São Paulo City Updated 2025-07-16
Although Ciro Santilli lived in São Paulo City nominally during his studies, it would be more precise to say that he lived in University of São Paulo-land, because Ciro was cheap, didn't have a car, and did nothing but study, stay at home, go back to Santos to see his parents and the beach.
But the little he saw of the city made a deep impression on him.
The unreasonable size.
The unbearable contrasts.
Caetano's Sampa is the ultimate description of the city!
COCO 2017 Updated 2025-07-16
This is the one used on MLperf v2.1 ResNet, likely one of the most popular choices out there.
2017 challenge subset:
TODO didn't manage from source Ubuntu 22.04, their setup bitrotted way too fast... it's shameful even. Until I gave up and went for the magic Docker of + github.com/bbcmicrobit/micropython, and it bloody worked:
git clone https://github.com/bbcmicrobit/micropython
cd micropython
git checkout 7fc33d13b31a915cbe90dc5d515c6337b5fa1660
docker pull ghcr.io/carlosperate/microbit-toolchain:latest
docker run -v $(pwd):/home --rm ghcr.io/carlosperate/microbit-toolchain:latest yt target bbc-microbit-classic-gcc-nosd@https://github.com/lancaster-university/yotta-target-bbc-microbit-classic-gcc-nosd
docker run -v $(pwd):/home --rm ghcr.io/carlosperate/microbit-toolchain:latest make all

# Build one.
tools/makecombinedhex.py build/firmware.hex examples/counter.py -o build/counter.hex
cp build/counter.hex "/media/$USER/MICROBIT/"

# Build all.
for f in examples/*; do b="$(basename "$f")"; echo $b; tools/makecombinedhex.py build/firmware.hex "$f" -o "build/${b%.py}.hex"; done
The pre-Docker attempts:
sudo add-apt-repository -y ppa:team-gcc-arm-embedded
sudo apt update
sudo apt install gcc-arm-embedded
sudo apt install cmake ninja-build srecord libssl-dev

# Rust required for some Yotta component, OMG.
sudo snap install rustup
rustup default 1.64.0

python3 -m pip install yotta
The line:
sudo add-apt-repository -y ppa:team-gcc-arm-embedded
warns:
E: The repository 'https://ppa.launchpadcontent.net/team-gcc-arm-embedded/ppa/ubuntu jammy Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
and then the update/sudo apt-get install gcc-arm-embedded fails, bibliography:
Attempting to install Yotta:
sudo -H pip3 install yotta
or:
python3 -m pip install --user yotta
was failing with:
Exception: Version mismatch: this is the 'cffi' package version 1.15.1, located in '/tmp/pip-build-env-dinhie_9/overlay/local/lib/python3.10/dist-packages/cffi/api.py'.  When we import the top-level '_cffi_backend' extension module, we get version 1.15.0, located in '/usr/lib/python3/dist-packages/_cffi_backend.cpython-310-x86_64-linux-gnu.so'.  The two versions should be equal; check your installation.
Running:
python3 -m pip install --user cffi==1.15.1
did not help. Bibliography:
From a clean virtualenv, it appears to move further, and then fails at:
Building wheel for cmsis-pack-manager (pyproject.toml) ... error
error: [Errno 2] No such file or directory: 'cargo'
So we install Rust and try again, OMG:
sudo snap install rustup
rustup default stable
which at the time of writing was rustc 1.64.0, and then OMG, it worked!! We have the yt command.
However, it is still broken, e.g.:
git clone https://github.com/lancaster-university/microbit-samples
cd microbit-samples
git checkout 285f9acfb54fce2381339164b6fe5c1a7ebd39d5
cp source/examples/invaders/* source
yt clean
yt build
blows up:
annot import name 'soft_unicode' from 'markupsafe'
bibliography:
Microcontroller Updated 2025-07-16
As of 2020's, it is basically a cheap/slow/simple CPU used in embedded system applications.
Douhua Updated 2025-07-16
Freshly made douhua is a blessing.
Marketing Updated 2025-07-16
Zongzi Updated 2025-07-16
Eaten during Dragon Boat Festival, but can be bought year round.
Buy frozen. Pick the ones with meat and eggs!!! Boil.
Cost about 4 dollars for 2.
You can't eat them every day because too heavy, but they are so amazingly tasty!!!
Li sao (guqin song) Updated 2025-07-16
www.facebook.com/131402556881886/posts/655763214445815/ gives an origin:
Li Sao was composed by Cheng Kangshi in late Tang dynasty based on the poem Li Sao, authored by Qu Yuan (340-278 BC) in the Warring States period of ancient China.
The silkqin.com entry: www.silkqin.com/04qart/07sqmp/57ls.htm does not mention this however.
Video 1.
Li sao performed by Guan Pinghu
. Source. Track from Master Of Traditional Chinese Music: guqin
Video 2.
Lisao performed by NiniGuqin (2020)
Source.
Apoptosis Updated 2025-07-16
Power, Sex, Suicide by Nick Lane (2006) part 5 "Murder or suicide" mentions that apoptosis has two main functions:

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