Slow graphics rendering
- To: mathgroup at smc.vnet.net
- Subject: [mg42009] Slow graphics rendering
- From: hurschler at gmx.de (Christof Hurschler)
- Date: Mon, 16 Jun 2003 03:57:47 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
im using Mathematica 4.0 with W2K on a P-IV
when I for example evaluate
t0 = SessionTime[];
Plot3D[If[x^2 + y^2 < (4/5)^2, Sqrt[1 - x^2 - y^2],
Sqrt[1 - (4/5)^2]], {x, -1, 1}, {y, -1, 1}, PlotPoints -> 30,
Mesh -> False];
SessionTime[] - t0
on my P-IV it takes 6 seconds, on my old machine a P-II it takes less
than one second! I haven't been able to figure out why it's so slow
on my new machine.
I've observed that the time to evaluate cells is much faster on the
P-IV, as would be expected (using Timing()). But for some reason
graphics rendering is much slower on my fast machine despite an
apparantly funcitoning NVidia GForce graphics card with 64MB (Hardware
tests ok, other programs ok).
Mathematica servie doen't seem to want to help me because I'm using a
somewhat older version of the program.
Does anyone have any idea what could be causing this slowdown?
Thanks,
Christof