# tt_architecture_info

[<< Home](../index.md) | [<< Metrics](../metrics.md)

## Name

### Prometheus Metric Name

```
tt_architecture_info
```

### Metric Path (tt-telemetry)

Schema:

```
{hostname}/tt_architecture_info
```

Example path:

```
bh-glx-c09u02/tt_architecture_info
```

## Description

The host's Tenstorrent ASIC architecture. It is derived from PCI device enumeration (the PCI `device_id` maps to an architecture), which requires neither an initialized UMD driver nor an open device — so the metric is available even when device telemetry is disabled or the driver is down. This is a host-level metric whose value is set once at startup and does not change. In Prometheus, the architecture string is exposed as the `architecture` label with a constant gauge value of 1.

## Values

**Type:** String

**Units:** None

**Allowable values:**
`wormhole_b0`, `blackhole`, or `unknown` (no Tenstorrent PCI devices found, or an unrecognized architecture). The value is exposed via the `architecture` Prometheus label.

## Prometheus Labels

|Label Name|Value|
|---|---|
|hostname|The host from which the metric was collected.|
|hall|The datacenter hall where the host is located. Sourced from the Factory System Descriptor (FSD).|
|aisle|The datacenter aisle where the host is located. Sourced from the Factory System Descriptor (FSD).|
|rack|The rack number where the host is located. Sourced from the Factory System Descriptor (FSD).|
|shelf_u|The shelf U position in the rack where the host is located. Sourced from the Factory System Descriptor (FSD).|
|architecture|The ASIC architecture string.|