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dev:regtesting [2015/11/18 09:37] – Add a note about -j in make test rivanvxdev:regtesting [2026/10/14 08:41] (current) – fstein
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 ====== CP2K Regression Testing ====== ====== CP2K Regression Testing ======
  
-CP2K comes with over 2500 test input files (located in [[src>cp2k/tests]]) which serve as both examples on how to use the many features in CP2K and also as a method for developers to test modifications and extensions to CP2K. In order to reduce the chance of bugs being introduced into the code, and ensure that all parts of the code are working, we recommend that : +This page has been moved to [[https://manual.cp2k.org/trunk/development/regtesting.html]]
-  * all developers complete a regression test before committing any changes to SVN. +
-  * all users complete a test before using a self-compiled binary for their projects +
- +
-==== Dashboard ==== +
-A number of regtests are run automatically by various members of our community. The results of these tests are collected centrally at the [[http://dashboard.cp2k.org | Dashboard ]]. If errors are detected, the developer responsible for the change should fix it immediately. The output logs provide the arch file used for these tests, which might suggest useful settings for that particular architecture. +
- +
-==== Code Coverage ==== +
-We aim that the regression test suite covers all the functionality of CP2K. For this purpose we regularly create [[http://www.cp2k.org/static/coverage/|Coverage Reports]] of the test-suite. If you see parts of the code which are not well tested, please contribute to improving coverage by writing new tests! +
- +
-===== How does it work? ===== +
- +
-The regression test suite is run using the [[src>cp2k/tools/regtesting/do_regtest | do_regtest]] script.  +
-It performs the following tasks: +
-   * update to the current SVN version (including new tests) +
-   * performs a realclean build of the source +
-   * executes a list of tests +
-   * compares the results (outputs) with those of the last known result (reference) +
-   * produces a summary +
- +
- +
-===== Running the regtests ===== +
- +
-==== Step 0: make based testing ==== +
- +
-  * If you are able to build and run cp2k on the local machine the easiest way is to start the regtesting by running ''make ARCH=... VERSION=... test'' +
-  * Be careful about the value of ''-j'' parameter you will use; running too many tests in parallel can make tests fail due to lack of system or GPU memory. +
-  * If this fails (e.g. on batch systems), continue with Step 1 else go to interpretation. +
- +
-==== Step 1: Preparation ==== +
-  * Decide on a directory for doing the regtest, there will be plenty of files in this dir (after a while) so make it something like ''$HOME/rt'' +
-  * Checkout a version of cp2k into ''$HOME/rt''. If you set up your svn account so that you don't need to provide a password for doing svn update, things will be more convenient later on. +
-  * Set up the arch files so that you can cleanly build cp2k (test this) +
- +
-==== Step 2: Running ==== +
-<code> +
-$ cp2k/tools/regtesting/do_regtest --help +
-Usage: do_regtest [OPTION] +
-Run the CP2K regression test suite +
-Example: do_regtest -c my_regtest.conf +
- +
-General: +
-  -h, -help, --help         print this help screen. +
-  -c, -config FILE          read any of the following configuration switches from FILE. +
-  -cp2kdir PATH             location of cp2k source tree relative to current working directory. +
- +
-Svn: +
-  -svndate DATE             checkout svn revision of given DATE. Default: use trunk. +
-  -nosvn                    do not run svn update. Default: off. +
-  -noemptycheck             run tests even when no changes in svn were made. Default: on. +
- +
-Build: +
-  -version VERSION          VERSION passed to make. Default: sopt. +
-  -arch ARCH                ARCH passed to make. Default: Linux-x86-64-gfortran. +
-  -quick                    rebuild if needed, but without realclean. Default: off. +
-  -nobuild                  do not build cp2k, rely on user's build. Default: off. +
- +
-Runtime: +
-  -mpiranks NRANKS          number of mpi-ranks. Default: 2 for parallel versions, 1 for serial. +
-  -ompthreads NTHREADS      number of OpenMP threads. Default: 2 for smp versions otherwise 1. +
-  -maxtasks NPROCS          total number of processor to use. Default: `nproc --all`. +
-  -jobmaxtime SECONDS       maximum execution time of a single test. Default 600. +
- +
-Testing: +
-  -noreset                  do not reset the reference outputs. Default: off. +
-  -skiptest                 do not run test, only svn update and build. Default: off. +
-  -skipdir TESTDIR          do not run tests in TESTDIR. This switch can repeated. +
-  -restrictdir TESTDIR      run only tests in TESTDIR. This switch can repeated. +
-  -retest                   run only tests in directories, which had failing tests in previous run. +
- +
-Exit codes: +
-    0   clean exit with testing +
-    1   problem with svn update +
-    3   problem with realclean +
-    4   build errors +
-    5   problem with retest option - no TEST directory with latest test results found +
-    6   problem with retest option - no error summary exists in the last TEST directory +
-    7   reference directory is locked +
-    8   ctrl-C (SIGINT) and various other signals trapped +
-  100   no svn changes since last run - clean exit without testing +
- +
-For more information visit: <http://cp2k.org/dev:regtesting> +
-</code> +
- +
-==== Step 3: Interpretation ==== +
-A test results can be any of the following: +
-^  Test Result         ^  Meaning | +
-| ''OK''               | if the results match those of a previous run precisely. The execution time is also given. | +
-| ''NEW''              | if they have not been executed previously. The reference result is generated automatically in this run. Tests can also be NEW if they have been reset, i.e. been newly added to the TEST_FILES_RESET files. | +
-| ''RUNTIME FAILURE''  | if they stopped unexpectedly (e.g. core dump, or stop) | +
-| ''WRONG RESULT''     | if they produce a result that deviates (even a tiny bit) from an old reference | +
- +
-The last two outcomes generally mean that a bug has been introduced, which requires investigation. +
-Since regtesting only yields information relative to a previously known result, it is most useful to do a regtest before and after you make changes. To allow per-test numerical difference higher than that set as a default, add third column in appropriate TEST_FILES file with a relative value of the difference. +
- +
- +
-===== Adding and Resetting Tests===== +
-The test-suite is fully controlled by the following files in the [[src>cp2k/tests]] directories +
- +
-^ File Name            ^ Content   | +
-| ''TEST_DIRS''        | is just a list of directories that contain tests. You can add your directory here. | +
-| ''TEST_FILES''       | the list of input files that need to be executed. You can add your file name here. Adding a comment about what it tests might help later debugging problems if a regtest fails | +
-| ''TEST_FILES_RESET'' | you can add files for which the reference output became invalid (e.g. bug fix) to this list of files. However be absolutely sure that the change is due to a bug fix, do not reset these that fail because of unclear reasons. Try to add a comment to the svn message and/or the file itself | +
-| ''TEST_TYPES''       | this file allows you to create a new test type. I.e. to specify for which words should be grepped and what field should be used in the numerical comparison. | +
- +
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