Learning Forum

[rachael.auch]

I am using icemcfd with Ansys 19.3. When I launch icemcfd it is very slow to load, sometimes taking up to 3-5 minutes.

The OS is CentOS 7.

I am using environment modules to load the software. This is the environment module.

set     topdir          /home/ansys2019r3/
set     version         v195

prepend-path  PATH      $topdir/$version/ansys/bin
prepend-path  PATH      $topdir/$version/Framework/bin/Linux64
prepend-path  LD_LIBRARY_PATH $topdir/$version/Framework/bin/Linux64/Mesa
prepend-path  PATH      $topdir/shared_files/licensing/lic_admin
prepend-path  PATH      $topdir/$version/home/ansys2019r3/v195/fluent/bin
setenv ANSYS182_DIR     $topdir/$version/ansys
setenv ANSYSLIC_DIR     $topdir/shared_files/licensing
prepend-path    PATH    $topdir/$version/fluent/bin
prepend-path    PATH    $topdir/$version/icemcfd/linux64_amd/bin
setenv  ICE_ACN         $topdir/$version/icemcfd/linux64_amd
prepend-path    PATH    $topdir/$version/autodyn/bin
prepend-path    PATH    $topdir/$version/Framework/bin/Linux64
prepend-path    PATH    $topdir/$version/polyflow/bin

Once I type in 'icemcfd' it hangs on ICEM_ACN is "/home/ansys2019r3/v195/icemcfd/linux64_amd" and eventually after 5 minutes the software will launch.

Eventually when it does load I get this output on the command line:

LD_LIBRARY_PATH is "/home/ansys2019r3/v195/icemcfd/linux64_amd/libhome/ansys2019r3//v195/Framework/bin/Linux64/Mesahome/ansys2019r3/v195/icemcfd/linux64_amd/binhome/ansys2019r3/v195/icemcfd/linux64_amd/dif/igeshome/ansys2019r3/v195/icemcfd/linux64_amd/../../Framework/bin/Linux64home/ansys2019r3/v195/icemcfd/linux64_amd/../../tp/IntelCompiler/2017.6.256/linx64/lib/intel64".
args =
Window information: depth = 24
                    class = 4
visual depth = 32 class = 4
can't load font screen14, using variable
can't load font symbol14, using variable
can't load font symbol18, using variable
can't load font symbol24, using variable
Graphics system = OglDL
med>

I am not sure what else to troubleshoot. This is a clean installation. I also have the same issue with an existing install on another CentOS 7 machine. Same version of Ansys.

I have tried it without the environment module and I get the same result.

Thanks for any assistance.

 

[tsiriaks]

Looks like a graphics issue.

What if you add the following two environment variables

LIBGL_ALWAYS_SOFTWARE=1

LIBGL_ALWAYS_INDIRECT=1

 

If that doesn't help, what is the output of the following commands

cat /etc/*release

lspci -vnn | grep VGA -A 12

glxinfo | grep OpenGL

Also, see the performance of glxgears (just enter this command to observe it)

[rachael.auch]

Hi thank you for the suggestions.
Setting the environment variables did not improve it unfortunately.

The output of cat /etc/*release:

CentOS Linux release 7.6.1810 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpeo:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
CentOS Linux release 7.6.1810 (Core)

[rachael.auch]

I added an attachment with the rest of the output. I was having problems pasting the rest of the output in a reply. Hopefully that works.

[tsiriaks]

Sorry, ANSYS employees are not allowed to download attachment, can you take screenshot of it and post inline with text ?

[tsiriaks]

In the meantime, please refer to the online ANSYS Help page and search for Linux installation Guide, then look into Chapter 2 and make sure that the machine has all of the required libraries installed.

[rachael.auch]

Sure, posting screenshot of attachment here.

[tsiriaks]

Try two things:

1. Make sure you install all required libraries for ANSYS 2019 R3 to run on CentOS 7.6 . This is described in Chapter 2 of Linux installation Guide.

2. Your Mesa driver is old. Please update it so that it's compatible with at least OpenGL version 4.5. You may need to backup the 'state' of this VM before performing the update.

[rachael.auch]

Is there a link for the Linux Installation Guide? I cannot find the one for version 2019.

[rachael.auch]

This seems to now be working fine under the root account but not under other accounts.

[tsiriaks]

Here is the link

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v201/en/installation/install_linux.html?q=linux%20installation%20guide

If it works for root, try comparing environment variables.

For user accounts, also try

mv ~/.ansys  ~/.ansys.back

mv ~/.mw  ~/.mw.back

[rachael.auch]

Thanks for the suggestions, I have compared the environment variables for the root account and they match up with what we have for the user accounts. I also tried installing all of the prerequisites and also moving the .ansys file in the home directory. There was no .mw file. Still the same issue, I tried it on two separate non-privileged accounts. Is there anything else we can look at?

[tsiriaks]

Thank you for checking/trying that.

I will have to ask around about this as I run out of idea.

This may be some kind of permissions issue but I'm not familiar with ICEM CFD to know where it needs to access/create files.

[rachael.auch]

Hello, thanks for asking around do you have any updates on the ICEM issue? I am not sure what else to check out.

[tsiriaks]

can you provide the output of the following commands when you login as root ?

lspci -vnn | grep VGA -A 12

glxinfo | grep OpenGL

Also, see the performance of glxgears (just enter this command to observe it)

[rachael.auch]

Hello, this was done in the above step, output of those commands posted above.

[tsiriaks]

was that under root or your user account ?

Can you post the output from both accounts so we can compare ?

[rachael.auch]

Sorry for my misunderstanding. This output is from the root account.

I ran these commands on the affected account as well. The output is the same.

[tsiriaks]

Thanks for the info. Let me ask around again about any other thoughts on this.

[rachael.auch]

was wondering if you had any more thoughts on this? We are still encountering the same issue and have not been able to resolve it. n