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[01:14:10] <andypugh> How portable is a .ko ? Is it possible to send a pre-compiled realtime module to someone?
[01:17:26] <cradek> it will run if they have the same kernel
[01:18:01] <cradek> be aware that distributing a binary gives you some additional responsibilities if it's compiled from gpl source
[01:18:14] <andypugh> Hmm
[01:18:56] <andypugh> Just trying to save folks the trouble of installing the development packages to compile/install a .comp module
[01:21:19] <andypugh> This looks quite promising, 70 lines of .comp. 53 lines of Python and I am generating a raster and streaming pixel values from a graphics file in realtime. (the 53 lines of python includes the image file import)
[01:23:55] <cradek> sweet
[01:24:12] <cradek> python sure comes with some lovely utility packages nowadays
[01:25:23] <andypugh> What I need now is some dude with a laser to test it :-)
[01:26:51] <cradek> nah, you need a laser for yourself, obviously
[01:27:15] <andypugh> Any thoughts on how big a shared-memory buffer can be? It looks like the default HAL one is 256k?
[01:28:00] <cradek> I know we've increased (doubled) it a couple of times. I don't know what it hurts if it's too big. I don't know those guts very well.
[01:29:16] <andypugh> I am trying to decide if I load the entire (monochrome) bitmap into shared-memory or if I use a buffer. (this is a separate shared-memory block from HAL)
[01:29:22] <cradek> "memlock", a kernel thing, is involved I think
[01:29:57] <andypugh> Actually, HAL is a rather random: used/total shared memory: 3000/262000
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[01:49:52] <cradek> I think a config with lots of pins (components) can really fill that up
[01:50:58] <cradek> used/total shared memory: 33440/262000
[01:51:19] <cradek> that's demo-sim-cl which invokes CL but doesn't do much of anything with it
[01:57:14] <andypugh> I am not concerned about filling up HAL memory, as I am creating a separate buffer. I am more concerned about what happens if you exceed physical memory, or some other limit.
[01:57:57] <andypugh> But perhaps I am living in the past. I have just found that 50k isn't enough for a moderately sized image.
[01:58:12] <andypugh> But then, I know that.
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[07:58:05] <mhaberler> cradek: re our brainstorming session: I'm struggling to verbalize the compelling argument for this rearrangement so it is immediately obvious where the key difference is to the current layout. "delaying offset/feed etc decisions" is a method, not the goal. I still have to find the formulation of the "this is it" argument - I dont doubt this will be an improvement, I'm trying to express it.
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