Bugs item #2596114, was opened at 2009-02-13 15:32 Message generated for change (Comment added) made by stmane You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2596114&group_id=56967
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: SQL/Core Group: SQL CVS Head >Status: Closed Resolution: Fixed Priority: 5 Private: No Submitted By: Jens Oehlschlägel (jens_oehl) Assigned to: Stefan Manegold (stmane) Summary: POWER(x,2) by factor 100 slower than x*x; Initial Comment: POWER does not recognize tuning opportunities with certain constant integer exponents. Oberved under Win32 Feb2009Alpha Replication and demonstration of speed potential attached. ---------------------------------------------------------------------- >Comment By: Stefan Manegold (stmane) Date: 2009-04-02 23:06 Message: added test in sql/src/test/BugTracker-2009/Tests/POWER_vs_prod.SF-2596114.stable.* ---------------------------------------------------------------------- Comment By: Stefan Manegold (stmane) Date: 2009-02-14 10:46 Message: re-opened to remind me that I want to add a test after all ... ---------------------------------------------------------------------- Comment By: Martin Kersten (mlkersten) Date: 2009-02-14 06:22 Message: The naming convention for the multiplex variants [bat]mmath where not obeyed. This made the remap optimizer not aware of the existence of fast math function implementations. no test needed. ---------------------------------------------------------------------- Comment By: Martin Kersten (mlkersten) Date: 2009-02-13 17:14 Message: Indeed, power(x,2) is not replaced by x *x, which is btw often down within the function itself and you only safe the functionc all overhead. The real issue is that power(:bat[:oid,:flt],:flt):bat[:oid,:dbl] is missing in batmath.mx Fix pending. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2596114&group_id=56967 ------------------------------------------------------------------------------ _______________________________________________ Monetdb-bugs mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/monetdb-bugs
