cculianu
commented
2 years ago Hmm, I definitely could make a static binary or whatever for arm, but it would have to be arm64. Fulcrum requires a 64-bit OS, because it really REALLY would love to be able to address more than 4GB of memory if it needs to.
I actually recommend you go with Ubuntu for your Raspberry Pi, especially if your processor is 64-bit. I could build a Fulcrum binary and add it to the release for Ubuntu on RPi.
Unfortunately, Fulcrum just won't run on a 32-bit OS, due to the way it's designed.
What OS do you run?
craigraw
After writing https://www.sparrowwallet.com/docs/server-performance.html I was advised to look at Fulcrum as an alternative to ElectrumX. As I noted in the article, profiling ElectrumX's indexing behaviour shows that its single threaded approach does not scale on limited hardware. I am unsure how Fulcrum tackles this, but I'd like to try it.
The Raspberry Pi is probably the most common hardware used to run BTC nodes given the number of prebuilt node packages targeting it (Umbrel, Nodl, MyNode, Ronin Dojo etc). Currently these platforms all contain Electrs, which does not scale well with "deep" wallets.
As such I think it would be interesting to see if Fulcrum can be the "goldilocks" private Electrum server implementation - fast enough indexing, and with an inclusive index able to provide reasonable performance for deep wallets. Compiling Fulcrum for this platform seems daunting however: https://wiki.qt.io/RaspberryPi2EGLFS - has this been attempted? Is this a reasonable proposition? If so I would love to see a release binary targeting this architecture.