# CCTM unable to run

**URL:** <https://forum.cmascenter.org/t/cctm-unable-to-run/959>\
**Category:** CMAQ\
**Tags:** admin\
**Created:** [September 21, 2019, 3:08pm UTC](https://forum.cmascenter.org/t/cctm-unable-to-run/959 "2019-09-21T15:08:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Akhila](https://avatars.discourse-cdn.com/v4/letter/a/43a26b/32.png) [@Akhila](https://forum.cmascenter.org/u/Akhila)\
**Post date:** [September 21, 2019, 3:08pm UTC](https://forum.cmascenter.org/t/cctm-unable-to-run/959/1 "2019-09-21T15:08:00Z")

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![cctm](https://canada1.discourse-cdn.com/flex027/uploads/cmas/original/1X/b9d1b5f4e6ee160b6eaa1bb1d452c634eb7802b0.png)

Hello am trying to install CMAQ 502.  
am going through the final stages.  
icon and bcon build and run is done.  
but while running CCTM, am getting this error.  
i have also manged to change open file space.  
so is there any possiblity to fix this issue.  
indly need the support.

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**Author:** ![Akhila](https://avatars.discourse-cdn.com/v4/letter/a/43a26b/32.png) [@Akhila](https://forum.cmascenter.org/u/Akhila)\
**Post date:** [September 22, 2019, 6:26pm UTC](https://forum.cmascenter.org/t/cctm-unable-to-run/959/2 "2019-09-22T18:26:30Z")

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Hello TEAM,  
can someone help me to build cctm without the above error

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<div class="post-metadata">

**Author:** ![Akhila](https://avatars.discourse-cdn.com/v4/letter/a/43a26b/32.png) [@Akhila](https://forum.cmascenter.org/u/Akhila)\
**Post date:** [September 22, 2019, 6:28pm UTC](https://forum.cmascenter.org/t/cctm-unable-to-run/959/3 "2019-09-22T18:28:12Z")

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![cctm](https://canada1.discourse-cdn.com/flex027/uploads/cmas/original/1X/b5b4464b60ab225c76a3d0868384211f9b72e25f.png)

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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:** [October 4, 2019, 3:14pm UTC](https://forum.cmascenter.org/t/cctm-unable-to-run/959/4 "2019-10-04T15:14:06Z")

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Please consider using the CMAQv5.3 version that was recently released.  
The screenshot that you have provided does not contain an error related to building the CMAQ executable from what I can tell.  
You have used a command called unlimit, which we do not suggest that you use.  
I also am not sure what the lsof command is for.