bevis@EE.ECN.PURDUE.EDU (Jeff Bevis) (12/02/89)
In article <8911270459.AA20156@decwrl.dec.com>, drew@cgofs.dec.com (Steve Drew 26-Nov-1989 2158) writes: > > I happened to of benchmarked one of my programs before > installing the supra memory, and noticed that the benchmark > ran 50% SLOWER after intalling the supra memory. > You just reminded me of a problem I've been having lately (although not of the same nature, exactly). Perhaps someone will have an answer. I'm writing a program which does a lot of blit's and floating point calculations when it starts. On my A1000, with 1M of fast memory attached, the pre-calculation period runs about 10 seconds. However, I have run this code on an A2000 with BridgeCard (which I know nothing about...) and the same pre-calculation period runs at least 15-20 seconds. In addition, the meat of the program runs visibly slower (it is allowing you to scroll across a world map, composed of individually-blitted countries). The thing runs nicely on the 1000, but on the 2000 the slowdown is annoying. My first thought was that the 1000's fast memory is outrunning the 2000's slow-fast memory. But there's quite a difference in speed -- is this normal? If so, YUCK! (I had to say that :-) Other pertinent info: The display is 640x200x4 The 2000 doesn't have fat-agnus. Any thoughts on this? I'd like to get the thing running as fast as possible on the 2000, too, before I finish the thing. +--------------------------------+--------------------------------------------+ | Jeff Bevis | "But I don't like spam!" | | bevis@en.ecn.purdue.edu | Give me Amiga or nothing at all. | +--------------------------------+--------------------------------------------+