Load balancing compset FAMIPC5

[Shreya Bhowmick]

Hello everyone,

I am a research scholar and I have ported CESM 1.2.2 to a Linux server with 2 CPUs(or sockets) each having 12 cores, 2 threads per core i.e. 48 processes. I performed the ERS test on compset FAMIPC5 (TestStatus: PASS) and got a throughput of 0.29 myear/wday. I am still using the default env_mach_pes.xml file. I am a novice and do not have the support of a system administrator. I have read the user guide. I can understand the ccsm timing profile but not the driver timing flowchart and cpl.log file. Can anyone suggest how can I increase the throughput? I have attached the necessary files.

Thank you for your time,
Shreya

 

[jedwards]

Shreya,

For an F case you can just increase the task count of all tasks, up to the limit of the atm component. For F09 that is around 1200 tasks.
I would suggest increasing one node at a time. You started with 128 tasks which is not a multiple of 48 and thus is probably a poor choice.
do ./xmlchange NTASKS=xx where xx=48,96,144,...

 

[Shreya Bhowmick]

Thanks a lot. That increased the throughput.