# Run Time Errors and Issues **URL:** https://forum.cmascenter.org/c/cmaq/run-time-errors-and-issues/14.md [Latest](https://forum.cmascenter.org/latest.md) · [Categories](https://forum.cmascenter.org/categories.md) · [Tags](https://forum.cmascenter.org/tags.md) --- ## [About the Run Time Errors and Issues category](https://forum.cmascenter.org/t/about-the-run-time-errors-and-issues-category/35)
**Author:** [@lizadams](https://forum.cmascenter.org/u/lizadams)\ **Replies:** 0\ **Last updated:** [June 21, 2018, 10:40pm UTC](https://forum.cmascenter.org/t/about-the-run-time-errors-and-issues-category/35 "2018-06-21T22:40:41Z")
Having trouble running CMAQ? Review existing topics that have been posted under this category, and if you can’t find something similar, create a new topic and attach your log file and run configuration settings to get he… --- ## [Problem reading smk\_merge\_dates](https://forum.cmascenter.org/t/problem-reading-smk-merge-dates/6275)
**Author:** [@DLyder](https://forum.cmascenter.org/u/DLyder)\ **Replies:** 3\ **Last updated:** [September 30, 2026, 2:15pm UTC](https://forum.cmascenter.org/t/problem-reading-smk-merge-dates/6275 "2026-09-30T14:15:00Z")
Hello! I am trying to run CMAQ 5.5.0.3 to process some stack sources that were created using the mwdss representative date option in SMOKE 5.1. I have included detailed information for the ptnonipm sector. The CCTM scri… --- ## [Undefined Dry Deposition velocity in m3dry for innermost domain of nested simulation](https://forum.cmascenter.org/t/undefined-dry-deposition-velocity-in-m3dry-for-innermost-domain-of-nested-simulation/5880)
**Author:** [@flaviaribeiro](https://forum.cmascenter.org/u/flaviaribeiro)\ **Replies:** 7\ **Last updated:** [June 2, 2026, 3:53pm UTC](https://forum.cmascenter.org/t/undefined-dry-deposition-velocity-in-m3dry-for-innermost-domain-of-nested-simulation/5880 "2026-06-02T15:53:48Z")
Hello! I’ve ran into an error that I’m not finding the solution or a similar post. I’ve ran CMAQ for a coarse domain and it ran fine (or so I think, because I didn’t get any errors and I looked at the output and seemed f… --- ## [CCTM run error about AQCHEM on PE 000](https://forum.cmascenter.org/t/cctm-run-error-about-aqchem-on-pe-000/5509)
**Author:** [@yan2024](https://forum.cmascenter.org/u/yan2024)\ **Replies:** 11\ **Last updated:** [April 21, 2026, 12:26am UTC](https://forum.cmascenter.org/t/cctm-run-error-about-aqchem-on-pe-000/5509 "2026-04-21T00:26:13Z")
Hi teachers, I am currently encountering some issues while running CMAQ and I cant find similar situation from earlier post. For reaching out for your guidance I have attached the error log and my run script for your re… --- ## [CGRID\_SPCS.F problem](https://forum.cmascenter.org/t/cgrid-spcs-f-problem/6081)
**Author:** [@mhdyasaman](https://forum.cmascenter.org/u/mhdyasaman)\ **Replies:** 2\ **Last updated:** [December 5, 2025, 9:10pm UTC](https://forum.cmascenter.org/t/cgrid-spcs-f-problem/6081 "2025-12-05T21:10:32Z")
Hi all, I am trying to run a simulation for 4 days. but I get bellow errors when running my script. I am using cmaq version 5.5 with gcc (GCC) 11.5.0 I don’t know what cmaq is trying to open or find in CGRID\_SPCS.F Er… --- ## [CMAQ5.5 Negative or Zero \[H+\] concentration specified in HLCONST](https://forum.cmascenter.org/t/cmaq5-5-negative-or-zero-h-concentration-specified-in-hlconst/5289)
