Wanted: Ultra-fast fortran compiler for UNIX

840033@G.Pavlov pavlov at hscfvax.UUCP
Mon Jul 29 12:30:55 AEST 1985


 Fortran (unfortunately ?) is important to us; we've looked at Fortran execu-
 tion times closely on our Sys III derivative, compared to BSD 4.2, Tops 20,
 and VAX VMS. 
 
 The primary problems are most definitely in the math libraries. A loop such
 as
    DO .....

     j = j+k
     r = a*b
       ......

will stay within the 30% performance range mentioned previously. But insert
cos(), atan(), etc, and Unix Fortran slows to a crawl.

I/O isn't much better .................


  greg pavlov, FSTRF, Amherst, N.Y.



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