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Subject: Re: latest NT graphics cards for ANSYS.... ? inter im result.....
Author: Sheldon Imaoka
Date: 2000-10-25 23:56:00

Thanks for your email, Chris.

My scheme is set to "none" for mouse pointers. (Once, long ago, I got a
cheap laugh out of South Park cursors illustrating many ways of Kenny
getting killed, but since then, I've outgrown that phase) I get the
slowdown of cursors with the default/none scheme.

...[5 min later]...Based on your email, I turned off "enable pointer shadow"
of the mouse. /DEMO now works fine with the cursor on the screen. Thanks!

Much thanks,
Sheldon

----- Original Message -----
To:
Sent: Wednesday, October 25, 2000 12:33 PM

result.....

> With regard to the cursor affecting speed, we think this is due to not
> getting
> hardware cursor support from the graphics card. It seems to affect all
> GL-based
> graphics (which would probably include your CAD systems and DesignSpace as
> well).

> We've notice that this can happen when you are not using a monochrome
> cursor.

> To test this out on your system...

> Go to control panel
> Open up the Mouse icon
> Select the 'Pointers' tab.

> Make sure the 'Scheme' is set to 'none' and see if it makes a difference.

> Chris.

> -----Original Message-----
> From: Sheldon Imaoka [mailto:sheldon@c...]
> Sent: Tuesday, October 24, 2000 11:00 PM
> To: xansys
> Subject: Re: [xansys] Re: latest NT graphics cards for ANSYS.... ? inter
> im result.....

> /DEMO is very cool for graphics performance, but what I've found is that
if
> using 3D graphics, the cursor should not be on the graphics window;
> otherwise, much slower (2x) speed times will be reported. I never
bothered
> to figure out if this was due to my crappy graphics cards or with ANSYS,
but
> this was exhibited on a few different PCs using 5.5.x and 5.6.x. (I can't
> recall the specific versions since it was a while ago, but I just checked,
> and the same thing occurs at 5.6.2 on my laptop -- then again, the ATI
Rage
> Mobility-P on a laptop isn't one which screams, anyway) You can try
this --
> issue something like /DEMO,100,1 and move your cursor over the Graphics
> window, and the plots will be about twice as slow. Hence, when doing
> benchmarks/comparisons, please keep this in mind, if this affects you.

> Another thing I've never figured out is why, when comparing /GRAPH,POWER
and
> /GRAPH,FULL, that speed times don't vary dramatically for 3D graphics.
> Attached is a small PDF file showing some differences between win32 and 3D
> graphics. (Remember that this is done just now on my notebook, so it's
not
> with a good graphics card) It's a model of a meshed cube. With 3D
> graphics, the differences between Full and PowerGraphics seem minimal. I
> see a similar trend with many (but not all) other types of ANSYS models.
I
> haven't pinpointed why this is so. Maybe because the object is stored as
a
> "3D" object, rotation speed is negligible for either a "full" model or
> powergraphics object, as long as both fit in memory since OpenGL stores
> stuff as a 3D array, or something like that, rather than a 2D graphics
> algorithm which does a projection into 2D at every rotation (like
> z-buffering algorithm, etc.)... I forgot the details of this stuff.
Also,
> with win32 graphics, contour plots, element plots, etc. seem faster with
> /POWER,GRAPH, but actions like multiplots (GPLOT) aren't as dramatically
> faster.

> Anyways, I was never much of a graphics performance person, but I like
using
> /DEMO as Paul mentioned below, with different configurations. I use it
> mainly for 3D OpenGL drivers since, for x11 or win32, I don't think the
> graphics card is used much (or directly) by that driver. However, it's
> interesting to use win32 since many of us probably still use it, although,
> if I recall correctly, the win32 results tend to be more related to CPU
> rather than graphics card (as noted above)...

> Like I mentioned above, I used to think I knew this graphics stuff, but
> there are so many permutations, I soon gave up. If it plots fast and
> correctly, I'm golden -- anything else, I whine loud and persistently to
my
> boss (in response to a very hilarious posting of Mark Rodamaker's).

