Problems with Parallel Distributed Configuration

Hi, Everyboy. I just have finished to install and configurate Distributed Matlab following guide. I have only 2 host (A y B). Host A has 4 worker and here is the manager job; host B has 8 worker. When I start workers for job manager, if I start workers from host A only its worker are connected to A but workers of B are failed to connect. And the same if I start workers from host B only its workers are connected and the others (of A) are not. (I proved making a job manager using host B and result in the same situation). When Also, I have used Configurations Manager and I could validate for Job Manager Test. When I use nodestatus warning messages appears talking about workers of B can not connect to Job manager of A.

Thanks for you help

Answer 1

[Jason Ross]

It sounds like you have a networking problem between the two machines, or something is blocking communication.

I'd try the following first:

• Check for firewalls running. Take them down (at least temporarily)
• Check if there is antivirus software that sees MDCS as "suspicious"

Then I'd move onto networking tests:

• ping from one machine to another (both ways)
• nslookup between hosts (check name resolution, both ways)

You can also look into using the Admin Center (which automates a lot of the setup and testing), or call Install Support if you are still stymied.

Answer 2

[Jairo Carlin]

I have deactived Firewall and it was the same. Only one detail, after firewall off, Admin center of machine A loss connection with machine B, also there were 3 host instead of 2. Then, when I try to add host B from admin center of machine A I could not do it. But in machine B, admin center run ok, without changes (i.e there were 2 host machine A and machine B). When Firewall was activated machine A back to initial conditions. Comunnication is good between, for example, I have access by Remoto Desktop to machine A from Machine B, so, there is not communication problems. In Connectivity test I get some messages: Nodes can connect to client (there is error message for host of machine A) and for server hostname consistency.

Thanks for you help.