Logical cores (lcores) and vCPU both are same or different ?

Question

There are multiple cases:
1. A number of containers have been launched in the same host. how these container communicate to each other
2. Out of "x" numbers of containers in the same host, I want to enable communication between two specific containers. How I can achieve this ?
3. Containers have been launched into different hosts machine and I want to enable communication between these containers. What are the options available ?

Answer 1

Lcore stands for logical cores within a physical core. Presence of lcores in system make performance even better compare to the presence of single phsyical core. Virtual CPU (vCPU) comes under the virtulization concept wherein a hypervisor uses list of avaialble vCPUs and assign to virutal machines. In case of intel processor, if vmx flag is present for a process "cat /proc/cpuinfo" then that means processor support CPU virtualization.