> Laters,
> Sheldon
> CSI

> ----- Original Message -----
> From: "Paul Tallon"
> To:
> Sent: Tuesday, October 24, 2000 12:55 PM
> Subject: RE: [xansys] Re: latest NT graphics cards for ANSYS.... ? inter
im
> result.....

> > Mike,

> > Try /DEMO,100,1 to compare graphics performance.

> > This will rotate the current display 100 times and print out the data to
> the
> > output window.

> > Paul Tallon
> > ANSYS Inc.

> > > -----Original Message-----
> > > From: Michael W. Hiller [SMTP:mhiller@i...]
> > > Sent: Tuesday, October 24, 2000 3:22 PM
> > > To: Xansys
> > > Subject: [xansys] Re: latest NT graphics cards for ANSYS.... ?
> > > interim result.....

> > > thanks for all the suggestions last week on video cards.....

> > > I went with the NVIDIA chipset... less risk than the "newer" chipset
we
> > > discussed.
> > > rec'd and installed a GeFORCE 32 meg DDR card card card today....
> > > (check out UBID.COM - - they seem to be selling a lot of VisionTeks
and
> > > the
> > > prices are lower now than last week - - winning prices now around $179
> vs
> > > $189 last week)

> > > I wrote a do loop macro to compare my old card (Diamond GL1000Pro) to
> this
> > > new one... this macro rotates a large model (70,000 brick45, 2500
> volumes)
> > > and alternates EPLOT and VPLOT. The macro then calculates the
DELTACPU
> > > and
> > > DELTAWALL (from the benchmark macros! thanks PADT!).

> > > The deltas are about 25% quicker with the new card.... probably CPU or
> > > AGPx1
> > > limited now. The interactive spinning is incredibly faster...
> virtually
> > > no
> > > delay compared to my old card....

> > > results were even about 2% better with new drivers downloaded from
> > > Austin////

> > > picked up another 1% using ANSYS 5.7 beta2.... will be trying it on
> beta3
> > > later in week.....

> > > well this was the best $200 upgrade I ever saw..... maybe do the
Quadro
> > > hack in a couple weeks....

> > > well thanks for all your suggestions.....

> > > I did not mean to turn XANSYS into a hardware discussion, but with all
> the
> > > consideration being given recently to the batch CPU and Harddrive
> > > benchmarks, I thought some "interactive" data might be appropriate....
> > > after all, I think most of us spend the majority of our time in front
of
> > > the
> > > tube doing preprocessing anyway......
> > > enuf said....

> > > take care and regards,

> > > Michael W. Hiller
> > > In2 Solutions, Inc.
> > > MCAE Consultants specializing in Multi-Physics ANSYS FEA and Pro/E
> > > Modeling
> > > and Design Automation
> > > "Offering consulting, training, implementation, and other
individualized
> > > solutions for your product design and analysis challenges"
> > > 229 Strathburgh Lane Suite 201
> > > Cary, NC 27511
> > > Tele: 919/851-0373
> > > Fax: same number, Tele first to arrange
> > > or E-FAX: 253/276-9344
> > > Email: mhiller@i...
> > > Visit our newly expanded WEB site: www.in2solutions.com

Posts possibly associated with message #17065AuthorDateScore
17028Re: latest NT graphics cards for ANSYS.... ? inter im result.....Paul Tallon2000/10/24 
17032Re: latest NT graphics cards for ANSYS.... ? inter im result.....Sheldon Imaoka2000/10/24 
17039Re: latest NT graphics cards for ANSYS.... ? inter im result.....John Sims2000/10/25 
17059Re: latest NT graphics cards for ANSYS.... ? inter im result.....Chris Hawkins2000/10/25 
17065Re: latest NT graphics cards for ANSYS.... ? inter im result.....Sheldon Imaoka2000/10/25