dwi@manta.NOSC.MIL (Steve Stamper) (06/13/89)
For anyone curious, I have recompiled the QRT pd ray trace program using Lattice C 5.0x. It is available on this site in the /usr/ftp/pub directory. Here are the benchmarks results, all rendered the same scene in the same perspective. There was no difference in the output from any of the runs (including VAX) On an A2500 w/ 4MB, 32 bit RAM: lc 5.0x.xx using sample_code1, 8 reflecting spheres connected by 12 cylinders Qrt(stock version no lattice C) 55 mins 53 secs QRTFFP(Lattice c using FFP math) 38 mins 18 secs QRTFFP020(Lattice C using FFP math/020 instructions) 37 mins 53 secs QRTLIB020(Lattice C using 1.3 Math Libraries/020) 45 mins 07 secs QRTLIB(Lattice C using 1.3 Math Libraries) 45 mins 23 secs QRT881(Lattice C using inline 881 and 020 instructions) 22 mins 33 secs _________ QRT on Vax 8650 4.3 BSD Unix - 3 Mins 51 secs -Roger Uzun