COMP 4000/5102

An Analysis of Two Commercial Distributed Environments

Orhan K AKYILDIZ100768189

What?

I will try to develop an analysis of two pragmatic commercial distributed environments.

These environments are used as enablers of communication product offerings, as such, these are very targeted implementations.

These environments, S, and T, come from the same set of designers, but is now owned by two different startups in the US.

What?S

S, developed in mid 90s, is used as a framework to implement a distributed signalling system 7 (a highly popular signalling system in POT networks) stack.

Supported on many Unices: Solaris AIX Linux HP-UX

Used by some of the tier-1 telecom operators in North America, and Europe.

What?S (..ctd)

Features: Software implementation

Distributed shared memory (user-space)\ Distributed kernel memory Distributed record management Configurable and quasi-adaptive environment Fault-tolerant architecture.

Kernel implementation No patches / changes to existing kernel

modules (not hooked up to Unix VM)

What?T

Designed and implemented in early 2000s.

Used as an enabler to a OMA (Open Mobile Alliance) features on wireless networks, like location services, SMS, ring tones etc.

Platform portable – Java Functionality portable:

Can be built as a user space application, Or as kernel modules. (Remember Inferno).

What?T (..ctd)

Features Software Implementation

Distributed objects Fault tolerant client/server model

Core modules (10%) implemented in C. Services implemented in Java

Not hooked up to any other kernel systems (memory manager, etc.)

Why do I care? I was familiar with the designs, and wanted to

look into it closer (with whatever knowledge I gathered in this class).

Together they touch most of the basic ideas that we have been studying (except file systems)

An evolution in some sense Access to candid evaluation and cross

evaluation.. What can “startup pragmatism” do to your

design?

What is missing?Problems with the Project...

No Identifying information BIG PROBLEM for the final paper How do you refer to the work without identifying it? What good is a project paper with no references!

Alternatives: Make a literature search, and use these as use-

cases. Add one (two?) projects from academia, and work on:

Academia versus “start-up”