# Benchmark simulation run time

**URL:** <https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142>\
**Category:** CMAQ\
**Created:** [March 24, 2022, 3:29pm UTC](https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142 "2022-03-24T15:29:11Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![farzaneh](https://avatars.discourse-cdn.com/v4/letter/f/67e7ee/32.png) [@farzaneh](https://forum.cmascenter.org/u/farzaneh)\
**Post date:** [March 24, 2022, 3:29pm UTC](https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142/1 "2022-03-24T15:29:11Z")

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Hi,  
I am trying to run the benchmark with default data ,and I was wandering how much time and memory it needs  
I used following job script:  
nodes=4  
ntasks-per-node=4  
mem=10GB  
srun run\_cctm\_bench\_2016\_12SE1.csh

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**Author:** ![lizadams](https://avatars.discourse-cdn.com/v4/letter/l/49beb7/32.png) [@lizadams](https://forum.cmascenter.org/u/lizadams)\
**Post date:** [March 24, 2022, 4:22pm UTC](https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142/2 "2022-03-24T16:22:59Z")

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There is a table in the documentation that lists the run times for 4 processors and 32 processors, but not 16. The SE Domain benchmark runs for two days.

> <https://github.com/USEPA/CMAQ/blob/main/DOCS/Users_Guide/CMAQ_UG_ch03_preparing_compute_environment.md#32-hardware-requirements>

8 min/day (32); 47 min/day (4)

In my experience, on 16 processors, the run should take about 20 min/day.

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<div class="post-metadata">

**Author:** ![farzaneh](https://avatars.discourse-cdn.com/v4/letter/f/67e7ee/32.png) [@farzaneh](https://forum.cmascenter.org/u/farzaneh)\
**Post date:** [March 24, 2022, 5:14pm UTC](https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142/3 "2022-03-24T17:14:25Z")

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Thank you Liz,  
It is now running for 6 hours and still there is no result.  
does that mean something is wrong and I install the model wrongly?

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<div class="post-metadata">

**Author:** ![lizadams](https://avatars.discourse-cdn.com/v4/letter/l/49beb7/32.png) [@lizadams](https://forum.cmascenter.org/u/lizadams)\
**Post date:** [March 24, 2022, 6:26pm UTC](https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142/4 "2022-03-24T18:26:45Z")

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Hi Farzaneh,

Can you try following this tutorial to run CMAQ for the benchmark case:

> <https://github.com/USEPA/CMAQ/blob/main/DOCS/Users_Guide/Tutorials/CMAQ_UG_tutorial_benchmark.md>

Rather than submitting the script using srun, typically we submit the job using

sbatch run\_cctm\_bench\_2016\_12SE1.csh

1. Please verify that you compiled the model to run using mpi.
2. Check the values for NPCOL and NPROW in your run script.  
@ NPCOL = 4; @ NPROW = 4
3. Verify that you see CTM\_LOG files being created in the directory where you submitted the job from.

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<div class="post-metadata">

**Author:** ![farzaneh](https://avatars.discourse-cdn.com/v4/letter/f/67e7ee/32.png) [@farzaneh](https://forum.cmascenter.org/u/farzaneh)\
**Post date:** [March 24, 2022, 10:38pm UTC](https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142/5 "2022-03-24T22:38:14Z")

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Hi,  
I installed it based on this tutorial.  
I tried to use " sbatch run\_cctm\_bench\_2016\_12SE1.csh" with no job script but stopped with this error :  
There are not enough slots available in the system to satisfy the 16  
slots that were requested by the application:

/data/p305645/CMAQ/CCTM/scripts/BLD\_CCTM\_v533\_gcc/CCTM\_v533.exe

Either request fewer slots for your application, or make more slots  
available for use.  
so I write this job script to ask it for free slot  
#!/bin/csh  
#SBATCH --time=24:00:00  
#SBATCH --nodes=4  
#SBATCH --ntasks-per-node=8  
#SBATCH --mem=20GB  
srun run\_cctm\_Bench\_2016\_12SE1.csh | & tee cctm.log  
but after 12 hours, it is still running with no result. I have no idea what is the problem .

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<div class="post-metadata">

**Author:** ![lizadams](https://avatars.discourse-cdn.com/v4/letter/l/49beb7/32.png) [@lizadams](https://forum.cmascenter.org/u/lizadams)\
**Post date:** [March 25, 2022, 2:08pm UTC](https://forum.cmascenter.org/t/benchmark-simulation-run-time/3142/6 "2022-03-25T14:08:57Z")

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> [@farzaneh](#):
>
> There are not enough slots available in the system to satisfy the 16  
> slots that were requested by the application:

You can try the following commands to learn more about the cpu resources available on your system.

```auto
sinfo

```

```auto
scontrol show partition 

```