[sparta-users] read_restart with very large files

[Cosimo L. <cos...@as...>]

Dear community,

I am working with very large simulations (20e9 particles), and due to the large simulation time I wanted to save restart files to split the simulation in smaller parts.

The problem is that my restart files have a size of 1.9 TB, and when I try to read them I get the following output and error:

"
SPARTA (7 Jan 2022)
Reading restart file ...
  restart file = 7 Jan 2022, SPARTA = 7 Jan 2022
  orthogonal box = (0 0 0) to (0.184 0.102 0.03)
ERROR on proc 0: Restart file read buffer too large, use global mem/limit (../read_restart.cpp:198)
"

Following the error suggestion, I have tried to use the global mem/limit instruction before reading the restart, but the output does not change and I still get the same error.

The relevant lines in the input file are:

"
global                   mem/limit 1800
read_restart        after_warmup.restart
"

I am running SPARTA (7 Jan 2022) release compiled with BIGBIG flag

There is a way to restart such large simulations?

Thank you in advance for you invaluable help and support,

Cosimo Livi
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