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18. gc-reset

This tool resets the IPU devices. For example:

gc-reset -d {device_id}

Where {device_id} is the id number returned by the gc-info tool. This can refer to one IPU or a group of IPUs.

18.1. Usage

18.1.1. Allowed options

`-t, --teardown-links`	Teardown IPU links
`-m, --reset-memory`	Reset tile memory and registers (for debugging)
`-d {id}, --device-id {id}`	Device id
`-h, --help`	Produce help message
`--version`	Version number

18.1.2. Examples

gc-reset           # reset all IPUs
gc-reset -d 0      # reset a single IPU
gc-reset -d 30 -t  # tear down a link
gc-reset -d 0 -m   # reinitialize memory and registers

18.1.3. Notes

When tearing down links, device ID is the MultiIPU group you want to untrain the links for. Typically you would want to use the biggest MultiIPU group.

Links cannot be torn down on IPUoF partitions; using the -t option on these platforms will have no effect.