Builtins

Builtins are ordinary modules with no special status. They are named by their full dotted path. There is no alias table, so "adamw" does not resolve and "gatle_ignite.optimizers.adamw" does. Swapping a builtin for your own is changing this string.

One exception

cfg.logger_name does accept short names: see the table at the bottom of this page, and Logging.

gatle_ignite.optimizers

Each module exposes get_optimizer.

Dotted path	What it is	Params
gatle_ignite.optimizers.adam	Adam. No weight-decay grouping: use adamw if you want decay.	lr=0.001, betas=(0.9, 0.999), eps=1e-08, weight_decay=0.0, **kwargs
gatle_ignite.optimizers.adamw	AdamW, with bias and norm params excluded from weight decay.	lr=0.001, weight_decay=0.01, betas=(0.9, 0.999), eps=1e-08, no_decay_on_bias_and_norm=True, **kwargs
gatle_ignite.optimizers.layer_decay	Layer-wise LR decay (BEiT/ViT-style), for fine-tuning a pretrained backbone.	lr=0.0001, layer_decay=0.75, weight_decay=0.05, backbone_attr='', blocks_attr='blocks', betas=(0.9, 0.999), **kwargs
gatle_ignite.optimizers.sgd	SGD with momentum, Nesterov by default.	lr=0.1, momentum=0.9, weight_decay=0.0, nesterov=True, no_decay_on_bias_and_norm=True, **kwargs

gatle_ignite.schedulers

Each module exposes get_scheduler.

Dotted path	What it is	Params
gatle_ignite.schedulers.cosine	Cosine anneal the LR every iteration over the whole run.	engines, start_value=None, end_value=0.0, cycle_epochs=None, **kwargs
gatle_ignite.schedulers.plateau	Drop the LR when a validation metric stops improving.	engines, metric_name=None, mode='min', factor=0.1, patience=10, **kwargs
gatle_ignite.schedulers.step	Multiply the LR by gamma every step_size epochs.	engines, step_size=10, gamma=0.1, **kwargs
gatle_ignite.schedulers.warmup_cosine	Linear warmup, then cosine anneal to lr * lr_scale_factor.	engines, warmup_epochs=1, warmup_start_factor=0.01, lr_scale_factor=0.01, **kwargs

gatle_ignite.callbacks.backends

Each module exposes Backend.

Dotted path	What it is	Params
gatle_ignite.callbacks.backends.discord	Discord webhook backend.
gatle_ignite.callbacks.backends.text	Print metrics to stdout. The default.
gatle_ignite.callbacks.backends.wandb	Weights & Biases backend.

cfg.logger_name

The one field that takes short names. It is a list of enabled sinks, not a component path, which is why it reads differently from everything above.

Name	Resolves to
"text"	gatle_ignite.callbacks.backends.text
"wandb"	gatle_ignite.callbacks.backends.wandb
"discord"	gatle_ignite.callbacks.backends.discord
"pbar"	not a backend: a flag handled by the trainer

Any name containing a dot is treated as a dotted path to your own module exposing Backend(cfg).