[Beowulf] A start in Parallel Programming?
Robert G. Brown
rgb at phy.duke.edu
Tue Mar 13 23:01:49 PDT 2007
On Tue, 13 Mar 2007, Jim Lux wrote:
> I should mention that if you want to really obfuscate things, you could do
> something like
> IF (0) 901,902,903
> because you know that only 902 will be a target. And, almost all compilers
> could figure out that the argument is fixed, so it would emit a JMP $902 or
> whatever... You could make the other targets something really obscure, and
> hopefully many pages away, and rather than make the argument a constant, some
> complex expression that always evaluates to the same value (like those "think
> of a number" puzzles).
> Good for detecting copyright infringments, eh?
Yeah, THAT would have fooled my profs, sure!
Robert G. Brown http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567 Fax: 919-660-2525 email:rgb at phy.duke.edu
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