Bug #2373
gmx -nice can't work
Description
In CommandLineModuleManager::Impl::processCommonOptions there's a hardcoded assumption that the gmx wrapper binary will only take no-argument options. Many of its options are booleans, but -nice takes an integer, which leads to
Command line:
gmx -nice 19
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Program: gmx, version 2018-rc1-dev-20180103-f826c0888-dirty
Source file: src/gromacs/commandline/cmdlineparser.cpp (line 279)
Function: void gmx::CommandLineParser::parse(int*, char**)
Error in user input:
Invalid command-line options
In command-line option -nice
Too few (valid) values
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
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History
#2 Updated by Erik Lindahl over 2 years ago
Short-term I would suggest we change it so it does not take any argument, but just runs at nice 19 if specified.
I see little reason to execute Gromacs at any nice level that is not 0 or 19 (well, maybe 19 would be useful for hardcore people ;)
#3 Updated by Teemu Murtola over 2 years ago
It is not clear from the issue description or the title, but, e.g., gmx mdrun -nice 19 should still work, and that is likely what everyone would intuitively use, so there is not much loss in functionality.
But adding 19 as a default value should also be trivial.
#4 Updated by Mark Abraham over 2 years ago
Teemu Murtola wrote:
It is not clear from the issue description or the title, but, e.g.,
gmx mdrun -nice 19should still work, and that is likely what everyone would intuitively use, so there is not much loss in functionality.But adding 19 as a default value should also be trivial.
I meant gmx -nice 19 mdrun can't work, which I thought should work, because gmx -h lists it as an available option. Longer term, several of those make sense to move to being available as default flags for tools (-h, -hidden, -nice) and not as flags to gmx itself, and some can be their own tool (-version, -copyright)