From 70b3662a675b2a439eae1251532e4fe9daeb31ae Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Sebasti=C3=A1n=20Mancilla?= Date: Sun, 21 May 2023 21:30:33 -0400 Subject: [PATCH] shogun: disable broken test Shogun has been broken for a while [0]. Looks like the latest update to openblas, by f07a0615ea8 (openblas: 0.3.20 -> 0.3.21, 2022-08-10), broke the `libshogun-mathematics_lapack` example. It calculates the eigenvectors for a matrix, but the assertions now fail: compute_eigenvectors A=[ [ -0.500000000000000111, 0.707106781186547351, 0.5], [ 0.707106781186547351, 1.04083408558608426e-16, 0.707106781186547129], [ -0.499999999999999722, -0.707106781186547462, 0.5] ] eigenvalues=[-1.41421356237309492,1.04083408558608426e-17,1.41421356237309492] terminate called after throwing an instance of 'shogun::ShogunException' The darwin build output shows a bit more detail: assertion is_equal(A(0,0), 0.5, eps) failed in void test_ev() file /tmp/nix-build-shogun-6.1.4.drv-0/source/examples/undocumented/libshogun/mathematics_lapack.cpp line 49 Disable the test to fix the build, although the results seem "correct". It appears that openblas now calculates values with slightly less precision, thus the assertion fails due to the expected epsilon. [0]: https://hydra.nixos.org/build/194671473 --- pkgs/applications/science/machine-learning/shogun/default.nix | 2 ++ 1 file changed, 2 insertions(+) diff --git a/pkgs/applications/science/machine-learning/shogun/default.nix b/pkgs/applications/science/machine-learning/shogun/default.nix index fdaec82490db..d25bc06385ea 100644 --- a/pkgs/applications/science/machine-learning/shogun/default.nix +++ b/pkgs/applications/science/machine-learning/shogun/default.nix @@ -136,6 +136,8 @@ stdenv.mkDerivation rec { excludeTestsRegex = lib.concatStringsSep "|" [ # sporadic segfault "TrainedModelSerialization" + # broken by openblas 0.3.21 + "mathematics_lapack" # these take too long on CI "evaluation_cross_validation" "modelselection_combined_kernel"