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Question:

What aspects of a single-system image are supported

Answer:

The main aspects are:
  1. Users can login on any node and do not need to know where their programs run.
  2. No need to modify or link applications with special libraries.
  3. No need to copy files to remote nodes.
  4. Automatic resource discovery: whenever clusters or nodes join (disconnect), all the active nodes are updated.
  5. Automatic workload distribution by process migration, including load balancing, process migration from slower to faster nodes and from nodes that run out of free memory.
  6. Preservation of the user's "login-node" run-time environment.