                                  /___secure-channel-> [vm]
[client] <-secure-channel-> [host] _<-secure-channel-> [vm]
                                  |\__secure-channel-> [vm]


1.  Client->Server: scompute_authorize(UID, PASS)
2.  Server->Client: Deny/Grant
3.  Client->Server: scompute_process(..., priotity, weight)
4.  Server->Client: PID=<pid>
5.  Server->VirtMc: {pid=<pid>}{operation=codesubmit}{code}
(acknowledge?)
[time goes by]
6.  VirtMc->Server: {pid=<pid>}{operation=retvm}{...}
7.  Server->Client: {pid=<pid>}{operation=retvm}{struct scomputer_vm}
