perfSONAR User Q&A and Other Discussion

["Roderick Mooi" <>]

Hi Pol

I had a similar problem recently. Look for this thread in the mailing list: 
"bwping question - Unable to open control connection". It may help.

I haven't gotten to testing the new version of bwctl Aaron proposed but if 
you do please let us know how it works.

Regards,

Roderick

>>> On 2014-07-24 at 21:55, Pol Llovet 
>>> <>
>>>  wrote:
> Hello!
> 
> I recently attended the PS tutorial at XSEDE and we have been charging
> ahead with it here at MSU.  We now have 2 servers (soon to be 3) that are
> testing bandwidth from the edge, behind the firewall, and deep in the
> network.  We don't have any owamp nodes yet, but this leads me to my
> question:
> 
> The reason that we would need those owamp nodes is because we were told
> that the scheduler for owamp tests and bwctl tests don't communicate so you
> run the risk of the tests happening on top of one another and getting bad
> data. However, it seems like there are terminal versions of the tests that
> can be run safely (bwping, bwtraceroute).  Am I correct in that assumption?
> 
> I have tried running bwping with -T owamp, but I have been unable to have a
> successful test.  For example:
> 
> [root@status
>  pol]# bwping -T owamp -c owamp.seat.net.internet2.edu
> bwping: Unable to connect to owamp.seat.net.internet2.edu
> 
> This test does seem to get scheduled if I use ps.tacc.xsede.org as the
> target, but I get the following result:
> 
> SENDER START
> owping: FILE=owping.c, LINE=1603, Unable to open control connection to
> [129.114.0.189]:5774.
> bwctl: local tool exited before expected with status=1
> 
> When I go to http://ps.tacc.xsede.org/toolkit/ it looks like owamp is on
> port 861, but that errors out entirely when I try to use the same command
> with ps.tacc.xsede.org:861.
> 
> So, can we use bwping with owamp? Or is this just a placeholder for later
> functionality?
> 
> thanks in advance,
> 
> pol
> 
> Pol M. Llovet
> Research Computing / Middleware
> Montana State University
> w: 406-994-3416
> c: 406-646-6747
> 
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This message is subject to the CSIR's copyright terms and conditions, e-mail 
legal notice, and implemented Open Document Format (ODF) standard. 
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Please consider the environment before printing this email.