[ewg] Questions about CC in OFED

[Heinz, Michael William]

Michael,

PSM is a specific feature of the QLogic (now Intel) line of Infinipath HCAs, to does not work with Mellanox HCAs. The congestion and routing abilities in PSM also require using the QLogic/Intel subnet manager.

From: ewg-bounces at lists.openfabrics.org [mailto:ewg-bounces at lists.openfabrics.org] On Behalf Of Michael Zhang
Sent: Tuesday, June 26, 2012 11:41 PM
To: ewg at lists.openfabrics.org
Subject: [ewg] Questions about CC in OFED

Hi everybody,

  I focus on the source code of  IB congestion control in OFED, such as CCT related data structure and FECN/BECN process. But the only code related to the congestion control mechanism is found in the module of "infinipath-psm". As I know, psm works for MPI applications and actually I haven't installed psm in our system. I have done experiment through IPoIB and the congestion control still works that makes me confused.
  Could someone tell me where is the CC-related source code located besides "infinipath-psm"? Or some functions are realized in hardware such as the movement of CCT Index when receives BECN message?
  Thank you for your help!

Best,
Ziwen

--
Ziwen(Michael) Zhang Ph.D candidate
College of Computer
National University of Defense Technology (NUDT) , P.R.China
Email: ziwen at nudt.edu.cn<mailto:ziwen at nudt.edu.cn> ziwen1203 at gmail.com<mailto:ziwen1203 at gmail.com>
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