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How much load can be served from 1m² of sunlight

medium.com
186 points·by forkfork·5 năm trước·138 comments

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forkfork
·3 năm trước·discuss
No specific experience with Oracle Cloud, but contract bullying on other products has led me to blacklist Oracle personally.
forkfork
·4 năm trước·discuss
The author is one of the most influential NFT critics: e.g. https://amp.smh.com.au/business/companies/extortion-why-web3...
forkfork
·4 năm trước·discuss
I work for a non-Heroku tech vendor, and I have always spoken highly of Heroku to my customers from my past experience of going all-in on Heroku, and receiving a top quality of support from Heroku back in 2017-2019. I'm going to point folks to the recent Hacker News threads now.

It is difficult for me to understand why Salesforce is not aware of the strength of the Heroku brand among experienced technology workers, and how much they have destroyed that brand in the last 2-3 years.
forkfork
·5 năm trước·discuss
The bottleneck is gunzipping & deserializing a huge JSON object using a very slow language (Node.js).

This was attempting to simulate the type of load I see in the wild, rather than serving "Hello world" using C++.
forkfork
·5 năm trước·discuss
Yep! Inefficient, but it is what I have, and there is no risk to frying my moderately expensive laptop which I hope to keep running for many years.
forkfork
·5 năm trước·discuss
Good point. There is: a HFC modem & 2x Google Wifi access points. Totals to about 15W of energy use - which only leaves enough energy budget for a Raspberry Pi.
forkfork
·5 năm trước·discuss
I’ll iterate towards a good solution. This was a somewhat realistic but naive solution (I have customers doing largely what I’ve described in the article).

If I could find a way to encourage people to run their work in a power efficient way using economies of scale from this series, I would be terribly happy.

Interestingly I suspect public-cloud FaaS solutions (e.g. AWS Lambda) will achieve highest utilisation rates due to high rate of CPU sharing - but I’m a long way off from showing that with data.
forkfork
·5 năm trước·discuss
I’ll try to measure this. I guess I need to purchase a shunt.
forkfork
·5 năm trước·discuss
Mostly clouds and rain bring this down to 600Wh/day. Washed the bird poo off the panel to get an extra 2 watts.
forkfork
·5 năm trước·discuss
Author here - I’m learning as I go. I thought of talking a out the actual sunlight starting at closer to 1300W and losing efficiency at each step, but I don’t get have the right tools to do that properly.

I’d def love to hear your suggestions though as I continue to iterate this one.
forkfork
·5 năm trước·discuss
Intentionally inefficient. I’ve seen a number of my customers doing this pattern, working with ~10 meg JSON for the model layer.

Inefficient but not unrealistic outside of FAANG.
forkfork
·5 năm trước·discuss
3 hours comes from averaging the daily power generation my Victron MPPT reports. I’m using a 200 watt panel and it reports and average of 600Wh since I set it up a month ago.
forkfork
·5 năm trước·discuss
Author here, you are correct, not tuned.

Will try your suggestions! Much appreciated.