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UCSD-Wisc-01-Jul-2014.md

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UCSD Wisconsin Meeting 01-July-2014

  • Performance is again highly variable Prism -> CHTC
  • What is the performance to an intermediate point
    • bwctl -T iperf -t 20 -i 1 -fm -c ps.tacc.utexas.edu (from ps-10g-prism.calit2.optiputer.net) [ 14] 0.0-20.0 sec 1585 MBytes 664 Mbits/sec <-- This is not good. I2 WAN performance is still quite bad

Pat/Tom Todo: Find intermediate test points to between San Diego and Wisconsin to figure out where performance fall off is located.

Pat to chat with Eli Dart at ESNet for

Phil was able to also run the job script that Alan put together for a simple data placement job

  • Uses the parallel universe to create a server on node 0, client on node 1
  • nc (netcat) listens on the server
  • condor_chirp is used to put the host and port into a Job Ad and then the client connects to that server:port to send /etc/hosts
  • Small bug in the script kept two different users from running the same job.

Next for Nate/Alan.

  • Regularly run a data placement job between Komatsu(Wisc)/Flashio(UCSD) every hour or two
  • report the results in a comma (or tab) delimited file
  • If possible, simplify the Condor config file to remove duplicates (e.g. multiple defines of the same variable)

No Meeting 7/8 (Phil on Travel) Next meeting 7/15 at regular time.

Followup: on 7/6/2014, Incoming from texas is OK (Trying to rule out problems with UCSD endpoint) [root@ps-10g-prism ~]# bwctl -T iperf -t 20 -i 1 -fm -s ps.tacc.utexas.edu bwctl: Using tool: iperf bwctl: 27 seconds until test results available

RECEIVER START

Server listening on TCP port 5035 Binding to local address 67.58.50.75 TCP window size: 0.06 MByte (default)

[ 15] local 67.58.50.75 port 5035 connected with 129.114.0.189 port 5035 [ ID] Interval Transfer Bandwidth [ 15] 0.0- 1.0 sec 183 MBytes 1537 Mbits/sec [ 15] 1.0- 2.0 sec 723 MBytes 6063 Mbits/sec [ 15] 2.0- 3.0 sec 687 MBytes 5765 Mbits/sec [ 15] 3.0- 4.0 sec 691 MBytes 5795 Mbits/sec [ 15] 4.0- 5.0 sec 759 MBytes 6369 Mbits/sec [ 15] 5.0- 6.0 sec 803 MBytes 6738 Mbits/sec [ 15] 6.0- 7.0 sec 847 MBytes 7107 Mbits/sec [ 15] 7.0- 8.0 sec 892 MBytes 7481 Mbits/sec [ 15] 8.0- 9.0 sec 652 MBytes 5470 Mbits/sec [ 15] 9.0-10.0 sec 555 MBytes 4657 Mbits/sec [ 15] 10.0-11.0 sec 555 MBytes 4659 Mbits/sec [ 15] 11.0-12.0 sec 600 MBytes 5030 Mbits/sec [ 15] 12.0-13.0 sec 564 MBytes 4731 Mbits/sec [ 15] 13.0-14.0 sec 340 MBytes 2855 Mbits/sec [ 15] 14.0-15.0 sec 349 MBytes 2924 Mbits/sec [ 15] 15.0-16.0 sec 371 MBytes 3108 Mbits/sec [ 15] 16.0-17.0 sec 416 MBytes 3494 Mbits/sec [ 15] 17.0-18.0 sec 475 MBytes 3982 Mbits/sec [ 15] 18.0-19.0 sec 564 MBytes 4730 Mbits/sec [ 15] 19.0-20.0 sec 667 MBytes 5592 Mbits/sec [ 15] 0.0-20.1 sec 11736 MBytes 4907 Mbits/sec [ 15] MSS size 8948 bytes (MTU 8988 bytes, unknown interface)

RECEIVER END [root@ps-10g-prism ~]# ping ps.tacc.utexas.edu PING ps.tacc.utexas.edu (129.114.0.189) 56(84) bytes of data. 64 bytes from ps.tacc.utexas.edu (129.114.0.189): icmp_seq=1 ttl=51 time=40.2 ms 64 bytes from ps.tacc.utexas.edu (129.114.0.189): icmp_seq=2 ttl=51 time=40.3 ms 64 bytes from ps.tacc.utexas.edu (129.114.0.189): icmp_seq=3 ttl=51 time=40.1 ms ^C