Parallel Contexts

We calculate the number of parallel contexts that can execute before
we see some degradation in each context.  If the test runs correctly,
we will have measured the number of contexts for integer operations,
float operations, and memory operations.

The database entry can be found by using the following string pattern:

parallel_contexts.integer_context
parallel_contexts.float_context
parallel_contexts.memory_context

The return type is integer.

