On 20-Nov-2016, at 8:36 PM, Kumaraparameshwaran Rathnavel <krath(a)cloudsimple.com&gt; wrote: Hi All , I see that Reactor mask is assigned during the initialisation time. So the global mask represents the number of cores in which reactors can run. So when subsystem is initialised we get a parameter from config file called lcore. The core in which the subsystem should run . So we call a function called spdk_nvmf_allocate_core .. what does this function do. N maximum value of reactor mask is the maximum number of cores in the system. Correct me if I am wrong. N I need to understand about that function. Regards , Param