**Author:** [@ernesto.pinoc](https://forum.cmascenter.org/u/ernesto.pinoc)\ **Replies:** 18\ **Last updated:** [October 7, 2025, 9:55am UTC](https://forum.cmascenter.org/t/cmaq5-5-negative-or-zero-h-concentration-specified-in-hlconst/5289 "2025-10-07T09:55:42Z")
Hello. I’m using the released version of CMAQv5.5. Unfortunately, I’m dealing with this error message: Negative or Zero \[H+\] concentration specified in HLCONST PM3EXIT: date&time specified as 0 Date&time specified a… --- ## [Error reported when running version 5.3.3 of cctm——Open failure for E2C\_CHEM](https://forum.cmascenter.org/t/error-reported-when-running-version-5-3-3-of-cctm-open-failure-for-e2c-chem/4694)
**Author:** [@PPP](https://forum.cmascenter.org/u/PPP)\ **Replies:** 3\ **Last updated:** [August 26, 2025, 11:57am UTC](https://forum.cmascenter.org/t/error-reported-when-running-version-5-3-3-of-cctm-open-failure-for-e2c-chem/4694 "2025-08-26T11:57:48Z")
Hello, I encountered an error while running version 5.3.3 of CCTM. The error is as follows: Is this problem due to our lack of land and lighting files? But we don’t have these two files, can we avoid using them throu… --- ## [CMAQ stalls when writing new IPR output file](https://forum.cmascenter.org/t/cmaq-stalls-when-writing-new-ipr-output-file/5938)
**Author:** [@abhoffman](https://forum.cmascenter.org/u/abhoffman)\ **Replies:** 4\ **Last updated:** [August 1, 2025, 1:06pm UTC](https://forum.cmascenter.org/t/cmaq-stalls-when-writing-new-ipr-output-file/5938 "2025-08-01T13:06:28Z")
I’m running CMAQ v5.5 on the 12US1 domain for January. This is a set-up I’ve run previously. I’ve turned on process analysis and the model is stalling out at the process analysis initialization step. The LOG files read C… --- ## [Can’t find any error in log when i running CCTM script](https://forum.cmascenter.org/t/can-t-find-any-error-in-log-when-i-running-cctm-script/5831)
**Author:** [@sher](https://forum.cmascenter.org/u/sher)\ **Replies:** 3\ **Last updated:** [May 29, 2025, 11:24am UTC](https://forum.cmascenter.org/t/can-t-find-any-error-in-log-when-i-running-cctm-script/5831 "2025-05-29T11:24:12Z")
I was running CMAQv5.3.3 on the supercomputing platform, but the simulation unexpectedly terminated after about 30 seconds. There was no clear error message in the log file. Could you please help me identify the possible… --- ## [Unable to write to AELMO even though new AELMO file successfully created](https://forum.cmascenter.org/t/unable-to-write-to-aelmo-even-though-new-aelmo-file-successfully-created/5762)
**Author:** [@abhoffman](https://forum.cmascenter.org/u/abhoffman)\ **Replies:** 19\ **Last updated:** [May 15, 2025, 4:15pm UTC](https://forum.cmascenter.org/t/unable-to-write-to-aelmo-even-though-new-aelmo-file-successfully-created/5762 "2025-05-15T16:15:59Z")
Problem: When running the benchmark case with CMAQv5.5, the model fails to write to AELMO at the end of the first hour. \>\>---\>\> WARNING in subroutine WRITE3 Invalid file. FNAME="CTM\_AELMO\_1 M3WARN: DTBUF 0:00:00 Ju… --- ## [CMAQ v 54 stops running without error in the middle of simulation](https://forum.cmascenter.org/t/cmaq-v-54-stops-running-without-error-in-the-middle-of-simulation/5797)
**Author:** [@andrei](https://forum.cmascenter.org/u/andrei)\ **Replies:** 3\ **Last updated:** [May 13, 2025, 12:58pm UTC](https://forum.cmascenter.org/t/cmaq-v-54-stops-running-without-error-in-the-middle-of-simulation/5797 "2025-05-13T12:58:53Z")
Hi, I am running CMAQ v54 and it stops in the middle of simulation. I’ve tried to locate the error in in CTM\_LOG\*, but there are no error messages. Tried to decrease setenv CTM\_MAXSYNC 720 ( default) to up to 60, bu… --- ## [NaN or Infinity detected in VDIFF](https://forum.cmascenter.org/t/nan-or-infinity-detected-in-vdiff/3384)
