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nixos/paperless: set OMP_NUM_THREADS=1 by default

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Fixes https://github.com/NixOS/nixpkgs/issues/240591
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Atemu 2024-03-25 19:15:14 +01:00
parent b06025f153
commit 70fa188e17
1 changed files with 16 additions and 0 deletions
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16
nixos/modules/services/misc/paperless.nix
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@ -27,6 +27,8 @@ let
name = "paperless_ngx_nltk_data";
paths = pkg.nltkData;
};
} // optionalAttrs (cfg.openMPThreadingWorkaround) {
OMP_NUM_THREADS = "1";
} // (lib.mapAttrs (_: s:
if (lib.isAttrs s || lib.isList s) then builtins.toJSON s
else if lib.isBool s then lib.boolToString s
@ -199,6 +201,20 @@ in
};
package = mkPackageOption pkgs "paperless-ngx" { };
openMPThreadingWorkaround = mkEnableOption ''
a workaround for document classifier timeouts.
Paperless uses OpenBLAS via scikit-learn for document classification.
The default is to use threading for OpenMP but this would cause the
document classifier to spin on one core seemingly indefinitely if there
are large amounts of classes per classification; causing it to
effectively never complete due to running into timeouts.
This sets `OMP_NUM_THREADS` to `1` in order to mitigate the issue. See
https://github.com/NixOS/nixpkgs/issues/240591 for more information.
'' // mkOption { default = true; };
};
config = mkIf cfg.enable {