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| 02:02 | Bertl | off to bed now ... have a good one everyone!
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| 11:24 | Bertl | morning folks!
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| 15:59 | se6ast1an | MEETING TIME
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| 15:59 | se6ast1an | who is here?
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| 16:00 | Bertl | is here ...
| | 16:02 | se6ast1an | seems it will be another rather short meeting then :)
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| 16:02 | se6ast1an | BAndiT1983: you wanna give us a brief update of the stuff you are currently working on?
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| 16:04 | se6ast1an | ok superbrief updates from me:
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| 16:04 | BAndiT1983 | not much to tell, sorry, just resumed investigating the gerber problem
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| 16:04 | se6ast1an | preetimenghwanis text for the website article is still in the review/rework process
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| 16:05 | se6ast1an | I continue to work on the prober accuracy issues, new textpattern that Bertl created was printed today and will be installed this evening
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| 16:05 | se6ast1an | I did also print on mm paper and noticed that the print dimensions are not 100% accurate, will report with actual images once the pattern is installed
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| 16:06 | Bertl | so the printer is skewing the image?
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| 16:07 | se6ast1an | over the 150mm length the grid missaligns by around 0.5mm or so
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| 16:07 | se6ast1an | more details follow with images then
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| 16:07 | Bertl | but it is a scaling issue, not some kind of distortion?
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| 16:07 | se6ast1an | yes
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| 16:07 | Bertl | okay, that's fine then
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| 16:08 | se6ast1an | printed at 100% (no scaling) and its like ~100.5% for real
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| 16:09 | se6ast1an | contacted more flying probe service providers to get an understanding of what this costs in europe
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| 16:09 | se6ast1an | thats it from my side
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| 16:10 | se6ast1an | do you also have news for us Bertl?
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| 16:10 | Bertl | a few, but not much
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| 16:11 | Bertl | as you already mentioned, new test pattern for the prober have been created
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| 16:11 | Bertl | I also investigated the cmv_snap3 performance when writing images
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| 16:12 | Bertl | when we visited the observatory (vup, anu3jn and I) we had a discussion about the 'long time' it takes to transfer a captured image over ethernet
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| 16:13 | Bertl | and that this is probably a problem with the inefficient data conversion (repacking from the memory layout to the output image)
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| 16:13 | Bertl | so I did some tests and looked into it a litte further
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| 16:14 | Bertl | basically a dummy output of an image sized data block takes 34ms
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| 16:15 | Bertl | the current implementation (repacking) takes about 430ms
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| 16:16 | Bertl | and transferring the dummy data over network (via ssh) takes about 1.68s
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| 16:17 | Bertl | we transfer 18MByte over a 1Gbit connection
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| 16:18 | Bertl | assuming we get half that bandwidth (500Mbit) we should be able to transfer the data in about 290ms)
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| 16:18 | Bertl | so my conclusion so far is that the overhead of ssh is quite significant here and we probably should consider some alternatives
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| 16:19 | Bertl | I also looked into using SIMD instructions (NEON) for the repacking
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| 16:20 | Bertl | but given that the current implementation does take about the same time the network transfer would, it is questionable if that will speed things up significantly
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| 16:20 | Bertl | but anyway, I'll investigate this a little further
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| 16:20 | se6ast1an | sounds good
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| 16:20 | Bertl | that's it from my side for this week
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| 16:20 | se6ast1an | any news from the ultra96-adapter PCB?
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| 16:20 | se6ast1an | or what else are you currently working or or planning to work on?
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| 16:21 | Bertl | no PCB work this week
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| 16:25 | se6ast1an | or what else are you currently working or or planning to work on?
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| 16:27 | Bertl | not sure what the question is aiming at?
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| 16:30 | se6ast1an | next steps
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| 16:31 | Bertl | well, as soon as the power board PCBs are tested, I plan to assemble them
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| 16:31 | Bertl | I also plan to design the ultra96 interface board
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| 16:32 | se6ast1an | great
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| 16:32 | se6ast1an | the mini dp adapters for the ultra96 are still on hold because of the male minidp connector part not being available right?
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| 16:33 | se6ast1an | as SMD/SMT part
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| 16:33 | Bertl | I think for a test we will go for a cable there
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| 16:33 | Bertl | it is not the best solution, but it is definitely better than hunting for exotic parts
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| 16:34 | se6ast1an | so you cut a minidp cable and solder the wires to the test PCB I assume?
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| 16:34 | Bertl | nah, that would be very bad
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| 16:34 | se6ast1an | would reduce speed but still show if it works in general?
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| 16:35 | Bertl | we will put a minidp receptacle on the breakout and use a minidp cable
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| 16:35 | se6ast1an | ah, right
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| 16:36 | BAndiT1983 | changed nick to: BAndiT1983|away
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| 16:37 | se6ast1an | ok, anyone else with topics for the meeting?
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| 16:38 | se6ast1an | MEETING CONCLUDED THEN!
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| 16:48 | BAndiT1983|away | changed nick to: BAndiT1983
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