**Author:** [@gc13141112](https://forum.cmascenter.org/u/gc13141112)\ **Replies:** 13\ **Last updated:** [May 10, 2025, 10:33pm UTC](https://forum.cmascenter.org/t/nan-or-infinity-detected-in-vdiff/3384 "2025-05-10T22:33:25Z")
Hi, I am using CMAQv5.3.3 with enabling ISAM and my simulation fails on the 21th time step. The errors are as follows: Processing Day/Time \[YYYYDDD:HHMMSS\]: 2020226:210000 Which is Equivalent to (UTC): 21:00:00 Thursda… --- ## [Can CMAQv5.3.3 run data for one month?](https://forum.cmascenter.org/t/can-cmaqv5-3-3-run-data-for-one-month/4805)
**Author:** [@penguin](https://forum.cmascenter.org/u/penguin)\ **Replies:** 7\ **Last updated:** [April 22, 2025, 1:19pm UTC](https://forum.cmascenter.org/t/can-cmaqv5-3-3-run-data-for-one-month/4805 "2025-04-22T13:19:40Z")
Hello, I am trying to use CMAQv5.3.3 to run the data for one month, I have generated mcip, icbc and emis files, among which, mcip lasts for one month, icbc and emis files last for one day (as far as I know, When running … --- ## [CCTM running error using SLURM：/bin/rm: No match](https://forum.cmascenter.org/t/cctm-running-error-using-slurm-bin-rm-no-match/5743)
**Author:** [@sher](https://forum.cmascenter.org/u/sher)\ **Replies:** 3\ **Last updated:** [April 17, 2025, 2:21pm UTC](https://forum.cmascenter.org/t/cctm-running-error-using-slurm-bin-rm-no-match/5743 "2025-04-17T14:21:12Z")
Dear Sir/Madam, I tried to run CMAQv5.3.3, using SLURM but the SLURM doesn’t work with /bin/rm error message. Compiler is set to intel Working Directory is /fs2/home/qiaozhi/software/cmaq/CMAQV5.3.3/CCTM/scripts Build… --- ## [CCTM running error, Could not open GR\_EMIS\_001 file](https://forum.cmascenter.org/t/cctm-running-error-could-not-open-gr-emis-001-file/5644)
**Author:** [@fang63](https://forum.cmascenter.org/u/fang63)\ **Replies:** 1\ **Last updated:** [March 5, 2025, 1:06am UTC](https://forum.cmascenter.org/t/cctm-running-error-could-not-open-gr-emis-001-file/5644 "2025-03-05T01:06:41Z")
Hi CMAQ users and developers, I am trying to run CCTM, it shows these following error messages. |\> Reading Emission Control Namelist: +====================================== Performing Basic Error Checks for Emis… --- ## [CMAQv5.3.2 CGRID file not written during runtime (Intel Compiler)](https://forum.cmascenter.org/t/cmaqv5-3-2-cgrid-file-not-written-during-runtime-intel-compiler/5393)
**Author:** [@JihyunSeo](https://forum.cmascenter.org/u/JihyunSeo)\ **Replies:** 2\ **Last updated:** [December 5, 2024, 2:48pm UTC](https://forum.cmascenter.org/t/cmaqv5-3-2-cgrid-file-not-written-during-runtime-intel-compiler/5393 "2024-12-05T14:48:24Z")
Hello, I am experiencing an issue where the CGRID file is not written during the execution of CMAQv5.3.2, causing the simulation to stop. I have tried several methods to resolve this issue, but the same error persists, a… --- ## [CMAQv5.5 emission error with negative emissions](https://forum.cmascenter.org/t/cmaqv5-5-emission-error-with-negative-emissions/5389)
**Author:** [@calvinhowes](https://forum.cmascenter.org/u/calvinhowes)\ **Replies:** 7\ **Last updated:** [December 3, 2024, 11:08pm UTC](https://forum.cmascenter.org/t/cmaqv5-5-emission-error-with-negative-emissions/5389 "2024-12-03T23:08:24Z")
Hi there, I’m running CMAQv5.5 with saprc07tc, AERO6, and m3dry deposition. I’ve compiled successfully, and ran the tutorial benchmarking case for CB6r5 and M3DRY without an issue. The error in the relevant node’s log fi… --- ## [Found/solved: v5.5 ERROR in VDIFFPROC- bug in saprc07, ae6, m3dry deposition for ClNO2](https://forum.cmascenter.org/t/found-solved-v5-5-error-in-vdiffproc-bug-in-saprc07-ae6-m3dry-deposition-for-clno2/5390)
