[aspect-devel] Checkpoint I/O access

Rene Gassmoeller rengas at gfz-potsdam.de
Fri Apr 24 05:05:09 PDT 2015

Ok thanks a lot,
yes, the ASPECT part is usually on the order of 1 Mb for our current
models, while the mesh and solution reaches 10 GB. I will check if p4est
was configured with MPI I/O for our installation.

> Solution vectors and the mesh are saved by p4est. It is all dumped
> into one big file with every processor writing into it (with MPI I/O
> if configured with it). You can look at the p4est load() and save()
> routines. When saving/loading, they seek to their relevant section in
> the file and write/read.
> Then there is the status of ASPECT itself, which is serialized and
> dumped out. The amount of data should be small though.

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