How do Unix and VMS compare?
mcdermot at unmvax.UUCP
mcdermot at unmvax.UUCP
Fri Jun 15 02:15:37 AEST 1984
One question Sean Casey asked about Unix vs. VMS was speed of VMS
FORTRAN against Unix C. I did just such a comparison some time ago
comparing machines with 10 users each (the unix was 4.2BSD) and I
found little difference in run time of compute oriented jobs.
I/O, however, is quite a different story: I ran these little programs
and found the C to be about 10 times faster than the FORTRAN! This just
points out how poor FORTRAN's I/O system is, though, and was primarily
used to convince some friends to get a unix machine (they do a lot of
I/O so this was really important).
program iobench
do 111 i=1,65000
write(6,61)'aaaa'
61 format(a4)
111 continue
end
main(){
register int i;
for(i=1;i<=65000;i++)
printf("%s\n","aaaa");
}
Hope this helps,
john
--
John McDermott {gatech|ucbvax|convex}!unmvax!mcdermot
Univ of NM W (505) 277-4650
Albuquerque, NM 87131 H (505) 255-7796
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