🚀 go-pugleaf

In article <1992Nov5.130359.1@uwovax.uwo.ca>, brent@uwovax.uwo.ca (Brent Sterner) writes:
> In article <1992Nov5.113540.1@uwovax.uwo.ca>, brent@uwovax.uwo.ca (Brent Sterner) writes:
>>    Just curious about memory demands for alpha.  I'm running a VAX 4500
>> with 128 MB memory.  Of that, SHO MEM tells me "38393 pages are permanently
>> allocated to VMS".  How big is VMS on an alpha system?  (Perhaps someone with
>> an alpha could post the last line from SHO MEM, though it might be misleading
>> if there is a lot of dbugging code still in place.  Perhaps someone inside
>> DEC has a non-debugging system they could use.)  Is there a rule of thumb for
>> typical programs ("alpha memory needs"/"vax memory needs" ~= "constant")?
>> Does a typical user (VAXC or FORTRAN) program require more or less memory on
>> an alpha system?

Hi,

Our tests have shown that ALPHA code uses about 3 times the address
space that VAX code does.  This is typical of RISC systems I am
told...especially when compilers (like the GEM backend used by Digital)
in-line routines and optimize for systems that issue multiple
instructions per clock-cycle.

Dan E. (A few months experience on Alpha)