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torch.is_deterministic_algorithms_warn_only_enabled

function is_deterministic_algorithms_warn_only_enabled(): boolean

Check if warn-only mode is enabled for non-deterministic operations.

When enabled alongside deterministic mode, operations that violate determinism constraints will log warnings instead of throwing errors. Useful for:

Identifying which operations are non-deterministic
Prototyping with non-deterministic ops before fixing them
Gradual migration to deterministic code

Modes:

warn_only=false (default): Throw error on non-deterministic op → prevents silent incorrectness
warn_only=true: Log warning on non-deterministic op → allows debugging in-place

Requires determinism enabled: Only meaningful if deterministic mode is on
For debugging: Useful to find which ops violate determinism
Not for production: Warnings don't prevent incorrect behavior, only log it
Works with determinism: Must be used with deterministic algorithms enabled

Returns

boolean– true if warn-only mode is enabled, false otherwise (strict error mode)

Examples

// Setup determinism with warnings
torch.use_deterministic_algorithms(true, true);  // warn_only=true

// Check if warnings are enabled
if (torch.is_deterministic_algorithms_warn_only_enabled()) {
  console.log('Non-deterministic ops will warn but continue');
} else {
  console.log('Non-deterministic ops will throw errors');
}

// Debug which operations are non-deterministic
torch.use_deterministic_algorithms(true, true);
const result = torch.someOp(input);  // Will warn if non-deterministic
// Later fix all the warnings...
torch.use_deterministic_algorithms(true, false);  // Switch to strict mode
const result2 = torch.someOp(input);  // Will error if any ops are still non-deterministic

See Also

PyTorch torch.is_deterministic_algorithms_warn_only_enabled()
use_deterministic_algorithms - Enable deterministic mode with warn_only option
are_deterministic_algorithms_enabled - Check if determinism is enabled
get_deterministic_debug_mode - Query debug verbosity level

is_cpu_only_mode

is_floating_point