[Nek5000-users] outpost parallel error

[nek5000-users at lists.mcs.anl.gov]

Dear Neks,
in the usr file, after doing some manipulations on a known solution 
(loaded from file with load_fld(...)), I save the computed values with a 
call to outpost, like:
          call outpost2(u1(1,1,1,1),v1(1,1,1,1),
      &  w1(1,1,1,1),p1(1,1,1,1),
      &  p1(1,1,1,1),1,'arp')
While this is working correctly with 1 rank, in parallel it fails, 
returning only the error message:
schfile:/.../myrun.sch
then it hangs for a while, with all processes consuming all the cpu time 
until they are killed (so the .sch file is empty).
Does anybody have an idea on how this could be solved?
Best,
Giuseppe