Ah, yes: Some of these timers have been backported to NEST 2.14.1, but you should definitely upgrade to the newest version unless there’s a really, really good reason to use one that’s 5 years old and contains hundreds of unfixed bugs and problems that have been addressed meanwhile…

Cheers,
Jochen!

On 05.07.22 07:59, Jochen Martin Eppler wrote:

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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