Unable to run Rosetta LoopModeling application

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- July 19, 2011 at 9:06 pm #983
  Anonymous
  I am a new Rosetta user trying to run the LoopModel application demo.
  but I get the following print out with the command line:’loopmodel.linuxgccrelease @flags -database’
  
  core.init: command: loopmodel.linuxgccrelease @flags -database
  core.init: ‘RNG device’ seed mode, using ‘/dev/urandom’, seed=-683210121 seed_offset=0 real_seed=-683210121
  core.init.random: RandomGenerator:init: Normal mode, seed=-683210121 RG_type=mt19937
  core.init: ROSETTA3_DB not defined
  protocols::loopbuild: ==== Loop protocol: =================================================
  protocols::loopbuild: remodel no
  protocols::loopbuild: intermedrelax no
  protocols::loopbuild: refine no
  protocols::loopbuild: relax no
  Warning: Unable to locate database file chemical/residue_type_sets/fa_standard
  
  ERROR: Unable to open file: ./chemical/residue_type_sets/fa_standard/residue_types.txt
  
  ERROR:: Exit from: src/core/chemical/ResidueTypeSet.cc line: 88
  loopmodel.linuxgccrelease: src/utility/exit.cc:119: void utility::exit(const std::string&, int, const std::string&, int): Assertion `false’ failed.
  Aborted
  
  My digging around tells me I may need to specify a database path, however I
  am unsure of what the path does for the program. 1) What must I do to get the
  demo to run? 2)Why is the database path need?
  I would really appreciate anyone’s help!
  -Brandon
- July 19, 2011 at 9:20 pm #5879
  Anonymous
  1) Well, yes, you need to give it the database path. When you got Rosetta, you either got it as a tarball that included a rosetta_database subfolder, or you had a link to the academic downloads site which has just the database as its own tarball. Find where you put that and pass the path to the database flag. If you put it at /home/myself/rosetta_database, then “-database /home/myself/rosetta_database” will do it. Make sure you have write access to wherever you put it; for some operations it generates binary versions of text files as a speed optimization; this requires you to be able to write the new version of the file.
  
  2) You need a database (path) because we avoided hard-coding energy function and chemical data into Rosetta. Rosetta’s code doesn’t know what alanine is, but it knows to read the database automatically, where it will find alanine when it needs it. Rosetta’s code doesn’t have the entire Dunbrack rotamer library coded in, it just reads those values from a database file if you need to to repacking.
- July 21, 2011 at 5:32 pm #5893
  Anonymous
  This solves my issue, thank you!
  -Brandon
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