1. Sponsored by the National Science Foundation ExoGENI www.exogeni.net

2. Sponsored by the National Science Foundation2www.geni.net ExoGENI: What is it? A collection of ‘racks’ being installed on campuses across US and the world –Core of ExoGENI is built on IBM hardware –Also support Dell and Cisco UCS-B Runs ORCA control softaware Federates with other GENI resources –Supports common identity mechanisms, APIs and resource descriptions

3. Sponsored by the National Science Foundation3www.geni.net ExoGENI at a glance

4. Sponsored by the National Science Foundation4www.geni.net ExoGENI: why different? Designed to bridge distributed experimentation and computational science –Supports sliverable storage for ‘Big(gish) Data’ –Supports easy native ‘stitching’ of resources across racks Optimized for different design choices –ExoGENI does not support lightweight containers –Only VMs with tightly accounted cores and baremetal nodes for strong performance isolation This means even VM slivers are limited. ExoGENI does not oversubscribe CPU cores! Makes few(er) assumptions about experiment behavior or purpose. For example: –IP forwarding is not on by default –No IP address is assigned to dataplane if the RSpec doesn’t assign it

5. Sponsored by the National Science Foundation5www.geni.net ExoGENI: How Different? Based on a different technology stack –Off-the shelf cloud solutions with lightweight orchestration on top –OpenStack for VMs –xCAT for baremetal nodes –ORCA (Open Resource Control Architecture) federation software written by Duke University and RENCI/UNC Chapel Hill Provides additional features over native APIs using native tools –Over time some features migrate back to GENI Important! Can be thought of as both a –Collection of separate racks (each rack has GENI AM API point) –Singe aggregate capable of complex topology embedding (So- called ‘ExoSM’ provides orchestration across racks) The important thing is your experiment. Decide on what types of resources you need and what features you expect. Decide on the tools, decide on the resources.

6. Sponsored by the National Science Foundation6www.geni.net ExoGENI: ORCA Control Framework ORCA provides orchestration and GENI federation –Exposes GENI AM API and allows the use of RSpec. Allows the use of GENI tools –Exposes a native API and the use of native resource description mechanisms. Allows the use of ExoGENI-specific tools. ORCA provides stitching across ExoGENI aggregates –Between ExoGENI racks –Includes ‘stitching’ to campus resources, where appropriate Provides topology embedding support –Slices can be ‘bound’ to particular racks or ‘unbound’, leaving it up to ExoSM to decide where to allocate resources –Experimenter can ‘talk’ to individual racks to get resources or get ExoSM to select the rack ExoSM can even automatically split some slices between racks

7. Sponsored by the National Science Foundation7www.geni.net Details: Hardware ExoGENI * Nodes per rack10 workers + 1head Cores per rack160** Network interfaces2x 10Gbit*** with SR-IOV Storage150GB+500 GB local + 6 TB SAN SwitchesIBM G8264R (Port-based OpenFlow) * Listed are the specs for ExoGENI IBM-based racks. ** Actual number of available cores varies. *** Racks deployed at OSF and StarLight will have 40Gbps option

8. Sponsored by the National Science Foundation8www.geni.net Specific Notable Behaviors Resource allocation –ExoSM can allocate slices across multiple racks at once and can stitch them together using NLR, I2 and ESnet Images –Bare-metal – just a few available for now –VMs – BYOM (Bring Your Own Image) ExoGENI does not host images Image can be created by experimenter consistent with making an OpenStack or Eucalyptus image ExoGENI will download any image from any URL Images can (to some extent) mix and match kernels, ramdisks and filesystems

9. Sponsored by the National Science Foundation9www.geni.net ExoGENI VM Image Descriptor Format ZFILESYSTEM 4faf41957859031b434bb74e1f41f72f87512ec6 http://geni-images.renci.org/images/standard/centos/centos6.3- v1.0.7.tgz KERNEL bb49676465d6bf01c8bdd688dcdb14bf2f62d7db http://geni-images.renci.org/images/standard/centos/kernels/vmlinuz-2.6.32- 279.14.1.el6.x86_64 RAMDISK bb827d5183fe1aa2c68e7244a5d684f850e33721 http://geni-images.renci.org/images/standard/centos/kernels/initramfs-2.6.32- 279.14.1.el6.x86_64.img

10. Sponsored by the National Science Foundation10www.geni.net More on ExoGENI VM Images Images are specified by tuple ‘Vetted’ images are listed with image registry service –http://geni.renci.org:12080/registry/images.jsphttp://geni.renci.org:12080/registry/images.jsp –Examples: Ubuntu, Debian, CentOS, OVS, OpenDaylight, Hadoop, Condor etc –Image marked ‘default’ used on slices that don’t specify an image Images are built in a ‘PlayPen’ environment –Stand-alone OpenStack environment suitable for debugging boot problems Snapshotting not currently supported

11. Sponsored by the National Science Foundation11www.geni.net Specific Notable Behaviors (continued) Boot scripts – and services are supported –There is additional type Embedded directly into the RSpec, not loaded separately like script Passed through a template engine that does –Variable substitutions for common slice parameters: node names, slice names, IP, MAC addresses of interfaces etc. –Has a Turing-complete language for automatic code generation (if/then, for loops, variables)

12. Sponsored by the National Science Foundation12www.geni.net Example Post-Boot scrip template #!/bin/bash echo $NodeGroup0.get(0).IP("Link0") master >> /etc/hosts #set ( $size = $NodeGroup0.size() - 1 ) #foreach ( $i in [1..$size] ) echo $NodeGroup0.get($i).IP("Link0") `echo $NodeGroup0.get($i).Name() | sed 's/\//-/g'` >> /etc/hosts #end name=$self.Name() if [ "$name" = "NodeGroup0/0" ]; then echo master > /etc/hostname else echo $self.Name() | sed 's/\//-/g' > /etc/hostname fi /bin/hostname -F /etc/hostname

13. Sponsored by the National Science Foundation13www.geni.net Post-boot script executed by a node #!/bin/bash echo 172.16.100.1 master >> /etc/hosts echo 172.16.100.1 `echo NodeGroup0/0 | sed 's/\//-/g'` >> /etc/hosts echo 172.16.100.2 `echo NodeGroup0/1 | sed 's/\//-/g'` >> /etc/hosts echo 172.16.100.3 `echo NodeGroup0/2 | sed 's/\//-/g'` >> /etc/hosts echo 172.16.100.4 `echo NodeGroup0/3 | sed 's/\//-/g'` >> /etc/hosts name=NodeGroup0/0 if [ "$name" = "NodeGroup0/0" ]; then echo master > /etc/hostname else echo NodeGroup0/0 | sed 's/\//-/g' > /etc/hostname fi /bin/hostname -F /etc/hostname

14. Sponsored by the National Science Foundation14www.geni.net Specific notable differences continued ExoGENI specific-tool: Flukes –Graphical Java tool (cross-platform) –Supports GENI credentials –Speaks to ORCA native API using orca native resource description mechanisms Some features are available only through Flukes –Elastic splittable node groups (dynamically resizable clusters automatically allocated across multiple racks) –Campus stitching – ability to connect slice to campus resources using available Layer 2 connectivity –Storage slivering – ability to allocate slivers of storage and stitch them into your slice

15. Sponsored by the National Science Foundation15www.geni.net Thank You More information: –http://wiki.exogeni.nethttp://wiki.exogeni.net –ExoBlog: http://www.exogeni.nethttp://www.exogeni.net Questions from experimenters: –Google group: geni-orca-users