Current Server Time: 02:31 (Central Europe)

#apertus IRC Channel Logs

2018/06/15

Timezone: UTC


02:11
rton
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04:58
Bertl_oO
off to bed now ... have a good one everyone!
04:58
Bertl_oO
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11:01
Bertl_zZ
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11:01
Bertl
morning folks!
11:11
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BAndiT1983
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16:06
se6astian
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BAndiT1983|away
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16:23
supragya
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16:25
supragya
hi BAndiT1983
16:26
supragya
I am facing a very "different" problem with mlvfs
16:26
supragya
Here:
16:26
supragya
https://imgur.com/a/3u26TtZ
16:26
supragya
My mlv were not working, so I used the sample files given on https://www.magiclantern.fm/forum/index.php?topic=11899.0
16:26
supragya
still, not accessible
16:27
supragya
tried both ranger and thunar, no luck... any ideas?
16:30
BogdanXOR
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16:32
TofuLynx
Hello
16:32
supragya
hi @ TofuLynx
16:32
TofuLynx
How are you? :)
16:32
supragya
I see too many commits in OC XD
16:33
supragya
I am good... facing a few issues with next stage of MLVFS and LUT in general
16:33
TofuLynx
Nice
16:33
TofuLynx
Hopefully it is resolved
16:33
TofuLynx
I have to benchmark OC now :)
16:33
supragya
nice
16:34
TofuLynx
and it's kinda boring xD
16:34
supragya
haha XD
16:34
supragya
I feel you.. I get bored sometimes too
16:34
TofuLynx
yeah
16:34
TofuLynx
and then I have to learn openMP yet
16:35
TofuLynx
it's strange in general
16:35
supragya
regarding eval 1, when will we find it we passed ?
16:35
TofuLynx
because it has got those kinda off "comments"
16:35
TofuLynx
I think it was day 20
16:35
supragya
openMP? no... it's good if you understand why it is the way it is
16:35
TofuLynx
Yeah, I have to understand
16:36
TofuLynx
Or probably today
16:36
TofuLynx
because they wouldnt let us continue GSoC if we failed
16:37
supragya
you wonder why openMP is that way? just read about MPI XD
16:37
TofuLynx
Not yet, I have to take a deep look into it yet
16:37
TofuLynx
Do you have experience with openMP?
16:38
supragya
had a course on it
16:38
TofuLynx
wow xD
16:38
supragya
parallel and distributive computing
16:38
supragya
openMP and CUDA are simple, I feel MPI is a bit tuff
16:39
supragya
since a lot is left to the developer to handle... many things go wrong... atleast it went for me
16:39
BAndiT1983
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16:40
supragya
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16:42
TofuLynx
MPI?
16:43
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BAndiT1983|away
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17:00
BogdanXOR
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17:00
BAndiT1983
hi supragya_, g3gg0 can answer it better, as he developed this stuff
17:00
rahul_
Well... CUDA specifically targets Nvedia GPU
17:00
rahul_
MPI is for cluster computing
17:02
rahul_
well OPENCL is perfect if you want to heterogenously use processor and FPGA ..and MPI suits best to exploit multicore nature of multicore-processor
17:03
TofuLynx
Hey BAndiT1983 :)
17:03
BogdanXOR
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17:04
BAndiT1983
hi TofuLynx
17:04
BAndiT1983
MPI is overkill for our cause
17:05
TofuLynx
I was implementing now a for loop to benchmark the algorithms
17:05
BAndiT1983
arrayfire tries to be a bridge between opencl, cuda etc.
17:05
BAndiT1983
very good, have you seen my commentsin lab chat?
17:05
TofuLynx
and the SHOODAK one is very funny when you run it 100 over the same data, as it displaces the pixels everytime
17:06
TofuLynx
Yes! I think I will resort to spreadsheets
17:06
