[mcstas-users] MCPL files and mpi

Huegle, Thomas hueglet at ornl.gov
Thu Nov 7 17:34:10 CET 2019

Dear all,

I am trying out using MCPL files as input into simulations right now:

COMPONENT sourceMCPL = MCPL_input( filename="/data/source.mcpl" )
                AT (0, 0, 0) RELATIVE Origin

When I run the simulation using simply "mcrun mcpltester.instr", it takes about half an hour (the MCPL file in question is 24GB).
However, when I try to use mpi ("mcrun -c --mpi=10 mcpltester.instr"), it takes something closer to 50 minutes. The problem seems to get worse (predicted run time for mpi=64: ~17 hours).

Is there a way around it? Some special way of compiling perhaps?

Thank you very much!

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman2.mcstas.org/pipermail/mcstas-users/attachments/20191107/8731f694/attachment-0001.html>

More information about the mcstas-users mailing list