Dear Cong,

please have a look at https://nest-simulator.readthedocs.io/en/v3.3/guides/built-in_timers.html

Cheers,
Jochen!


On July 5, 2022 3:56:09 AM GMT+02:00, 512491013@qq.com wrote: 
Dear all, 
I used 10 PyNQ nodes to run SNN using mpirun, which is faster than a single node.
but I want to know how long each node takes to start MPI and wait for MPI_all_gether to end. 
Where do I need to print the time in the source code?Or what tools can I use to test MPI communication times?（my nest version is 2.14）

Best regards
Cong
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