User Opt-in Experiences in GENI Experiments:
PhysicalTherapy-as-a-Service & Simulation-as-a-Service
Prasad Calyam, Ph.D.
Assistant Professor, Department of Computer Science
GEC22, March 2015
PhysicalTherapy-as-a-Service
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Is Google Fiber useful for something
other than
?
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PhysicalTherapy-as-a-Service
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Synchronous Big Data Problem
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Troubleshooting Google Fiber!
When everything works with static IP
The 40 Mbps mystery!!…
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Case of a Google Fiber Home in Kansas City
40 Mbps performance on a 1 Gbps access network connection!!…
Google Fiber Ticket: Account # xxxxxxxxxxxxx, phone call with customer:
Tested @ 2:38 PM 1/8/2015: 91/92 (HP)
Tested @ 2:40 PM 1/8/2015: 87/91 (Asus)
Tested @ 2:42 PM 1/8/2015: 90/86 (HP)
Tested @ 2:44 PM 1/8/2015: 88/66 (Asus)
Checked Speed & Duplex settings of HP device. Changed to Full 1 GBPS setting.
Tested @ 2:49 PM 1/8/2015: 91/92 MBPS (HP) Restarted HP b/c it appeared that
Speed & Duplex settings didn't take effect. Tested @ 2:54 PM 1/8/2015: 94/92 MBPS
(HP).
CX advised me that he has a 3rd party router installed in between the NB and his PC's.
CX asked if this would cause issues. I educated CX that it would b/c some routers will
limit speeds to 100 MBPS. I requested the CX bypass the 3rd party router and HW
directly to the NB. Only the Asus device could be HW'd directly to the NB. The Asus
device is not GIG capable, and would not provide best results.
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Narada Metrics Integration with PTaaS
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Importance of vantage points for perfSONAR
Fun of working with ISPs and Users together… 
MU<->KC = 12 Mbps
KC Home to 150.199.7.214 = 50 Mbps
MU to 150.199.7.214 = 350 Mbps
MU<->OSU = 360 Mbps
MU to 150.199.4.146 = 347 Mbps
OSU to 150.199.4.146 = 840 Mbps
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Route path from KC to MU
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6
7
8
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<1 ms
1 ms
1 ms
1 ms
3 ms
1 ms
6 ms
12 ms
4 ms
4 ms
4 ms
4 ms
6 ms
<1 ms
1 ms
1 ms
1 ms
2 ms
2 ms
4 ms
6 ms
4 ms
10 ms
4 ms
4 ms
4 ms
Bottleneck
<1 ms networkbox.home [192.168.1.1]
?
segment?
2 ms 10.26.0.25
?
1 ms ae9.bng01.mci122.googlefiber.net [192.119.17.142]
?
1 ms ae1.pr01.mci103.googlefiber.net [192.119.17.33]
1x10G
3 ms kc-core-01-tengige0-0-0-6-2.mo.more.net [150.199.7.205]
1x10G
1 ms umicn-kc-tengige0-1-0-1.um.more.net [150.199.7.253]
1x10G
4 ms umicn-cn-tengige0-0-0-1-1.um.more.net [150.199.4.169]
1x10G
4 ms umc-nn-i2.bb.missouri.edu [150.199.4.198]
2x10G
4 ms SOLO-xe010.1710.bb.missouri.edu [128.206.1.74]
2x10G
13 ms TEXUS3-SOLO-area0.bb.missouri.edu [128.206.130.194]
2x10G
4 ms RSCT1-TEXUS3.bb.missouri.edu [128.206.130.45]
2x10G
4 ms RSCN1-v300.bb.missouri.edu [128.206.2.203]
1x10G
4 ms ecaas1.rnet.missouri.edu [128.206.119.182]
1Gig host
• Issues with ‘TCP Window Size settings’ in Windows OS
– Hosts with default settings impacted Kinect sensor data throughput over
wide-area network paths
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Simulation-as-a-Service
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Advanced manufacturing design today requires iterative and
collaborative work among multi-site engineering experts…
• Collect requirements
• Reverse engineer
physical component
(e.g., scans)
• Build CAD model for
virtual component(s)
Model
Simulate
• Collaborate with customer via
conferences
• Ship VMs back-and-forth
• Iterate and improve component
(i.e., Parameters, Geometry)
• Apps for vertical
• E.g., PipeFlow,
CarPredictor, EduApp
• Manufacture physical
improvements
Delivery
New Component
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GENI for SMaaS Resource Brokering
Our environment uses GENI to provision resources to both App developer and
App customers based on the individual requirements
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SMaaS App Deployment
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Summary of supporting GENI Services for User Opt-in
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Last-mile networks are a challenge
– High-speed connections (e.g., Google Fiber in Kansas City, OARnet & MDC in
Dublin, OH) are needed, but not enough…
– Users “feel” network is always the problem!
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Getting a GENI Rack into a city data center/experiment slice was necessary
– Challenges with hosting, networking and platform setup
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Significant collaboration needed between App developers, network operators
and users for testing and ensuring peak performance
– Not easy to translate ‘High Bandwidth’ & ‘Low Latency’ user requirements to
suitable Cloud resource configurations in GENI
•
Virtualization complicates performance troubleshooting
– Is it the application, network or virtualization?
•
Issues such as cost of the App/Service become important to users
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Thank you for your attention!
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