**Author:** [@calvinhowes](https://forum.cmascenter.org/u/calvinhowes)\ **Replies:** 1\ **Last updated:** [November 29, 2024, 1:27pm UTC](https://forum.cmascenter.org/t/found-solved-v5-5-error-in-vdiffproc-bug-in-saprc07-ae6-m3dry-deposition-for-clno2/5390 "2024-11-29T13:27:43Z")
I just want to note this here to hopefully benefit the next person googling this error: \*\*\* ERROR ABORT in subroutine VDIFFPROC on PE 044 ; Failure initializing index mapping module Opening the specific cpu’s log … --- ## [Benchmark case for CMAQ 5.3.2 fails](https://forum.cmascenter.org/t/benchmark-case-for-cmaq-5-3-2-fails/2035)
**Author:** [@msospedra](https://forum.cmascenter.org/u/msospedra)\ **Replies:** 8\ **Last updated:** [September 13, 2024, 10:46am UTC](https://forum.cmascenter.org/t/benchmark-case-for-cmaq-5-3-2-fails/2035 "2024-09-13T10:46:53Z")
CMAQ is failing when is trying to create the CONC file when we try to run the benchmark case. We are able to run CMAQ5.3.2 for a different set of input files and domain, but somehow it crashes with the benchmark run scr… --- ## [Error in vertical advection in CMAQv5.0.2](https://forum.cmascenter.org/t/error-in-vertical-advection-in-cmaqv5-0-2/1617)
**Author:** [@ddmmssddoo](https://forum.cmascenter.org/u/ddmmssddoo)\ **Replies:** 3\ **Last updated:** [July 7, 2023, 12:49pm UTC](https://forum.cmascenter.org/t/error-in-vertical-advection-in-cmaqv5-0-2/1617 "2023-07-07T12:49:00Z")
Hi I ran domain 1, but it didn’t go all the way. It has to run from June 15 to July 31, but it only run until June 19. I checked the log file and got this error. zzz2 27 9156.27 8614.00 542.27 8993.65 3.20… --- ## [Rror opening wrfinput\_d01 for reading ierr](https://forum.cmascenter.org/t/rror-opening-wrfinput-d01-for-reading-ierr/4973)
**Author:** [@Sunchanglei](https://forum.cmascenter.org/u/Sunchanglei)\ **Replies:** 2\ **Last updated:** [June 6, 2024, 7:03pm UTC](https://forum.cmascenter.org/t/rror-opening-wrfinput-d01-for-reading-ierr/4973 "2024-06-06T19:03:54Z")
Hello everyone, I encountered following error when running WRF, would like to ask you where the problem may occur? Thank you for your reply！ Also, I want to run CMAQ later. But I use ifort-compiled CMAQ and gfort-compil… --- ## [ERROR - Run CCTM with 112 and 224 processors](https://forum.cmascenter.org/t/error-run-cctm-with-112-and-224-processors/4941)
**Author:** [@lucasb](https://forum.cmascenter.org/u/lucasb)\ **Replies:** 3\ **Last updated:** [May 17, 2024, 4:02pm UTC](https://forum.cmascenter.org/t/error-run-cctm-with-112-and-224-processors/4941 "2024-05-17T16:02:14Z")
Hi there, I run without problem CCTM with 128 and 256 processors using NPCOL\_NPROW=“8 16” and NPCOL\_NPROW=“8 32” respectively, in CMAQ5.0.2. When I try to use NPROC=112 or 224 it doesn’t work and I have always an erro… --- ## [CMAQ v5.4 Benchmark Runtime Error: Illegal Seek](https://forum.cmascenter.org/t/cmaq-v5-4-benchmark-runtime-error-illegal-seek/4822)
**Author:** [@gpara35](https://forum.cmascenter.org/u/gpara35)\ **Replies:** 15\ **Last updated:** [May 14, 2024, 9:15pm UTC](https://forum.cmascenter.org/t/cmaq-v5-4-benchmark-runtime-error-illegal-seek/4822 "2024-05-14T21:15:12Z")
Hi all. I’ve compiled v5.4 succesfully and am now trying to run it on my university’s cluster. I tested it in an interactive session a week ago and it worked fine, so I stopped the script with ctrl-c. Now today, I’m runn… --- ## [CMAQ5.4 log files](https://forum.cmascenter.org/t/cmaq5-4-log-files/4699)
**Author:** [@kmonk](https://forum.cmascenter.org/u/kmonk)\ **Replies:** 2\ **Last updated:** [February 6, 2024, 6:51pm UTC](https://forum.cmascenter.org/t/cmaq5-4-log-files/4699 "2024-02-06T18:51:16Z")
Hello, We have recently started testing CMAQv4.4 with cb6r5\_ae7\_aq. Our slurm out files have become very large because numbers are being printed between the time integration information. It can be anywhere but often i… --- ## [Error running CCTM for CMAQ5.3.3](https://forum.cmascenter.org/t/error-running-cctm-for-cmaq5-3-3/4686)
