# ROCm Documentation has moved to docs.amd.com
sysfs-class-kfd-topology-nodes-N-io_links-X¶
What: /sys/class/kfd/topology/nodes/N/io_links/X/type
Date: May 2018
KernelVersion: 4.13
Description: Type of Memory thats been used.
What: /sys/class/kfd/topology/nodes/N/io_links/X/version_major
Date: May 2018
KernelVersion: 4.13
Description: Major version of the Bus interface
What: /sys/class/kfd/topology/nodes/N/io_links/X/version_minor
Date: May 2018
KernelVersion: 4.13
Description: Minor version of the Bus interface
What: /sys/class/kfd/topology/nodes/N/io_links/X/node_from
Date: May 2018
KernelVersion: 4.13
Description: This is refering to the node where it is pointing to begining node
What: /sys/class/kfd/topology/nodes/N/io_links/X/node_to
Date: May 2018
KernelVersion: 4.13
Description: This refers to the Note it is pointing towards end point
What: /sys/class/kfd/topology/nodes/N/io_links/X/weight
Date: May 2018
KernelVersion: 4.13
Description: Thread count for the link, weight factor (derived from CDIT)
What: /sys/class/kfd/topology/nodes/N/io_links/X/min_latency
Date: May 2018
KernelVersion: 4.13
Description: mininum Cost of time to transfer, described in nanoseconds
What: /sys/class/kfd/topology/nodes/N/io_links/X/max_latency
Date: May 2018
KernelVersion: 4.13
Description: Maximum Cost of time to transfer, described in nanoseconds
What: /sys/class/kfd/topology/nodes/N/io_links/X/min_bandwidth
Date: May 2018
KernelVersion: 4.13
Description: Minimum interface Bandwidth in MB/s
What: /sys/class/kfd/topology/nodes/N/io_links/X/max_bandwidth
Date: May 2018
KernelVersion: 4.13
Description: Maximum interface Bandwidth in MB/s
What: /sys/class/kfd/topology/nodes/N/io_links/X/recommended_transfer_size
Date: May 2018
KernelVersion: 4.13
Description: Recommended transfer size to reach maximum interface bandwidth in Bytes
What: /sys/class/kfd/topology/nodes/N/io_links/X/flags
Date: May 2018
KernelVersion: 4.13
Description: Local use flags count used in CPU