
Cloud-enabling geoscience applications 85
head node and the computing nodes (e.g., 9000–9999 in this case)
should be opened.
Step 2. Launch an instance—EC2 provides cluster instances for running
HPC applications. The cluster instance
1
provides relatively high CPU
resources with increased network performance, making this type of
instance quite suitable for HPC applications. The cluster instance can
be launched from a special EBS (Elastic Block Store)-backed Amazon
Machine Image (AMI) using a Hardware Virtual Machine (HVM)
virtualization (Figure5.10). In addition to this type of cluster instance,
users can also select High-CPU Instances or H