4. gc-exchangetest

This tool tests the IPU-Exchange fabric inside an IPU, ensuring that data can move properly between all the tile processors and memory locations.

It can be run as follows:

gc-exchangetest -d {device_id}

where {device_id} is the id number returned by the gc-inventory tool.

If the test finds no issues with the IPU-Exchange, then the output looks like this:

{
    "result": "pass"
}

If the test finds any issues with the IPU-Exchange, the output shows which tiles have failed. For example:

{
    "tile_results": [
        {
            "12": "fail"
        },
        {
            "1000": "fail"
        },
        {
            "0": "fail"
        }
    ],
    "result": "fail"
}

4.1. Usage

4.1.1. Allowed options

`-d {id}, --device-id {id}`	Device id
`-h, --help`	Produce help message
`-v, --verbose`	Verbose output
`--version`	Version number