tao-train-dino
DINO (DETR with Improved DeNoising Anchor Boxes) for 2D object detection. Transformer-based detector with denoising training, multi-scale features, and optional distillation support. Use when training, evaluating, exporting, distilling, quantizing, or running inference for a TAO DINO detector. Trigg
By nvidia · 1,552 installs
npx skills add nvidia/skills --skill tao-train-dino
Source repository · Upstream listing
DINO
Standalone install? If this session was not initialized by the TAO skill bank plugin, run the tao setup skill first (host preflight, credentials, cross skill discovery).
DINO (DETR with Improved DeNoising Anchor Boxes) for 2D object detection. Transformer based detector with denoising training, multi scale features, and optional distillation support.
Uses pretrained backbone weights (e.g. ResNet 50 ImageNet). Set model.pretrained backbone path for backbone only or train.pretrained model path for full model.
When To Use
Train, evaluate, export, distill, quantize, or run inference for a TAO DINO 2D object detector.
For TAO Deploy TensorRT actions ( gen trt engine , TensorRT evaluate , and
TensorRT inference ), read references/tao deploy dino.md first. Deploy spec templates live
in this skill's references/ folder with the spec template deploy .yaml
prefix.
Reference Map
references/dino data specs.md — dataset contracts, per action dataset requirements, per action spec override examples (train, evaluate, export, deploy/gen trt engine, inference, quantize, distill), data source arrays, checkpoint inference, and dataset layout.
references/dino actions errors.md — important parameters, default values, evaluate/export defaults, hardware, and the full error pattern catalog.
references/dino tuning multigpu.md — full AutoML/HPO notes (metrics, hyperparameters, extractor) and multi GPU spec consistency.
references/dino automl sdk.md — AutoML metrics, SDK orchestration internals, data source gap, and spec param/parent model inference.
references/tao deploy dino.md — TensorRT deploy workflow.
references/detailed guide.md — map to the detailed model guide.
Dataclass Schemas
Generated TAO Core schemas are packaged in schemas/<action .schema.json , with schemas/manifest.json listing available actions. Each generated schema also emits references/spec template <action .yaml from the schema top level default field. AutoML enablement is declared at the model layer in references/skill info.yaml via automl enabled . Runnable AutoML still requires schemas/train.schema.json and references/spec template train.yaml to exist and parse. Use the packaged train schema for automl default parameters , automl disabled parameters , defaults, min/max bounds, enums, option weights, math conditions, dependencies, and popular parameters. Do not expect ~/tao core at runtime; maintainers regenerate schemas/templates before packaging the skill bank.
Train Action Policy
This model is AutoML enabled at the model layer. Before handling any train stage request, read references/skill info.yaml and resolve the run override from either an explicit automl policy value or the user's workflow request. Use automl policy: on by default and only expose on / off in new launch prompts. Treat phrases like "turn off AutoML", "disable AutoML", "no HPO", or "plain training" as automl policy: off for this run only. When automl policy: on , automl enabled: true , and both schemas/train.schema.json and references/spec template train.yaml are packaged, route the train action through tao skill bank:tao run automl by default with this model's skill dir . Preserve workflow/application overrides for datasets, specs, output directories, GPU/platform settings, parent checkpoints, and automl policy . Use direct model training only when automl policy: off or the packaged train schema/template is missing; in the missing schema case, report that AutoML is enabled but not runnable for this model until schemas are generated.
Non train actions such as evaluate , inference , export , and deploy flows stay in this model skill. The per run automl policy override does not change model metadata.
Training Requirements
The agent MUST read this section before generating any training or AutoML script for DINO.
Dataset type: object detection
Formats: coco, coco raw
Accepted dataset intents: training, evaluation, testing, calibration
Monitoring metric: mAP50 for quick operational checks; val mAP for
COCO/paper style benchmark comparisons.
Required datasets — MUST resolve both:
Dataset Required Why
Train dataset URI Yes Training data (COCO format)
Validation dataset URI Yes — ALWAYS DINO unconditionally builds a val dataloader. Omitting val data sources causes FileNotFoundError at startup regardless of the metric or workflow. If the user has no separate eval split, reuse the train URI.
Required inputs before generating any training spec:
1. Train dataset URI — S3 path to COCO format training data
2. Validation dataset URI — S3 path to COCO format val data (can be same as train)
3. num classes — How many object classes? Default 91 (COCO). Must be = max(category id) + 1 . Too low causes CUDA error: device side assert triggered .
