[codes-ross-users] codes model net problems

[于雷（Yu Lei）]

Hi John,

Thanks for your response.


For the first question, the configuration is as follows:

LPGROUPS {
     ## cluster foo
     FOO_CLUSTER {
         repetitions="12";
         node="1";
         modelnet_simplenet at foo="1";
     }
     FOO_FORWARDERS {
         repetitions="4";
         forwarder="1";
         modelnet_simplenet at foo="1";
     }
     ## cluster bar
     BAR_CLUSTER {
         repetitions="12";
         node="1";
         modelnet_simplenet at bar="1";
     }
     BAR_FORWARDERS {
         repetitions="4";
         forwarder="1";
         modelnet_simplenet at bar="1";
     }
}

PARAMS {
     ## ROSS parameters
     message_size="352";

     ## global modelnet parameters
     modelnet_order=("simplenet");

     ## foo cluster network parameters
     packet_size at foo="8192";
     modelnet_scheduler at foo="fcfs";
     net_startup_ns at foo="1.5";
     net_bw_mbps at foo="10000";

     ## bar cluster network parameters
     packet_size at bar="2048";
     modelnet_scheduler at bar="round-robin";
     net_startup_ns at bar="3.0";
     net_bw_mbps at bar="15000";

     ## forwarding network parameters
     packet_size="4096";
     modelnet_scheduler="fcfs";
     net_startup_ns="8.0";
     net_bw_mbps="5000";
}

run_params {
     num_reqs="5";
     payload_sz="16384";
}

FOO_FORWARDERS and BAR_FORWARDERS are two groups. The lps in these 
groups have the same type but have different annotations. we call 
model_net_event_annotated(
         int net_id,//SIMPLENET(0)
         char const * annotation,
         char const * category,
         tw_lpid final_dest_lp, //sender->gid is 26,final_dest_lp is 58
         uint64_t message_size,
         tw_stime offset,
         int remote_event_size,
         void const * remote_event,
         int self_event_size,
         void const * self_event,
         tw_lp *sender);

Then we can achieve the communication between lp26 and lp58.

For the second questions, is it possible that we use model_net_event() 
to establish a simple point-to-point connection and we send messages 1M 
times and take the average?

Thanks,

Lei

在 2016/8/5 21:40, Jenkins, Jonathan P. 写道:
>
> Hi Yu,
>
> You are correct that modelnet LPs with different annotations shouldn't 
> be able to communicate through the modelnet interface. Can you send us 
> the configuration file you are using, along with the net_id, 
> annotation, final_dest_lp, and sender->gid values for the call that 
> misbehaves? We'll try to reproduce on our end.
>
> The startup parameter in simplenet represents local sender-side 
> overhead on a packet granularity. So one way to estimate the startup 
> is to get an average per-call time (on the sender side) of very small 
> (word-sized) messages. I.e. measure calling send(fd, buf, 8, flags) 1M 
> times and take the average.
>
>
> Thanks,
> John
>
> *From: *<codes-ross-users-bounces at lists.mcs.anl.gov> on behalf of 
> 于雷（Yu Lei）<yulei at buaa.edu.cn>
> *Date: *Thursday, August 4, 2016 at 10:34 PM
> *To: *"codes-ross-users at lists.mcs.anl.gov" 
> <codes-ross-users at lists.mcs.anl.gov>
> *Subject: *[codes-ross-users] codes model net problems
>
>     1/for the method:
>
>     model_net_event_return model_net_event_annotated(
>             int net_id,
>             char const * annotation,
>             char const * category,
>             tw_lpid final_dest_lp,
>             uint64_t message_size,
>             tw_stime offset,
>             int remote_event_size,
>             void const * remote_event,
>             int self_event_size,
>             void const * self_event,
>             tw_lp *sender);
>
>     we think that two lps with same network type but with different
>     annotation can not communicate with this method. But we do some
>     tests which prove that the communication can be established. We
>     don't know why?
>
>     2/for simplenet model, it needs a parameter "start_up". How can we
>     obtain this parameter?
>
>     Thanks,
>
>     Lei
>

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