Alpha 1.4
1. Compiling and execution now detect AES-NI, or a lack of it, and fall back to a software AES implementation. This adds support for Raspberry Pi 4, related ARM processors and Celeron processors.
2. Added install instructions for CentOS/RHEL 8.1. Thanks to @A-Caccese for fixes to Windows WSL instructions.
3. Due to changes to the sqlite database that are not backwards compatible so re-synch will be required. Loading the blockchain only loads headers into memory instead of header blocks (header + proofs), speeds up the startup, and reduces normal operation memory usage by 80%. Memory access is now synchronous to reduce use of locks and speed up block processing.
4. Chia fullnode, farmer and harvester now default to logging to chia.log in the chia-blockchain directory. This is configured in config.yaml and due to config.yaml changes it is recommended to edit the new template config instead of using older config.yaml’s from previous versions.
5. Plotting working directory and final directory can both be specified in config.yaml
6. uvloop is now an optional add on.
7. Plotting now logs a timestamp at each major step. Thanks @dkackman who also fixed some compiler warnings. Additionally harvester/farmer will not try to farm plots that they don’t have the key for.
8. Added support for Python 3.8.
In "Each line that starts with `pip ...` becomes `python -m pip ...`" changed "python -m pip" with "python3.7 -m pip" (paragraph "Alternate method for Ubuntu 18.04 LTS"). The command "python -m pip" calls the wrong version of python.
* New database table to store headers
* Loading blockchain only loads headers into memory instead of header blocks (header + proofs), speeds up the startup, and reduces normal operation memory usage by 80%
* Fix deadlock issues with store class
* Make memory store access synchronous, to reduce use of locks, this improves performance of block and unfinished block processing
* Remove locks from reads of DB, only lock for writes
* Cleaner configuration system with argparse
* Log to file by default, configurable to stdout
* Proof of space binary and create_plots scripts allow passing in temp and final directories
Alpha 1.3
FullNode performance improvements - Syncing up to the blockchain by importing all blocks is faster due to improvements in VDF verification speed and multithreading block verification. Also fixed a bug where the node may not sync if it restarts close to a tip.
VDF improvements - VDF verification and generation speed has increased and dependence on flint2 has been removed. We wish to thank Dr. William Hart (@wbhart) for dual licensing parts of his contributions in [FLINT](http://www.flintlib.org/) and [Antic](https://github.com/wbhart/antic) for inclusion in the Chia blockchain.
Implemented an RPC interface with JSON serialization for streamables - currently on port 8555 - and moved the ssh UI to use RPC.
Mongodb deprecated. Moved to [SQLite](https://www.sqlite.org/) for the blockchain database. This will require nodes to re-sync with the network. Luckily this is now faster.
Changed the displayed process names for harvester, farmer, fullnode, timelords, and VDFs to to chia_full node, chia_harvester, etc. Fixed a bug that could cause inadvertent shutdown of other processes like an ongoing plotting session when new chia services were started.
Added details on how to contribute in CONTRIBUTING.md. Thanks @RichardLitt. Also moved documentation from inside the repository to the [wiki](https://github.com/Chia-Network/chia-blockchain/wiki).
Added color logging and now chia_harvester will periodically announce which plots it is currently farming and their k sizes.
Fixed a typo in the UI. Hat tip to @lvcivs for the pr.
Clarified the minimum version of boost required to build timelord/VDFs. Hat tip @AdrianScott
Lots of smaller bug and documentation fixes.
C PoT improvements, partly using modified code from Flint/Antic
On Mon, Jan 13, 2020 at 11:03 PM Bill Hart <goodwillhart[at sign]googlemail.com> wrote:
Dear Bram Cohen,
I cannot relicense all of Flint and Antic as I don't own the copyright for all files.
However, I wrote the files you mention and therefore you can also use them under BSD 2-Clause. In addition, I hereby license you to use these files under the MIT license for your project. Please ensure that my copyright is retained on the files, as per the MIT license.
Best Wishes,
William Hart.
On Tue, 14 Jan 2020 at 01:10, Bram Cohen <bram[at sign]chia.net> wrote:
Hello Dr. Hart. As you likely already know in Chia's VDF implementation competition Antic and Flint were able to produce meaningful
improvements in how fast our VDF runs. We're now working on integrating those changes and making further improvements which we'd like
to upstream but we're having some licensing issues.
On all of Chia's code we use MIT, Apache2 and public domain. If you're willing to relicense using one of those or even relicense just the
following files that would be very helpful
https://github.com/wbhart/antic/blob/trunk/qfb/nudupl.chttps://github.com/wbhart/antic/commits/trunk/qfb/nucomp.chttps://github.com/wbhart/flint2/blob/trunk/fmpz/xgcd_partial.c
Please let me know what you think.
Thank you,
-Bram
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