[Libmesh-users] Writing mesh in parallel

[robert <rob...@un...>]

Hello, 

My calculation consists of several parts. For each part the geometry
changes and I create a new mesh. I want to save the old mesh in a file
by: 
	new_equation_systems.write("../bgscratch/old_equation_systems.xdr");
new_mesh.write("../bgscratch/old_mesh.xdr");

If I run this code in serial there is no problem at all. However, if I
run it in parallel on a BlueGeneP using mpirun and a partition with 32
processors then, writing the equation system works fine but, writing the
mesh doesn't seem to work. For 

'new_mesh.write("../bgscratch/old_mesh.xdr");'

the  program gets stuck. There is no error and it doesn't abort, it just
seems to take quite a long time. In contrast, the 

new_equation_systems.write("../bgscratch/old_equation_systems.xdr");

takes some miliseconds. 
What am I doing wrong?

Thanks, 
Robert