# An error occurred when running the benchmark case

**URL:** <https://forum.cmascenter.org/t/an-error-occurred-when-running-the-benchmark-case/3782>\
**Category:** Run Time Errors and Issues\
**Tags:** cmaq, emissions\
**Created:** [December 16, 2022, 2:53am UTC](https://forum.cmascenter.org/t/an-error-occurred-when-running-the-benchmark-case/3782 "2022-12-16T02:53:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lifenx](https://avatars.discourse-cdn.com/v4/letter/l/c0e974/32.png) [@lifenx](https://forum.cmascenter.org/u/lifenx)\
**Post date:** [December 16, 2022, 2:53am UTC](https://forum.cmascenter.org/t/an-error-occurred-when-running-the-benchmark-case/3782/1 "2022-12-16T02:53:50Z")

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Hi,I want to use CMAQ5.3.2 version to simulate the new species, and the mechanism is cb6r3\_ae7\_aq. I want to test whether the installation is successful based on the basic case, but the following error will be reported once it is run, and I want to find a solution.  
 ![image](https://canada1.discourse-cdn.com/flex027/uploads/cmas/original/2X/b/bc129808ea54549b95ec4d75e273b0f491ca6940.png)  
Someone could help me how can I do? Thanks in advance.

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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:** [January 10, 2023, 4:32pm UTC](https://forum.cmascenter.org/t/an-error-occurred-when-running-the-benchmark-case/3782/2 "2023-01-10T16:32:57Z")

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This error looks similar to what is described in this issue. Please take a look and let us know if it helps to solve your problem.

> [@Tracer namelist in CMAQ5.2](https://forum.cmascenter.org/t/tracer-namelist-in-cmaq5-2/1377):
>
> Hi everyone, I’m trying to use tracer namelist to add T\_DSPM2.5 and T\_DSPM10 tracers in CMAQ5.2 runs (T\_DSPM10 and T\_DSPM2.5 are diesel PM species included in my emission files and I also added them to ICON and BCON files). I’ve done a test run based on [https://github.com/USEPA/CMAQ/blob/master/DOCS/Users\_Guide/Tutorials/CMAQ\_UG\_tutorial\_tracers.md](https://github.com/USEPA/CMAQ/blob/master/DOCS/Users_Guide/Tutorials/CMAQ_UG_tutorial_tracers.md) documentation and successfully ran the model adding CO\_emis as the tracer species. But when I try to add T\_DSPM10 to the same namelist I get segme…

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<div class="post-metadata">

**Author:** ![lifenx](https://avatars.discourse-cdn.com/v4/letter/l/c0e974/32.png) [@lifenx](https://forum.cmascenter.org/u/lifenx)\
**Post date:** [February 3, 2023, 3:16pm UTC](https://forum.cmascenter.org/t/an-error-occurred-when-running-the-benchmark-case/3782/3 "2023-02-03T15:16:38Z")

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Dr lizadams,

Sorry for taking so long to reply you.I tried a few changes, but it still didn’t work.

I used the CMAQ-PFAS version, which adds some species to CMAQ5.3.2. The mechanism is cb6r3\_ae7\_aq, and HFPODA is in GC\_cb6r3\_ae7\_aq.nml. I would like to ask what are the other reasons for such problems? Does it have something to do with the fact that I didn’t add this species to ICON and BCON files?