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[Skyrunner]

You aren't using a profiler? :/

[Valid_Dark]

uhh... what's a profiler?

[Skyrunner]

It's a program that tells what functions in your program are using up the most CPU processing power. You can easily optimize the worst bottlenecks by seeing which function has the highest exclusive cycle time in percentages. For example, at() and size() were the top 40% for me, so I just optimized that and suddenly much faster.

Microsoft Visual Studio has a profiler bundled in it, or you could use some other profiler. If you're on Linux, you can use Valgrind.

[Valid_Dark]

ahh awesome thank you,
this was the sort of super secret optimization secret I was hoping to come across by asking that here.
will try it out tonight.

[MagmaMcFry]

By the way, Skyrunner, I seem to be unable to get my system past OpenGL 3.0, which would mean that I can't use the advanced OpenGL needed to render your erosion sim stuff nicely. Just for comparison: Per simulation tick and point, 3.0 needs to calculate and pass 256 bytes of data to the graphics engine, while 3.3 needs only 8 bytes (which is exactly the essential simulation data, the rest can be preloaded and/or GPU calculated using vertex shaders).

[Skyrunner]

I... don't get what you mean. o_O You can't make openGL 3.3 work on your machine?

And what's about the 256 bytes vs the 8 bytes?

[Mephisto]

It is relevant to post things relating to software development but not explicit requests for help, correct?

I'm pretty stoked about this evening. One of the local Python groups is having a bit of a geekfest with food and beer. I get to network with a bunch of programmers in a city where I know few people. I also get to listen to four teams do presentations on Django, Pyramid, Bottle, and Flask. Admittedly, I've only ever heard of Django. Should be interesting.

Each team (don't know why it's a team - each only has one member) was tasked with creating a todo app incorporating various functionality using a specific web framework. They were given a month, which is understandable as they all have jobs. I, in my joblessness, completed half of my own Rails version the night before the meetup. I should probably have the good grace to be embarrassed for what is likely going to be the worst code at the meetup, but I'm pleased I got it working in a framework I just started learning a few days ago. It's even MVC.

[Valid_Dark]

Thats cool Mephisto, I wish I could meet some local programmers.
And yeah, this thread isn't specifically for asking for heat.  There is another programming thread, THAT is the help thread, this thread doubles as one, but is normally more general programming stuff.

And thanks Skyrunner, got my shit optimized, now it's using between 0-2% instead of 9-10% CPU.

[Mephisto]

Check meetup.com - I found loads of groups for my area. There are probably at least a few near you if you're not in the middle of nowhere.

[Valid_Dark]

just checked, nothing really in my area.
Ohh well,  I'm going to be going back to college, (This time for computer Programming) starting in the Fall, so I should meet some programmers then.

[MagmaMcFry]

I... don't get what you mean. o_O You can't make openGL 3.3 work on your machine?

My laptop has 2 separate graphics cards, a dedicated gaming card supporting OpenGL 4.2 and a small energy-efficient one supporting 3.0. Since there is no stable Linux utility allowing me to access non-default cards, I can only access the 3.0 card from Linux at all. I guess I could try from Windows. By the way, since this needs to run on your computer too, what's your graphics card?

And what's about the 256 bytes vs the 8 bytes?

The 256 bytes are four vertex and four color coordinates for each of the four corners of a terrain quad and a water quad. Tons of avoidable redundancy there.
The 8 bytes are terrain height and water level of a map square.

[Skyrunner]

valid_dark: What was the bottleneck? O.o

magma: My PC is a Windows 7 x64, with a Radeon 6xxx. Not sure of the exact number. It's a year-ish old.

[MagmaMcFry]

magma: My PC is a Windows 7 x64, with a Radeon 6xxx. Not sure of the exact number. It's a year-ish old.

Looks like it supports OpenGL 4.0. Should be enough.

[Valid_Dark]

valid_dark: What was the bottleneck? O.o

You want to know what it was? you REALLY want to know what it was?
It was embarrassing, that's what it was.

[Siquo]

valid_dark: What was the bottleneck? O.o

You want to know what it was? you REALLY want to know what it was?
It was embarrassing, that's what it was.

Please share, we can learn from eachothers mistakes. Or at the very least get a hearty laugh out of em