UDP application over Infiniband does not receive UDP packets

Solution In Progress - Updated -

Issue

  • Blade 2 and 3 have a Matrix application communicating using UDP. Blade 2 sends a UDP message, blade 3 receives the UDP message as it is logged. Blade 3 application responds but blade 2 application does not recv the message. The Matrix application fences the blade.

Environment

  • Red Enterprise Real Time MRG
    • 3.8.13-rt27.34.el6rt.x86_64
  • Matrix application
  • Infiniband
  • HP Blade

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