76 lines
4.6 KiB
Plaintext
76 lines
4.6 KiB
Plaintext
[video member=miotatsu stream_platform=twitch project=riscy title="Dhrystone" vod_platform=youtube id=WtusQ-7fTgQ annotator=Miblo]
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[0:08][Recap and set the stage for the day]
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[0:52][Consult @Croepha's forum post 'Learning about circuits'[ref
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site="RISCY BUSINESS"
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page="Learning about circuits"
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url=https://riscy.handmade.network/forums/t/2505-learning_about_circuits]]
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[2:14][Try to model a single LED in the Falstad Circuit Simulator[ref
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site=Falstad
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page="Circuit Simulator Applet"
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url=http://www.falstad.com/circuit/] in conjunction with the HiFive1 Schematics[ref
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site=SiFve
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page="HiFive1 Schematics"
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url=https://www.sifive.com/documentation/boards/hifive1/hifive1-schematics/]][:circuitry :peripheral]
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[4:33][Let @Croepha know of his citation in the Big RISCY BUSINESS Question Thread[ref
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site="SiFive Forums"
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page="The Big RISCY BUSINESS Question Thread"
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url=https://forums.sifive.com/t/the-big-riscy-business-question-thread/531]]
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[5:25][@croepha][Under draw there is 1 terminal voltage source and a ground][:circuitry]
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[5:39][Continue modeling an LED[ref
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site=Falstad
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page="Circuit Simulator Applet"
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url=http://www.falstad.com/circuit/][ref
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site="SiFive Forums"
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page="The Big RISCY BUSINESS Question Thread"
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url=https://forums.sifive.com/t/the-big-riscy-business-question-thread/531]][:circuitry :peripheral]
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[9:06][Consult the further replies to 'Learning about circuits'[ref
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site="RISCY BUSINESS"
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page="Learning about circuits"
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url=https://riscy.handmade.network/forums/t/2505-learning_about_circuits]]
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[9:41][@croephas][The ground in your simulation is simplified, but is effectively what you have when you have OE=1 and XOR=1]
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[10:15][Determine to check out other demos and update the Freedom E SDK]
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[11:10][Embark on studying the Dhrystone demo, in dhry.h][:profiling :research]
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[16:24][Refresh our memory on how to build and upload to the HiFive1[ref
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site="SiFive Developers"
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page="SiFive HiFive1 Getting Started Guide"
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url=https://static.dev.sifive.com/dev-kits/hifive1/hifive1-getting-started-v1.0.2.pdf]][:research]
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[19:15][Build the Dhrystone demo and upload it to the HiFive1]
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[20:45][:Run the Dhrystone Benchmark, Version 2.1]
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[21:48][Start to read dhry_1.c while the Dhrystone Benchmark (presumably) crunches away in the background][:research]
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[23:15][Consult the output of the Dhrystone Benchmark]
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[24:43][@croepha][Alright take care, I have to run. Thanks for streaming]
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[24:48][Continue consulting the Dhrystone output and scan the SiFive forums for information on the benchmark][:profiling :research]
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[26:20][Consult ARM,[ref
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site=ARM
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page="Dhrystone and MIPs performance of ARM processors"
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url=http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka3885.html] Wikipedia[ref
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site=Wikipedia
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page=Dhrystone
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url=https://en.wikipedia.org/wiki/Dhrystone] and Roy Longbotom's PC Benchmark Collection[ref
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site="Roy Longbotom's PC Benchmark Collection"
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page="Dhrystone Benchmark Results On PCs"
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url="http://www.roylongbottom.org.uk/dhrystone results.htm"] for some pointers towards interpreting the Dhrystone benchmark][:profiling :research]
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[30:21][Continue studying dhry_1.c][:profiling :research]
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[40:25][Express interest in seeing the code generation for working with floating point]
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[41:37][Continue studying dhry_1.c from main()][:profiling :research]
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[46:19][Note that this is very non-descriptive code]
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[47:18][Continue reading the initialisation code in dhry_1.c][:profiling :research]
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[48:38][Read the :timing code in dhry_1.c][:profiling :research]
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[49:47][Consult the internet for 1-indexed programming languages[ref
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site=Wikipedia
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page="Comparison of programming languages (array)"
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url=https://en.wikipedia.org/wiki/Comparison_of_programming_languages_(array)#Array_system_cross-reference_list]][:language]
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[52:44][Continue reading the :timing code in dhry_1.c][:profiling :research]
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[56:54][Read the interpretation and printing code in dhry_1.c][:profiling :research]
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[58:42][Read through the procedures in dhry_1.c][:profiling :research]
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[59:24][Scan through the remaining files in the Dhrystone demo][:profiling :research]
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[1:01:14][Read time() in dhry_stubs.c][:profiling :research]
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[1:01:53][Scan through dhry.h and Makefile to find that we are using -DTIME as the :timing method]
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[1:02:52][That's everything, with thoughts that this demo is uninteresting]
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[1:03:46][Shout-out to Jeff Roberts' printf[ref
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site=GitHub
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page="stb/stb_sprintf.h"
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url=https://github.com/nothings/stb/blob/master/stb_sprintf.h]]
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[1:04:58][Glimpse into the future of what we may try and glean from this Dhrystone demo]
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[/video]
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