CMAQv5.2.1: running CCTM Benchmark error

Hello,
I got this error when I am running CCTM Benchmark Script (using run_cctm.csh).
Please any help to overcome this issue.
thank you

mpirun -r ssh -np 8 /home/cmaq/Build_CMAQ/CMAQ_Project/CCTM/scripts/BLD_CCTM_v521_gcc/CCTM_v521.exe
mpirun: Error: unknown option “-r”
Type ‘mpirun --help’ for usage.
0.004u 0.002s 0:00.00 0.0% 0+0k 0+0io 0pf+0w
date
Thu Aug 20 13:24:44 EDT 2020
if ( ! -e /home/cmaq/Build_CMAQ/CMAQ_Project/data/output_CCTM_v521_gcc_SE52BENCH/LOGS ) then
mv: No match.
setenv NEW_START false
set TODAYG = date -ud "${TODAYG}+1days" +%Y-%m-%d
date -ud 2011-07-01+1days +%Y-%m-%d
set TODAYJ = date -ud "${TODAYG}" +%Y%j
date -ud 2011-07-02 +%Y%j
end
while ( 2011183 < = 2011182 )
exit

mpirun -r ssh -np 8 /home/cmaq/Build_CMAQ/CMAQ_Project/CCTM/scripts/BLD_CCTM_v521_gcc/CCTM_v521.exe
mpirun: Error: unknown option “-r”
Type ‘mpirun --help’ for usage.

Have you tried typing mpirun --help to get instructions on how to use mpirun on your system?

Thank you for your message.
I removed the "-r ssh " portion of the command “time mpirun -np $NPROCS $BLD/$EXEC” in my run_cctm.csh script and it worked very well.

Wishes,