From: Andrey G. Grozin <A.G.G<rozin@in...>  20110117 16:39:43

Hello *, Running times of the maxima testsuite by various lisps on my pentium E5300 box are sbcl1.0.45 165 cmucl20b 172 gcl2.6.8_pre 172 ccl1.6 322 ecl11.1.1 344 clisp2.49 552 For the first time, sbcl became fastest in this benchmark (in recent times, cmucl was faster). But... Now there is a new testsuite failure with sbcl. It's rtest16, problem 385. It's about floatingpoint calculation of zeta(%i+3) (%i is the imaginary unit). sbcl produced a resulr with error of order 3*10^(9) instead of expected 10^(15). Earlier versions of sbcl did not have this failure. Looks like a regression. All the other lisps listed above also don't have this particular failure (ecl has 2 failures in rtest8, this is another story). Looks like something is calculated in single precision when it should be done in double. It would be interesting to trace which change in sbcl has caused this regression. Many thanks for this excellent lisp system (I use it for maxima and fricas), Andrey 