Simulation only includes internal host traffic

[voxuantoan011]

After adding code logging between GPUs and running the sample program, it seems there's no inter-host traffic, only traffic between the 8 GPUs within each host. Is this correct? Other workloads also show no traffic.

SimAI.log

[voxuantoan011]

I've added logging here. Is it only recording traffic within the ring?//

virtual int sim_send(void *buffer,   
                       uint64_t count, 
                       int type,       
                       int dst,
                       int tag,                       
                       AstraSim::sim_request *request, 
                       void (*msg_handler)(void *fun_arg), void *fun_arg) {
    dst += npu_offset;
    task1 t;
    t.src = rank;
    t.dest = dst;
    t.count = count;
    t.type = 0;
    t.fun_arg = fun_arg;
    t.msg_handler = msg_handler;
    {
      #ifdef NS3_MTP
      MtpInterface::explicitCriticalSection cs;
      #endif
      sentHash[make_pair(tag, make_pair(t.src, t.dest))] = t;
      #ifdef NS3_MTP
      cs.ExitSection();
      #endif
    }
    MockNcclLog*NcclLog = MockNcclLog::getInstance();
    NcclLog->writeLog(NcclLogLevel::INFO, "%d,%d,%llu", rank, dst, count);
    SendFlow(rank, dst, count, msg_handler, fun_arg, tag, request);
    return 0;
  }