Re: [myrinet] Re: mpid/ch_gm/smppriv.c (version 1.2..3) smpi_init() changes

Patrick Geoffray <[email protected]> writes:

> > permissions vulnerability (the file's mode is 0777), but the file will disappear
> > from view quite quickly. If the file is still left around because of some system
> > problem, then the next processes that come along can open the file...without
> 
> That's very elegant and it cleans up nicely the shared memory file
> if/when the application crashs. 

Ideally this would be combined with code that insures that that each
shared memory file has a unique name.  Myricom has a patch for
mpirun.ch_gm that includes the pid in the file name to make it more
unique, and one for smppriv.c that unlinks it after it is closed, but
from what I understand they are looking into a better solution.  This
was a month or so ago, and I'm unsure what they have come up with
since then.