# tt_dram_trained

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## Name

### Prometheus Metric Name

```
tt_dram_trained
```

### Metric Path (tt-telemetry)

Schema:

```
{hostname}/tray{tray}/chip{chip}/dram/module{module}/tt_dram_trained
```

Example path:

```
bh-glx-c09u02/tray1/chip2/dram/module0/tt_dram_trained
```

## Description

Whether DRAM training succeeded for a specific DRAM module. DRAM training is a calibration process that occurs during device initialization to establish reliable communication between the ASIC and DRAM. This metric is always available on all devices.

## Values

**Type:** Boolean

**Units:** None

**Allowable values:**
- **True (1)**: DRAM training succeeded and the module is operating normally.
- **False (0)**: DRAM training failed. The module may not be functional.

## 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).|
|tray|The tray (UBB) that the device is located on.|
|chip|The ASIC location within the tray.|
|module|The DRAM/GDDR module index on the chip.|