I suspect there's something odd in your data. The attached network creates a regular grid of 1M points, irregularizes them (thats the Mark/Compute/Unmark stuff), colors them, ShowPositions them, and renders them. On my laptop, when I run with -memory 60, it renders in a couple seconds - it takes longer to AutoColor them.
Greg (See attached file: pts.net) Geraldine Cheok <[EMAIL PROTECTED]>@opendx.watson.ibm.com on 08/31/2001 10:22:35 AM Please respond to [email protected] Sent by: [EMAIL PROTECTED] To: [email protected] cc: Subject: Re: [opendx-users] Image display Hi Peter, Thank you for your suggestion. I increased the virtual memory to 2.5 GB, decreased the number of points to from 1.7 million to 836,000 and after letting it chug for over 1 hr. I gave up and ended the task. I increased the virtual memory to 4 GB and saw no difference. This seems to indicate that the virtual memory is not the culprit in this case. When I displayed 418,000 points with 2 GB virtual memory, the image came up in a couple of minutes. In both cases, I am using ShowPosition rather than Glyphs. Is there some setting for page swapping in DX? Would a dedicated graphics board work better and if so, which board? Thanks. Gerry At 01:51 PM 8/31/2001 +0200, you wrote: >Hi Gerry > >No, I doubt it is the machine, we also run big data sets on similar spec. >machines (upto 1GB RAM) and find that image can be slow but gets there >eventually. The important thing is to may sure there is enough memory >space (virtual if not physical) assigned, so that the module can realloc >successfully. Use the "-memory " switch to specify 2GB (assuming your NT >swap file is bigger than that) and then sit back and wait..... > >If you are using glyphs, make sure you use the "speedy" optio. This really >cuts down on the processing time. If we need fancy symbols for publication >plots etc, we use "normal" or "spiffy" when you need to make the plots, >but for "work" we use the simple stuff. > >Peter > > >At 18:06 30/08/2001 -0400, you wrote: >>Hi, >> >>I am trying to display about 1.7 million data points in DX. My PC is >>WinNT and has 640 MB RAM, 32MB video card, and has Exceed installed. The >>program hangs-up when it gets to the image module. Is there a memory >>problem with my PC, Exceed, video card? >> >>Thanks. >> >>Gerry >
pts.net
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