Resolve these from the user request or the default profile below. Prompt only
for values that are still missing after applying the profile rules.
Bankable local default profile for DINO AutoML smoke runs:
Use this profile only when the user asks to run DINO AutoML and does not provide
dataset or class count inputs. This profile is intentionally small and local to
this skill bank; it is for smoke/iteration runs, not a production benchmark.
Do not search previous runners, logs, session state, shell history, or the home
directory to recover these values.
If the user supplies any dataset URI or class count value, prefer the user value
and ask for any remaining required DINO value. Do not partially mix a user's
custom dataset with this profile's class count unless the user confirms it.
Do not prompt for image layout for the standard DINO dataset. The standard
TAO DINO dataset artifact is images.tar.gz plus annotations.json . Use
images.tar.gz in the remote image dir spec override. The SDK downloads the
archive and rewrites the runtime spec to the extracted folder named after the
archive stem ( images.tar.gz images ). Only deviate if the user explicitly
provides a different image artifact name.
Core Workflow
DINO supports train, evaluate, export, distill, quantize, and inference. Data source
overrides are mandatory for every action — DINO's config.json has empty
data sources because the runner cannot auto resolve array of objects spec keys.
The agent MUST construct data source paths and include them in spec overrides .
See references/dino data specs.md for the per action dataset requirements table,
the standard dataset artifact ( images.tar.gz + annotations.json ) and runtime
folder rewrite rules, and the complete per action spec overrides examples for
train, evaluate, export, deploy/gen trt engine, inference, quantize, and distill —
including checkpoint inference via parent model , the results dir/train/
checkpoint location, and the distillation FAN teacher / student rules.
Important Parameters And Defaults
Key defaults: num epochs=10 , batch size=4 , learning rate=2e 4 ,
lr backbone=2e 5 , num classes=91 , backbone=resnet 50 .
dataset.num classes : Default 91 (COCO). Must be = max(category id) + 1 . Too low causes CUDA error: device side assert triggered . Set as <num classes + 1 in spec overrides.
num epochs : default 10 (quick iteration); real datasets typically need 30 50+ epochs for good mAP.
See references/dino actions errors.md for the full parameter list (backbone
options, train.optim.lr / lr steps , model.num queries , batch size ),
default values, evaluate defaults, export defaults (input 960x544, opset 17,
TRT data types, workspace 1024 MB), and hardware requirements.
Multi GPU And AutoML / HPO
When increasing train.num gpus , also set train.gpu ids to the same visible
device range, or distributed startup can be inconsistent.
AutoML runs training — all Training Requirements above apply. For no input
local smoke runs, use DINO AUTOML PROFILE . Recommended metric is mAP50
( val mAP for benchmark comparisons) with direction="maximize" and a custom
metric extractor .
See references/dino tuning multigpu.md for the full multi GPU spec consistency
rule (8 GPU example, NCCL timeout note) and the full AutoML/HPO notes (metric
selection, metric extractor , recommended hyperparameters, weight decay
behavior, dense dataset resume guidance). See references/dino automl sdk.md for
AutoML metric extractor code, SDK orchestration internals, and parent model
inference mappings.
Error Patterns
Common failures include CUDA OOM (reduce batch size ), missing val data sources
( FileNotFoundError at startup — always supply val), num classes too low ( CUDA
device side assert ), and the parent dino gen trt engine / dino convert PyT CLI
restrictions.
See references/dino actions errors.md for the complete error pattern catalog
with diagnostics and fixes.
Spec Param / Parent Model Inference
Model specific inference mappings belong in this MD file, not in config.json .
Generated runners read the mappings and apply them with SDK helpers before
create job() . For parent model / parent model folder , pass the upstream
train/export/AutoML child job id as parent job id ; the SDK lists the parent
result folder, filters checkpoint artifacts, and returns the selected model.
See references/dino automl sdk.md for the full inference mapping table (per
action: parent model , key , output dir , ptm if no resume model ,
resume model , create onnx file ) and the TensorRT mapping note. TensorRT
mappings live in the deploy workflow, not the PyT model skill.
Optional: running via the TAO SDK
When running DINO through the TAO SDK ( script runner orchestration, S3 I/O
wrapping, AutoML), skills read references/skill info.yaml for input and
spec param mappings. See references/dino automl sdk.md for SDK orchestration
internals, including the data sources gap and the [0] indexed inputs
declarations. Skip this when running locally with docker run .
Deployment
[tao deploy dino](references/tao deploy dino.md)