exo-explore/exo · error · HTTPException

Instance not found

Error message

Instance not found

What it means

Error "Instance not found" thrown in exo-explore/exo.

Source

Thrown at src/exo/api/main.py:636

                        instance=instance,
                        memory_delta_by_node=memory_delta_by_node or None,
                        error=None,
                    )
                )
            seen.add(
                (
                    model_card.model_id,
                    sharding,
                    instance_meta,
                    len(placement_node_ids),
                )
            )

        return PlacementPreviewResponse(previews=previews)

    def get_instance(self, instance_id: InstanceId) -> Instance:
        if instance_id not in self.state.instances:
            raise HTTPException(status_code=404, detail="Instance not found")
        return self.state.instances[instance_id]

    async def await_instance(
        self,
        model_id: ModelId,
        timeout_seconds: float = Query(default=0.0, ge=0.0, le=300.0),
    ) -> StreamingResponse:
        _sleep = 0.1

        async def _stream() -> AsyncGenerator[str, None]:
            deadline = (
                None if timeout_seconds == 0 else anyio.current_time() + timeout_seconds
            )

            while True:
                for instance in self.state.instances.values():
                    if instance.shard_assignments.model_id == model_id:
                        payload = AwaitInstanceReadyMessage(instance=instance)

View on GitHub (pinned to 21a54c5ea0)

When it happens

Trigger: Thrown at src/exo/api/main.py:636 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of exo-explore/exo@21a54c5ea0 (2026-08-26). Data as JSON: /api/errors/f28ca010cef796af. Report an issue: GitHub.