Greg Becker 19087c9d35 target optimization: re-norm optimization scale so that 0 is best. (#29926) ... referred targets are currently the only minimization criteria for Spack for which we allow negative values. That means Spack may be incentivized to add nodes to the DAG if they match the preferred target. This PR re-norms the minimization criteria so that preferred targets are weighted from 0, and default target weights are offset by the number of preferred targets per-package to calculate node_target_weight. Also fixes a bug in the test for preferred targets that was making the test easier to pass than it should be.		2022-05-27 22:49:41 -07:00
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spack	target optimization: re-norm optimization scale so that 0 is best. (#29926)	2022-05-27 22:49:41 -07:00