Difference between revisions of "GEOS-Chem version numbering system"
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Revision as of 19:09, 14 June 2018
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Contents
GEOS-Chem alphanumeric version number system (now retired)
GEOS-Chem numeric version number system
In order to transition between the alphanumeric and numeric versioning systems, the upcoming GEOS-Chem release v11-02-final will also carry the version number 12.0.0.
In order to conform more closely to industry-standard software versioning protocol, we are introducing a new system for GEOS-Chem version labelling. This system is loosely based on Semantic Versioning.
Overview
We will retire the alphanumeric versioning system (e.g. v11-02a, v11-02b, v11-02c, ...) and instead using 3 numbers of form X.Y.Z, as described in the table below.
Digit | Description | When is this digit incremented? |
---|---|---|
X | Major version number.
|
X is incremented when we introduce an update that immediately breaks backward compatibility with the previous series of GEOS-Chem versions.
Examples:
|
Y | Benchmark number (aka feature number)
|
Y changes when a new set of features is validated with a 1-month benchmark.
NOTE: Any change to a GEOS-Chem run directory (that is, modifying input.geos, HEMCO_Config.rc, HISTORY.rc, etc.) necessitates that Y be incremented. |
Z | Bug fix number (aka patch number) | Z changes when the following types of updates are added to the code:
NOTE: All patched X.Y.Z versions of GEOS-Chem will remain compatible with the run directories from the last benchmarked version (X.Y.0). |
--Bob Yantosca (talk) 18:59, 14 June 2018 (UTC)
Example
The numeric versioning system is illustrated in the table below.
NOTE: The 12.Y.Z version numbers listed in the table below are just for the purposes of illustration. They do not correspond to actual versions that have been released.
Action | Resulting version # |
---|---|
The GEOS-Chem v11-02 major release is issued | v11-02-final, aka 12.0.0 |
A bug is fixed, but does not break backwards compatibility | 12.0.1 |
Several new features are added and tested with a 1-month benchmark | 12.1.0 |
Fixed a bug identified during the benchmark | 12.1.1 |
Fixed a second bug identified during the benchmark | 12.1.2 |
More new features are added and tested with a 1-month benchmark | 12.2.0 |
Fixed a bug identified during the benchmark | 12.2.1 |
...etc. | |
Issued "release candidate";
|
12.N.0 |
The next major version of GEOS-Chem is released | 13.0.0' |
--Bob Yantosca (talk) 18:59, 14 June 2018 (UTC)
Documentation
The GEOS-Chem manual will be rewritten for each "major" release X.0.0. But the GEOS-Chem wiki will be updated for each benchmark and patch version X.Y.Z. Since GEOS-Chem v11-01, much of the GEOS-Chem manual now points to information on the wiki. Therefore
GEOS-Chem users will no longer need to wait for a major release (X.0.0), but instead can download the most recent version (X.Y.Z) when starting a new research project.
--Bob Yantosca (talk) 18:59, 14 June 2018 (UTC)