And for selecting MPI = [ OpenMPI ] , it gives out another set of logging in console as shown below. From the description of the log, Fluent seems to be launched successfully and can recognize the settings and the names of the geometry groups of the mesh.n*********n/ansys_inc/v202/fluent/fluent20.2.0/bin/fluent -r20.2.0 2ddp -pshmem -host -alnamd64 -t2 -mpi=openmpi -path/ansys_inc/v202/fluent -ssh -cx ASRC-CalSer01:46115:37795nStarting /ansys_inc/v202/fluent/fluent20.2.0/lnamd64/2ddp_host/fluent.20.2.0 host -cx ASRC-CalSer01:46115:37795 (list (rpsetvar (QUOTE parallel/function) fluent 2ddp -flux -node -alnamd64 -r20.2.0 -t2 -pshmem -mpi=openmpi -ssh) (rpsetvar (QUOTE parallel/rhost) ) (rpsetvar (QUOTE parallel/ruser) ) (rpsetvar (QUOTE parallel/nprocs_string) 2) (rpsetvar (QUOTE parallel/auto-spawn?) #t) (rpsetvar (QUOTE parallel/trace-level) 0) (rpsetvar (QUOTE parallel/remote-shell) 1) (rpsetvar (QUOTE parallel/path) /ansys_inc/v202/fluent) (rpsetvar (QUOTE parallel/hostsfile) ) )n       Welcome to ANSYS Fluent 2020 R2n       Copyright 1987-2020 ANSYS, Inc. All Rights Reserved.n       Unauthorized use, distribution or duplication is prohibited.n       This product is subject to U.S. laws governing export and re-export.n       For full Legal Notice, see documentation.nBuild Time: May 29 2020 10:12:32 EDT Build Id: 10176  n    --------------------------------------------------------------n   This is an academic version of ANSYS FLUENT. Usage of this productn   license is limited to the terms and conditions specified in your ANSYSn   license form, additional terms section.n   --------------------------------------------------------------nHost spawning Node 0 on machine ASRC-CalSer01 (unix).n/ansys_inc/v202/fluent/fluent20.2.0/bin/fluent -r20.2.0 2ddp -flux -node -alnamd64 -t2 -pshmem -mpi=openmpi -ssh -mport fixfiledes /ansys_inc/v202/fluent/fluent20.2.0/multiport/mpi/lnamd64/openmpi/bin/mpirun --mca btl self,vader,tcp --mca btl_sm_use_knem 0 --prefix /ansys_inc/v202/fluent/fluent20.2.0/multiport/mpi/lnamd64/openmpi -x LD_LIBRARY_PATH --np 2 --host ASRC-CalSer01:2 /ansys_inc/v202/fluent/fluent20.2.0/lnamd64/2ddp_node/fluent_mpi.20.2.0 node -mpiw openmpi -pic shmem -mport Linux kernel CMA support was requested via thenbtl_vader_single_copy_mechanism MCA variable, but CMA support isnnot available due to restrictive ptrace settings.nThe vader shared memory BTL will fall back on another single-copynmechanism if one is available. This may result in lower performance.n Local host: ASRC-CalSer01n--------------------------------------------------------------------------n-------------------------------------------------------------------------------nID  Hostname    Core O.S.   PID      Vendor           n-------------------------------------------------------------------------------nn0-1 ASRC-CalSer01 2/32 Linux-64 150590-150591 AMD Ryzen 9 5950X 16-Core nhost ASRC-CalSer01    Linux-64 150350     AMD Ryzen 9 5950X 16-Core nMPI Option Selected: openmpinSelected system interconnect: shared-memoryn-------------------------------------------------------------------------------nCleanup script file is /home/asrc/z_temp/Fluent_2phaseFlow_verification/project_files/dp0/FFF/Fluent/cleanup-fluent-ASRC-CalSer01-150350.shnWarning:nSoftware rasterizer found, hardware acceleration will be disabled.nIn the absence of hardware-accelerated drivers, the performance of all graphics operations will be severely affected. Make sure you have a supported graphics card, latest graphics driver, and a supported remote visualization tool with direct server-side rendering enabled. If you feel your system meets these requirements, try forcing the accelerated driver by using the command line flag (-driver ) or setting the HOOPS_PICTURE environment variable. Refer to the documentation for more details.nPosting ANSYS Product Improvement Program startup datanDone.n> nMulticore processors detected. Processor affinity set!n[ASRC-CalSer01:150585] 1 more process has sent help message help-btl-vader.txt / cma-permission-deniedn[ASRC-CalSer01:150585] Set MCA parameter orte_base_help_aggregate to 0 to see all help / error messagesnReading \| gunzip -c \\/home/asrc/z_temp/Fluent_2phaseFlow_verification/project_files/dp0/FFF/Fluent/FFF-Setup-Output.cas.gz\\\...nBuffering for file scan...n  12000 triangular cells, zone 2, binary.n  17840 2D interior faces, zone 1, binary.n   260 2D wall faces, zone 5, binary.n   10 2D velocity-inlet faces, zone 6, binary.n   10 2D pressure-outlet faces, zone 7, binary.n   40 2D wall faces, zone 8, binary.n  6161 nodes, binary.n6161 node flags, binary.nBuilding...n   meshnauto partitioning mesh by Metis (fast),ndistributing meshnparts..,nfaces..,nnodes..,ncells..,n    bandwidth reduction using Reverse Cuthill-McKee: 125/61 = 2.04918n   materials,n   interface,n   domains,nmixturen   zones,nnswall_topnoutlet_ventninletnnswallninterior-surface_bodynsurface_bodySetting surface_body (mixture) ... Done.n Setting zone id of surface_body to 2.n Setting zone id of interior-surface_body to 1.n Setting zone id of nswall to 5.n Setting zone id of inlet to 6.n Setting zone id of outlet_vent to 7.n Setting zone id of nswall_top to 8.nDone.nSetting surface_body (mixture) ... Done.nSetting interior-surface_body (mixture) ... Done.nSetting nswall (mixture) ... Done.nSetting inlet (mixture) ... Done.nSetting outlet_vent (mixture) ... Done.nSetting nswall_top (mixture) ... Done.n   parallel,nDone.nPreparing mesh for display...nDone.n*********nAnd although all the tabs (e.g. File, Domain, Physics, User-Defined...) and items in the tool bar or outline is responsive to the keyboard and mouse input, the preview window keeps on showing gibberish at all times:n