xenial (1) DBsplit.1.gz

NAME

       DBsplit - divide a Dazzler database into a series of blocks

SYNOPSIS

       DBsplit [-a] [-xint] [-sint(200)] path:db|dam

DESCRIPTION

       Divide  the database path.db or path.dam conceptually into a series of blocks referable to on the command
       line as path.1, path.2, ...  If the -x option is set then all  reads  less  than  the  given  length  are
       ignored,  and  if  the -a option is not set then secondary reads from a given well are also ignored.  The
       remaining reads, constituting what we call the trimmed DB, are split amongst  the  blocks  so  that  each
       block  is  of  size  -s  * 1Mbp  except  for the last which necessarily contains a smaller residual.  The
       default value for -s is 200Mbp  because  blocks  of  this  size  can  be  compared  by  our  "overlapper"
       daligner(1)  in  roughly  16Gb of memory.  The blocks are very space efficient in that their sub-index of
       the master .idx is computed on the fly when loaded, and the .bps and .qvs files (if a .db) of base  pairs
       and  quality  values,  respectively,  is  shared  with  the  master  DB.  Any relevant portions of tracks
       associated with the DB are also computed on the fly when loading a database block.

SEE ALSO

       daligner(1)