Enable correctness testing. Correctness testing is disabled by default. Enabling requires a BLAS library (libblas) on BTO-executing server. When enabled, the input program is converted to a set of very naive BLAS calls which BTO results are compared to. This requires having and working BLAS with cblas entry points.

N.B. For best results, setting the testing size parameters is recommended if correctness testing is enabled. It is specified as 3000:3000:1 by default. See section Testing Size for more info.

When the correctness tester is turned on, it analyzes the same subset as the (default) empirical tester. This can be modified using the Threshold setting.