This document discusses technologies for delivering infrastructure, platform, and software as services. For infrastructure as a service (IaaS), challenges include improving energy efficiency of servers and reducing datacenter costs through techniques like heatpipe cooling and net zero design. For platform as a service (PaaS), challenges involve managing consistency, availability, and partition tolerance. Novel software as a service (SaaS) applications discussed include print sharing, rankings, predictions, and collaboration tools. Overall the document examines ongoing research aims to advance cloud computing technologies and services.

1. EEDC
34330
Execution Everything as a Service:
Environments for Powering the New
Distributed Information Economy
Computing
Master in Computer Architecture,
Networks and Systems - CANS
Homework number: 5
Group number: EEDC-30
Group members:
Javier Álvarez – javicid@gmail.com
Francesc Lordan –francesc.lordan@gmail.com
Roger Rafanell – rogerrafanell@gmail.com

2. Information is one of the most valuable resources
There is a worldwide need for real-time information

3. Research aims to deliver
● Technologies for servers, storage, net and management (IaaS).
● Technologies for a shared cloud infrastructure (PaaS).
● Novel consumer and enterprise services (SaaS).

4. IaaS
Scalable computing services
● Offers: Virtual Machine instances
● Main Challenge: Energy efficiency!

5. IaaS
Scalable storage services
● Offers also:
– Block devices
– File systems
– Databases, ...
● Main Challenge (CAP Theorem):
– Consistency: Are reads consistent with the last write?
– Availability: Can I access my data?
– Partition-Tolerance: Can my system tolerate a split in N parts?

6. Solutions (server design)
● Heatpipes server cooling technology improve energy efficiency
by factor of 4-6 to current one.

7. Solutions (cost reduction)
● Net zero datacenter design: Reduce datacenter cost & minimize energy
consumptions.
● Non-critical services can be run with time-variant and “free” power supplies.
● 41% reduction in life-cycle energy footprint and 48% reduction in TOC.
● If every datacenter applied these techniques:
– Savings of 650.000 TeraJoules in 3 years = Peru energy production.

8. Solutions
● Erasure coding system
+ Can tolerate more failures.
- Management protocols become more complicated.

9. PaaS
● Separation between:
● Infrastructure management
● Service management
Guaranteeing:
● Security, isolation, reliability of the infrastructure.

10. Solutions
● Cell-as-a-Service
Allows isolated infrastructure definition through XML resource
description document (Cell model description).
● Cell controller allows:
– Describe VM Specs: Memory, buses, subnets (overlay),
failure reactions.
– Interact securely with service provider & monitor virtual
infrastructure.
● Cell management:
– Create & Delete virtual components.
– Manage the connectivity among them.

11. SaaS
● New class of services for an increasingly
connected population.
● Collective intelligence for a large variety of
uses.

12. Solutions
● Software-as-a-Service
● ePrint
– Use mobile devices to send files to print.
● Rankr
– Create rankings by aggregating collective wisdom.
● i-Catcher
– Long-term popularity predictions based in initial
popularity.
● Watercooler
– Enterprise collaboration 2.0 technology.

13. Conclusions
● Great progress has been done in Cloud
computing but many challenging problems still
remain.
● Scientists and engineers need to continue
pushing forward or the advances will not take
place.

14. Questions