Compare Build Specs

lib/scripts/diffBuildSpecs.py

Compare two experiment build specs (dependence graphs with versions of dependencies), generated by Spack for specified packages+options. This script enables the user to compare packages and versions of two spack builds. Given two yaml package specs (use spack spec --yaml), the script outputs which components of the packages are different.

Note

If you are trying to compare benchpark benchmarks, try using diffExperimentBuilds.py.

Example: dray with/without MPI

In this example, we see the difference of dray built with and without mpi. The difference between the specs dray+mpi and dray~mpi is indicated in the output by -> [openmpi] and the console output highlights the package differences in red.

$ spack spec --yaml dray+mpi > dray-mpi.yaml
$ spack spec --yaml dray~mpi > dray-nompi.yaml
$ spack-python lib/scripts/diffBuildSpecs.py ./dray-mpi.yaml ./dray-nompi.yaml

(Image output is truncated)

Note

spack-python is required to import the spack libraries needed for this script. It will automatically be added to your $PATH when you run benchpark setup ....

Example: Installed packages

If you want to compare already installed packages, provide the hashes

$ spack find -L quicksilver

-- linux-rhel8-sapphirerapids / gcc@12.1.1 ----------------------
fubnce7wzgjxhkim2cylijt4cbpfhxi6 quicksilver@master

-- linux-rhel8-sapphirerapids / intel@2021.6.0-classic ----------
qwev4yodp2joikf2oxvlo224ksjcqve3 quicksilver@master
==> 2 installed packages

$ spack-python lib/scripts/diffBuildSpecs.py quicksilver/fubnce7wzgjxhkim2cylijt4cbpfhxi6 quicksilver/qwev4yodp2joikf2oxvlo224ksjcqve3