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| Ultimate++ for My Thesis [message #13622] |
Thu, 17 January 2008 20:30  |
niofis
Messages: 9
Registered: January 2008
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Promising Member |
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I really really need to thank the Ultimate++ team. Thanks to you for helping me get my thesis project one big step furter.
I'm (still) working, on a ray tracing engine that distributes the rendering work over many (all available), comodity pcs networked together, intened to achieve realtime rendering. Akin to OpenRT.
At the beginning I was using VCEE 2005, but ran into different problems with it.
The first was that, the client gui, was hard to develop. Mostly because my not so extensive experiense mising c++(non-managed) and c++(managed), with .net framework libraries.
Second was that not all windows xp machines were able to run the binaries, much less a BartPE WinXP Live CD, that I wanted to do some testing with. No compiler/linker tweaking could make it work, nor discard those non-needed libraries.
And finally, I couldn't run the program on Linux using wine, because the lack of .NET Framework 2.0.
After some searching for a C++ IDE, I stumbled upon Ultimate++ and TheIDE. Fiddling with it for a week made me discard VCEE, and move my project on to Upp.
What a great library you have!!!!. Just doing a little work to networking classes, using your network classes, and rebuilding the client gui. My program was running and compiling natively on windows and linux. And with a little changes on the Upp sources (might share with you if you're interested), I could make it run on then PocketPC platform!!, a feat my peers said would take much time and trouble  .
I'm very impressed with the Ultimate++ library, thank you very much.
niofis
PD. I would like sharing some findings: MinGW outputs code that is almost 40% faster than the one compiled with MSC. Windows MinGW vs Linux GCC speed comparison shows that the linux version is around 11% faster than the windows one.
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| Re: Ultimate++ for My Thesis [message #13627 is a reply to message #13622] |
Thu, 17 January 2008 22:17  |
niofis
Messages: 9
Registered: January 2008
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Promising Member |
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I've compiled using the optimise speed settings for both.
My application is very FP intensive (as is memory intensive too), because it calculates intersections between tree dimensional objects and rays to build the rendered output. All in single float poing precission.
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Also, if you application is FP heavy, maybe mingw has activated SSE 2 FP by default, while MSC stays with x87.
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I wasn't aware that mingw had SSE 2 optimizations by default, altough I knew MSC was using x87 after looking at the disassembly.
How can I enable those optimizations on MSC and or get better ones, on both?.
Anyway, I'm willing to help yo investigate further, because it's the kind of information I need to include on my paper. I was going to add the MinGW vs MSC speed test, but will need correction if it's found to be flawed.
niofis
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| Re: Ultimate++ for My Thesis [message #13642 is a reply to message #13632] |
Fri, 18 January 2008 16:40 |
niofis
Messages: 9
Registered: January 2008
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Promising Member |
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| luzr wrote on Thu, 17 January 2008 23:59 |
Thinking further, another possible explanation is STL - if you are using it a lot.. Starting with MSVC 2005, STL implementation is quite slow...
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Actually yes, I use the STL quite a lot, I need to change that and implement NTL. I guess that would bring a good performance enhacement. Hopefully on PocketPC too, that thing is awfully slow.
niofis
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