**Author:** [@penguin](https://forum.cmascenter.org/u/penguin)\ **Replies:** 2\ **Last updated:** [February 4, 2024, 5:59am UTC](https://forum.cmascenter.org/t/error-running-cctm-for-cmaq5-3-3/4686 "2024-02-04T05:59:26Z")
Hello！I am learning to use CMAQ5.3.3. The area I studied was a province in China.The mcip we used was generated by the built-in run\_mcip.csh, and icbc was generated by mozart2camx\_v3.2.1. Since there were multiple CCTM … --- ## [Running CCTM in CMAQ failed](https://forum.cmascenter.org/t/running-cctm-in-cmaq-failed/4648)
**Author:** [@penguin](https://forum.cmascenter.org/u/penguin)\ **Replies:** 3\ **Last updated:** [January 22, 2024, 12:17pm UTC](https://forum.cmascenter.org/t/running-cctm-in-cmaq-failed/4648 "2024-01-22T12:17:36Z")
Hello, I just started to learn to run CMAQ, I use CMAQv5.3.3, where mcip file is run out by run\_mcip.csh, emission file is given by the teacher, initial boundary file is processed by mozart2camx\_v3.2.1, these three steps… --- ## [Problem with emission reading in DESID module of CMAQ 5.4+ for cross-day simulations](https://forum.cmascenter.org/t/problem-with-emission-reading-in-desid-module-of-cmaq-5-4-for-cross-day-simulations/4438)
**Author:** [@wli31](https://forum.cmascenter.org/u/wli31)\ **Replies:** 7\ **Last updated:** [October 4, 2023, 5:11pm UTC](https://forum.cmascenter.org/t/problem-with-emission-reading-in-desid-module-of-cmaq-5-4-for-cross-day-simulations/4438 "2023-10-04T17:11:03Z")
I just want to discuss if this is a potential bug for emission reading on a new day when doing a cross-day simulation. This points to the diagnostic part of the codes in the DESID\_DRIVER subroutine, which further links t… --- ## [How to modify scale factor of emission in CMAQ-5.4-DESIC?](https://forum.cmascenter.org/t/how-to-modify-scale-factor-of-emission-in-cmaq-5-4-desic/4197)
**Author:** [@Hhhhhaofan](https://forum.cmascenter.org/u/Hhhhhaofan)\ **Replies:** 6\ **Last updated:** [September 2, 2023, 8:00am UTC](https://forum.cmascenter.org/t/how-to-modify-scale-factor-of-emission-in-cmaq-5-4-desic/4197 "2023-09-02T08:00:55Z")
Hi, everyone, I want to scale emissions from one stream by a common factor, and I added a rule to the last line of BLD\_CCTM\_v54\_intel\_cb6r5\_ae7\_aq/CMAQ\_Control\_DESID\_cb6r5\_ae7\_aq.nml. ! Scalling all the species of fine… --- ## [How to run PA in CMAQ5.3.3](https://forum.cmascenter.org/t/how-to-run-pa-in-cmaq5-3-3/2987)
**Author:** [@pbwang](https://forum.cmascenter.org/u/pbwang)\ **Replies:** 3\ **Last updated:** [August 28, 2023, 3:39pm UTC](https://forum.cmascenter.org/t/how-to-run-pa-in-cmaq5-3-3/2987 "2023-08-28T15:39:27Z")
Hi all. I install the CMAQ5.3.3 and want to run PA in the CCTM script. I kept the default format in the script: setenv CTM\_PROCAN Y #\> use process analysis \[ default: N\] if ( $?CTM\_PROCAN ) then # $CTM\_PROCAN… --- ## [CMAQ emission file question](https://forum.cmascenter.org/t/cmaq-emission-file-question/4225)
**Author:** [@Evan](https://forum.cmascenter.org/u/Evan)\ **Replies:** 2\ **Last updated:** [July 10, 2023, 8:27am UTC](https://forum.cmascenter.org/t/cmaq-emission-file-question/4225 "2023-07-10T08:27:57Z")
Hello all, I’m currently working with CMAQ\_v5.3.3 and encountering an error related to my emis file. Interestingly, I have previously run the model successfully using the same file. After modifying the emission source f… [Next page](https://forum.cmascenter.org/c/cmaq/run-time-errors-and-issues/14.md?page=1)