Add options --ulimit und --parser-buffer-size configurable for qlever index command
#132
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February 4, 2025 02:25
hannahbast
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Feb 13, 2025
The command used by `qlever index` now looks like this: `ulimit -Sn <ulimit> && IndexBuilderMain ...` (so far, the `&&` was a `;`). The default `ulimit` for inputs larger than 10 GB has been reduced from 1048576 to 500000. NOTE: If the reason for a failure was a too large `ulimit`, see #132 Co-authored-by: Hannah Bast <[email protected]>
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So far, the
ulimitwas set to1048576when the size of the input files is larger than10 GB, which is a simplisitic and rough heuristic. In particular, this does not work when the RDF data is produced from the input file and the latter is relatively small compared to the former. Or when the OS allows increasing theulimitbut not that much. Now theulimitcan also be set explicitly via the option--ulimitof theqlever indexcommand, or via the variableULIMITin the[index]section of the Qleverfile.Further, ad-freiburg/qlever#1698 introduced an option
--parser-buffer-sizetoIndexBuilderMain, see there for the effect. This can now also be set explicitly via the option--parser-buffer-sizeof theqlever indexcommand, or via the variablePARSER_BUFFER_SIZEin the[index]Qleverfile.