TofuLynx
sent you an image of what happened
17:07
TofuLynx
By the way, I would like to make sure that I am running OC in release mode
17:09
BAndiT1983
i have already thought that shoodak will randomize pixels
17:09
BAndiT1983
but your output is rather strange, but very nice
17:10
BogdanXOR
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17:10
TofuLynx
Yeah :)
17:12
BAndiT1983
why is it jumping that much? my expecattion was random "noise" of pixels
17:12
BAndiT1983
but just with low offset
17:12
TofuLynx
Because SHOODAK not only does random noise, but also displaces the image channels
17:13
TofuLynx
accurately, it displaces half pixel per iteration
17:13
BogdanXOR
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17:14
TofuLynx
I will sent you an image explaning the displacing
17:15
TofuLynx
send*
17:16
TofuLynx
Sent. You can see it
17:16
TofuLynx
Basically, I store each white ring position into where the black arrow points
17:17
TofuLynx
so it displaces every pixel half pixel horizontally and vertically
17:17
TofuLynx
:)
17:18
BAndiT1983
but it offsets by 100-200 pixels in your result image
17:21
TofuLynx
It actually offsets by around 50 pixels horizontally and vertically
17:21
TofuLynx
However I noticed that this effect doesnt occur on red and blue channels
17:24
TofuLynx
BAndiT1983:
17:25
TofuLynx
Can you help me making sure that I am running this in release mode?
17:26
BAndiT1983
no proble, just do, if you are using command line -> cmake -DCMAKE_BUILD_TYPE=Release
17:26
BAndiT1983
or qtcreator -> projects -> variables
17:27
TofuLynx
Can you check on lab chatroom?
17:29
BAndiT1983
looks fine
17:29
TofuLynx
Ok :)
17:29
TofuLynx
On a first glance
17:32
TofuLynx
Bilinear takes around 52ms, GEDI takes around 71ms
17:32
TofuLynx
and SHOODAK takes 162ms
17:32
TofuLynx
SHOODAK is really slow
17:32
TofuLynx
but GEDI as to be significantly improved, to be used in real time video
17:33
TofuLynx
has*
17:34
BAndiT1983
don't worry, just add benchmarks, then i can take better look, as there are some places which can be optimized
17:34
TofuLynx
hopefully we can take it to under 20ms or less, so that 30fps should be possible at least
17:34
TofuLynx
sure :)
17:34
BAndiT1983
shoodak -> line 82 - 95
17:35
BAndiT1983
why does it check multiple times for dis(gen)?
17:35
BAndiT1983
it'S slowing down, and 3 if can be converted to 1
17:35
BAndiT1983
we can discuss it also via PM, if you want
17:36
TofuLynx
it has to be random for every check, However, I could use a single dis(gen) that uses every combination
17:37
BAndiT1983
alright, i should look after your benchmarks are available
17:37
TofuLynx
sure
17:37
BAndiT1983
have you activated clangcodemodel in qt, so it shows you warnings and potential errors? really helpful
17:37
TofuLynx
I dont know
17:38
TofuLynx
Also, do you want me to do a separate thing, like an unit test, for benchmarking, or can I benchmark under existing code? such as processing Presenter Show() method
17:39
TofuLynx
I will be right back, going to have a meal
17:40
BAndiT1983
enjoy your meal
17:40
BAndiT1983
you should do it in separate unit test
17:41
BAndiT1983
you can also use catch2 duration, if you add -d yes to OCTests in command line, for some general timing
18:35
TofuLynx
Back
18:35
TofuLynx
Ok! Will do it
18:39
BAndiT1983
pc froze totally
18:40
BAndiT1983
TofuLynx: will go for longer walk, so just as ususal, questions here or in lab chat
18:40
BAndiT1983
see you
18:40
TofuLynx
See you! :)
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BAndiT1983
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RexOrCine
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RexOrCine|away
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se6astian
off to bed
21:46
se6astian
good night
21:46
se6astian
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21:46
TofuLynx
Good night!
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