snakemake 执行作业的条件是什么？

Question

我想知道 snakemake 决定需要执行一项工作所需的所有必要条件，但我在 their documentation 中找不到它们。我找到的最好的来源是snakemake作者的slides from 2016，上面写着：

A job is executed if and only if

- output file is target and does not exist
- output file needed by another executed job and does not exist
- input file newer than output file
- input file will be updated by other job
- execution is enforced

但从那以后他似乎不再使用那张幻灯片，这让我想知道上述标准现在是否已经改变。

Answer 1

他们文档的这一页有一个指向 2019 年幻灯片的链接：https://snakemake.readthedocs.io/en/stable/tutorial/tutorial.html。在幻灯片的第 26 页上，您可能会看到相同的规则集：https://slides.com/johanneskoester/snakemake-tutorial#/25:

Job execution
A job is executed if and only if

- output file is target and does not exist
- output file needed by another executed job and does not exist
- input file newer than output file
- input file will be updated by other job
- execution is enforced

determined via breadth-first-search on DAG of jobs

我猜这些规则自 2019 年以来没有任何变化，尤其是考虑到此演示文稿是从官方教程页面引用的。