Learning Forum

[nkirkby]

Hello, I have just installed AnsysEM v242 and rsm on a remote Ubuntu 22.04.4 LTS system.

I am running AEDT v231 on a Windows 11, and have configured the remote Ubuntu system as a remote solver. I find the following error when clicking Analyze All:

Checking Machine 
    Pinging machine 
        32 bytes from :icmp_seq=0 time=5 ms TTL=129
        32 bytes from :icmp_seq=1 time=5 ms TTL=129
        32 bytes from :icmp_seq=2 time=5 ms TTL=129
        32 bytes from :icmp_seq=3 time=5 ms TTL=129
        4 packets transmitted,4 packets received, 0%packet loss. Round-trip (ms)  min/avg/max = 5/5/5
    Checking AnsoftRSMService availability on machine 
        AnsoftRSMService is alive
        This machine has multiple network cards. Additional configuration may be required...
        The IP addresses for this machine are:
             
             
        AnsoftRSMService is listening at  : 32958
        AnsoftRSMService is configured to allow remote solves
    Checking list of registered engines on machine 
        enscomengine:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/ENSCOMENGINE
        EXTRACTOR2DCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/EXTRACTOR2DCOMENGINE
        HFSSCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/HFSSCOMENGINE
        ICEPAKCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/ICEPAKCOMENGINE
        MAXWELL2DCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/MAXWELL2DCOMENGINE
        MAXWELLCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/MAXWELLCOMENGINE
        MECHANICALCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/MECHANICALCOMENGINE
        Q3DCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/Q3DCOMENGINE
        RMXPRTCOMENGINE:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/RMXPRTCOMENGINE
        desktopjob:ElectronicsDesktop2024.2 is registered and available from /home//AnsysEM/v242/Linux64/desktopjob
        nexxim:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/nexxim
        spexporter:2024.2 is registered and available from /home//AnsysEM/v242/Linux64/spexporter
    Checking for jobs running registered engines on machine 
    There are no jobs running registered product engines on this machine
Testing Completed.
Success! All tests successful.

 

What might the problem be?

[nkirkby]

Here are the contents of AnsysEM/rsm/Linux64/ansoftrsmservice.log:

cat ansoftrsmservice.log
*** Dependency verification test disabled by default ***
    [ Use 'export ANS_DEPCHECK=1 ; ./ConfigureSoftware.bash --fullconfig' ]
-----------------
[Error] AnsoftRSM initialization warning: This machine has multiple IP addresses. In case of communication issues, refer to product documentation for multiple IP addresses.

[randyk]

Hi Nkirby,

Please do the following:

1. make sure the version on your Windows is exactly the same as the Linux:
Linux: cat /home/AnsysEM/v242/Linux64/product.info
Windows:  type  "C:\Program Files\AnsysEM\v242\Win64\product.info"

2. On Linux, make sure the default tempdirectory is referencing a writable location - like /tmp
This is specified in file:   /home/AnsysEM/v242/Linux64/config/default.cfg

3. On Linux, confirm solver functionallity:
mkdir ~/anstest

cd ~/anstest

cp /home/AnsysEM/v242/Linux64/schedulers/diagnostics/Projects/HFSS/OptimTee-DiscreteSweep-FineMesh.aedt   ~/anstest/OptimTee-DiscreteSweep-FineMesh.aedt

/home/AnsysEM/v242/Linux64/ansysedt -ng -monitor -useelectronicsppe=1 -distributed -machinelist list=localhost:-1:4:90% -auto -batchoptions "" -batchsolve TeeModel:Nominal:Setup1  ~/anstest/OptimTee-DiscreteSweep-FineMesh.aedt

Examine the ~/anstest/OptimTee-DiscreteSweep-FineMesh.aedt.batchinfo/*.log    to confirm successful completion  (should solve 3-5 min)

If success, clear all but the ~/anstest/OptimTee-DiscreteSweep-FineMesh.aedt

rerun with the following change:
/home/AnsysEM/v242/Linux64/ansysedt -ng -monitor -useelectronicsppe=1 -distributed -machinelist list=$(hostname):-1:4:90% -auto -batchoptions "" -batchsolve TeeModel:Nominal:Setup1  ~/anstest/OptimTee-DiscreteSweep-FineMesh.aedt

Is this successful?

If so, make sure:
1. Passwordless SSH is enabled on Linux
2. all firewalls are disabled on both Windows and Linux (for this test)
3. both machines are on the same network
4. Open AEDT in Windows and run:

Copy "C:\Program Files\AnsysEM\v242\Win64\schedulers\diagnostics\Projects\HFSS\OptimTee-DiscreteSweep-FineMesh.aedt"  to  c:\temp

Open C:\temp\OptimTee-DiscreteSweep-FineMesh.aedt

AEDT : Tools->Options-> General Options->Remote Analysis
         [x] Specified User
         Username: 
         Password: 
         Domain:  blank

AEDT : Tools->Options->HPC and Analysis options
Design type: HFSS
[Copy]
Configuration name:
[x] Use automatic settings
Num variations to distribute [1]
Select/rename "localhost"  to the name of your Linux hostname
Cores=4
GPUs=0
RAM Limit=90%
Enabled [x]
[OK]
[Make Active]
[Ok]

Expand the project -> Analysis -> Setup1 
rt-click on "sweep"  and select "Analyze"

Is this successful?

If so and you require firewalls on your Windows machine - there are multiple options:
1. you could open all ports between your Windows and Linux machine
2. you could open all ephemeral ports with something like (assuming Windows Defender FW)
From Elevated CMD (rt-click and "run as admin"):
   netsh advfirewall firewall add rule name=HFSS dir=in protocol=tcp localport=49152-65535 action=allow
3. recursively add all binaries from the AnsysEM installation to your firewall exceptions

thanks
Randy

[nkirkby]

It seems I am facing the same issue as this post:

I had some troubles in the past with versions 13-15. There were TCP ports necessary to open, not properly documented in the manual. Try disabling firewalls completely, for determining, is it the case. RMS and the EDT should be of the same version, btw.

Facing issues while distributing the tasks on different machines

Could you please list the exact ports that must be open on the server? This machine cannot run with firewall (ufw) completely disabled. 

 

 

[randyk]

Hi nkirkby,

For firewalls, you would need to open the complete ephemeral port range (TCP only) for our solvers.
You can obtain the starting port and range with the following commands:
   Linux:  cat /proc/sys/net/ipv4/ip_local_port_range 
   Windows: NetSh INT IPV4 Show DynamicPort TCP

Also, you would want TCP 32958 for ansoftrsmservice and whatever ports your selected MPI uses.

"Determining memory availability"  is MPI related settings and most likely not firewalls.

Some MPI related items to look when solving on remote Linux solves are:
- using IMPI 2021 in RHEL8.x OS variants 
- Passwordless SSH 
- Environments to use the correct network (if multiple networks are available on each machine)
- specifying the user/password in AEDT-Tools-Options-General Options-Remote Analysis

Some MPI related items to look when solving on remote Windows solves are:
- installing the correct Intel MPI version, creating the service
- registering the user password on each machine
- Environments to use the correct network (if multiple networks are available on each machine)
- specifying the user/password in AEDT-Tools-Options-General Options-Remote Analysis