Xiao Liu PhD Thesis.pdf - Faculty of Information and Communication ...

segment is minimal, i.e. the solution which can compensate the occurred time deficit
as much as possible, or even entirely remove it. Based on such a two-stage searching
process, the balance between the execution of workflow instances with temporal
violations and those workflow instances without temporal violations can be achieved.
3.5 Simulation Environments
The framework proposed in this thesis is being gradually implemented as system
components in our SwinDeW-C (Swinburne Decentralised Workflow for Cloud)
scientific cloud workflow system [53, 59, 96]. SwinDeW-C is a cloud workflow
system prototype built on SwinCloud, a cloud computing test bed. All the simulation
experiments demonstrated in this thesis are conducted in our SwinCloud
environment. Therefore, to present to the readers a clear picture of a scientific cloud
workflow system and avoid the redundancy of the introduction about simulation
environments in the subsequent chapters, SwinDeW-C and SwinCloud are
demonstrated earlier in this section.
The SwinCloud infrastructure and SwinDeW-C architecture are depicted in
Figure 3.2 and Figure 3.3 respectively.
Figure 3.2 SwinCloud Infrastructure
SwinCloud is a cloud computing simulation test bed, on which SwinDeW-C is
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