I've been doing some bandscope graphics using C# for Mercury using .NET 2. The speed improvement and drop in CPU usage is very significant over .NET 1. Perhaps a move to .NET 2 will give us a boost without the need to change the graphics code.
Phil...VK6APH Quoting Eric Wachsmann <[EMAIL PROTECTED]>: > The high level display code is not the primary problem (though I'm sure it > could be improved). The issue is that we're using a graphics library (GDI+) > from the .NET library that has ZERO hardware acceleration. This means that > all vector rendering is done in software instead of utilizing the GPU that > is in 90% of systems that were purchased in the last 3 years. > > Eventually we will need to use an accelerated library that utilizes the > hardware to do what we are trying to do. When we do that, we will chop off > approx. 85% of the CPU ticks due to the display (which is a large portion of > the total). These are things which I look forward to participating and > enjoying. > > This message was brought to you by SDR and open source software. ;) > > > Eric Wachsmann > FlexRadio Systems > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > > radio.biz] On Behalf Of Bob McGwier > > Sent: Friday, December 08, 2006 11:49 AM > > To: Jim Lux > > Cc: flexradio@flex-radio.biz > > Subject: Re: [Flexradio] PlayStation 3 > > > > Professionally I have used dttsp running on a Linux box, processing 48 > > ksps IQ data to process 15 kHz wide FM signals. On a Pentium III Xeon > > rack mount server from Dell, we process in excess of 100 channels of > > this data real time. This is in addition to supporting a Qt based GUI > > and power spectral display (one channel at a time, channel may be picked > > by cognitive DR or manually), taking firewire in with the 100 channels > > on it delivered isochronously. The processor is not overburdened and > > it is a 2 GHz Pentium III. The graphics display code in PowerSDR is > > just not up to the task. > > > > Bob > > N4HY > > > > > > Jim Lux wrote: > > > At 05:25 PM 12/7/2006, Charles Greene wrote > > > > > > > > >> There's a write up on PS3 and writing game software for it in the > > >> latest edition of IEEE Spectrum. I was just thinking about what a > > >> super SDR you could have using it. Talk about some real fast DSP. > > >> > > > > > > > > > > > > I have the impression that, most of the CPU in the current > > > incarnation of PowerSDR is burned up in the GUI, not the DSP, > > > right? All those pretty displays, band scopes, Windows GDI > > > stuff. The actual signal processing hasn't changed much since the > > > days when a 1GHz processor was considered adequate. > > > > > > Now, if you wanted to run hundreds of receivers covering 1.8-30 MHz > > > simultaneously while synthesizing a phased array with 30 elements or > > > something like that, you might need some more "cruch", but in that > > > situation, I suspect that there are other aspects of the problem that > > > will drive your design (like A/Ds, signal distribution, and such). > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > FlexRadio mailing list > > > FlexRadio@flex-radio.biz > > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > > > FlexRadio Homepage: http://www.flex-radio.com > > > > > > > > > > > > -- > > Robert W. McGwier, Ph.D. > > Center for Communications Research > > 805 Bunn Drive > > Princeton, NJ 08540 > > (609)-924-4600 > > (sig required by employer) > > > > > > > > _______________________________________________ > > FlexRadio mailing list > > FlexRadio@flex-radio.biz > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > > FlexRadio Homepage: http://www.flex-radio.com > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
