A fault reported when I try to using barostatting methods in a parrallel job

three things:

a) always copy the lammps mailing list on your replies.
    i won't answer to requests otherwise unless the question
    concerns me personally. this way people can see the
    resolution of your problem and in the future lammps users
    can find it in the mailing list archive
b) i cannot reproduce a segfault with the input in parallel.
    can you give more details on how you are running this
    input and across how many processors.
c) please always report which version of lammps you are using.
    bug reports will only be taken seriously when they can be
    reproduced with the latest version.