IRC log for #brlcad on 20161208

05:31.23 *** join/#brlcad infobot (ibot@rikers.org)
05:31.23 *** topic/#brlcad is BRL-CAD is participating in GCI 2016! BRL-CAD 7.26.0 is latest, 7.26.2 coming in December. || HELP NEEDED: review, categorize 700+ previous GCI tasks: http://brlcad.org/gci/data/
05:41.12 *** join/#brlcad infobot (ibot@rikers.org)
05:41.12 *** topic/#brlcad is BRL-CAD is participating in GCI 2016! BRL-CAD 7.26.0 is latest, 7.26.2 coming in December. || HELP NEEDED: review, categorize 700+ previous GCI tasks: http://brlcad.org/gci/data/
05:51.40 nihar brlcad Should every completed GCI task (2012-2016) have a documented pdf file?
05:54.02 *** join/#brlcad infobot (ibot@rikers.org)
05:54.03 *** topic/#brlcad is BRL-CAD is participating in GCI 2016! BRL-CAD 7.26.0 is latest, 7.26.2 coming in December. || HELP NEEDED: review, categorize 700+ previous GCI tasks: http://brlcad.org/gci/data/
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07:54.12 Aprtm I didn't understand the task convert a single function from c to opencl...what do we need to do?
08:10.22 caen23_ Aprtm: link to task?
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09:46.54 Notify 03BRL-CAD Wiki:Troyanthony * 0 /wiki/User:Troyanthony:
09:51.38 *** join/#brlcad Stragus (~alexis@modemcable090.29-19-135.mc.videotron.ca)
10:25.26 *** join/#brlcad Lord_of_Codes (~Lord_of_C@122.163.195.246)
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11:10.53 Aprtm caen23_ https://codein.withgoogle.com/tasks/5116035485138944/?sp-organization=4814441002565632&sp-is_beginner=False&sp-categories=1
11:10.55 gcibot Convert a single function from C to OpenCL (hyperboloid) || 3 days || Code || BRL-CAD
11:11.13 Aprtm Sorry for replying late
11:18.00 *** join/#brlcad amarjeet (~Amarjeet@2405:205:418d:6df:9d19:bd60:6fe1:a965)
11:39.46 Stragus Aprtm: Learn the basics of OpenCL, write the function in a way that's friendly to GPU parallelism, and test it
11:41.14 Stragus I'm not a mentor, but I can help with any question regarding writing good GPU code
11:43.46 Stragus At first glance, the data memory layout and branching would have to be modified (to get good performance)
11:46.52 *** join/#brlcad Lord_of_Codes (~Lord_of_C@122.163.195.246)
11:47.46 Stragus Gah, I was looking at the OpenCL code sample rather than the C. brlcad, that's some very slow code
11:50.29 Stragus Parallel memory loads/stores have a large stride, they aren't coalesced or packed, there are local memory writes through that hitp pointer, branches should be minimized to improve parallelism (call do_segp() only once with the swapped arguments, not twice)
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13:03.21 Aprtm caen23, could you just take a look at my submitted task?
13:09.37 *** join/#brlcad kintel (~kintel@unaffiliated/kintel)
13:12.24 caen23_ Aprtm: sorry, i can't really evaluate design tasks, i don't know what to look for
13:18.28 Aprtm ohk :) never mind
13:24.04 *** join/#brlcad sajarin (ac6254b6@gateway/web/freenode/ip.172.98.84.182)
13:26.11 sajarin hey guys, looking to get some feedback on the submission I made to a task for GCI. I apologize in advance for any inconvenience. I would be extremely grateful for any feedback.
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16:58.11 Notify 03BRL-CAD:starseeker * 69258 brlcad/trunk/src/libbu/CMakeLists.txt: Add regex include dir to CMakeLists.txt for libbu
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17:07.33 Notify 03BRL-CAD:starseeker * 69259 (brlcad/branches/qtged/BUGS brlcad/branches/qtged/CHANGES and 77 others): Sync with trunk thru r69258
17:18.08 Notify 03BRL-CAD:starseeker * 69260 (brlcad/branches/tcltk86/BUGS brlcad/branches/tcltk86/CHANGES and 77 others): Sync with trunk thru r69258
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23:12.44 ries Any BRLCad mentor alive here ?
23:13.14 ries …or Admin :)
23:20.59 ries checks time ...
23:27.00 ries off to bed

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