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Ok... Now how do I run those programs such that they are comparable to the ones on the benchmark game?

Make a request at kparc.com for the research version of k (k5).

If that doesn't work download q/kdb+ from kx.com (Windows/Linux/Mac OS X). It can runk4.

/ k4 implementations of the Bell Labs benchmarks are available http://kx.com/a/k/examples/bell.k