Supercomputers need super, or at least novel, debugging.
To meet that need, Cray has just agreed to license Australian software start-up Guardsoft's "relative" debugging technology for use in its new DARPA-funded supercomputer.
Relative debugging allows programmers to track bugs that creep into software as it is modified, or ported from one system to another, according to Guardsoft. It does this by comparing the execution of a suspect program with a clean version. This differs from traditional debugging in two ways: First, it compares program variables not with the user's expectations but with another program known to … Read more