NVIDIA MLNX_OFED Documentation v24.04-0.6.6.0
NVIDIA MLNX_OFED Documentation v24.04-0.6.6.0

Out-of-Order (OOO) Data Placement

Note

This feature is only supported on:

  • ConnectX-5 adapter cards and above

  • RC and XRC QPs

  • DC transport

In certain fabric configurations, InfiniBand packets for a given QP may take up different paths in a network from source to destination. This results into packets being received in an out-of-order manner. These packets can now be handled instead of being dropped, in order to avoid retransmission, by:

  • Achieving better network utilization

  • Decreasing latency

Data will be placed into host memory in an out-of-order manner when out-of-order messages are received.

For information on how to set up out-of-order processing by the QP, please refer to HowTo Configure Adaptive Routing and SHIELD Community post.

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