[openib-general] A few questions about IBMgtSim

[Sven-Arne Reinemo]

Hi,

After some testing of IBMgtSim I have a few questions:

1) If I try to build topologies using the MTS14400.ibnl as a building
block my simulation fails with a "child process exited abnormally"
message. I guess this is related to ibdmchk since the ibdmchk log
contains lots of errors like the following:

-I- Tracing all CA to CA paths for Credit Loops potential ...
-E- Potential Credit Loop on Path from:H-1/U1/1 to:H-11/U1/1
  Going:Down from:node:0002c9000000007d to:node:0002c9000000006a
  Going:Up from:node:0002c9000000006a to:node:0002c90000000076

-I- Generating non blocking full link coverage plan
into:/tmp/ibdmchk.non_block_
all_links
-E- After 32 stages some switch ports are still not covered:
-E- Fail to cover port:system:0002c90000000054/node:0002c90000000054/P15

I have included two topology files. One that works and one that fails,
the only difference is that the number of hosts are increased from 18 to
20. Also, if I create my own simple ibnl file for a switch with 144 (or
other sizes) ports I am able to run simulations. Any suggestions to what
the problem might be?


2) The included example ibmgtsim/tests/RhinoBased10K.topo never finishes
(at least not in 24 hours). Does this work for anyone else? All other
examples work fine.

3) If I would like to use IBMgtSim with my own (simplified) SM would it
be straightforward? It looks too me like RunSimTest talks to any SM
given the correct path, node and port number for location of the SM.

Best regards,


-- 
Sven-Arne Reinemo
[simula.research laboratory] http://www.simula.no/
++++ GnuPG public key - http://home.simula.no/~svenar/gpg.asc ++++


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