/*.sgf | sort | uniq -c | sort -n
  + ```
  +* Distribution of game-winning margin (ministat, again):
  + ```
  + find . -name "*.sgf" -exec /bin/sh -c 'grep -o "W+[[:digit:]]*" < {} | cut -c3-'
  + \; | ministat
  + ```
  -Setting up the training job
  ----------------------------
  -TBD
  +etc...
  +
  