[codes-ross-users] Simulation ends with events unprocessed

[Gonsiorowski, Elsa]

Hi Jian,

It looks like you have an end time set in you simulation. For ROSS models the end time can be changed with the `--end=`  command line argument. I’m not sure if or how CODES modifies the end time of simulations.

Elsa Gonsiorowski



On Feb 28, 2017, at 14:36, Jian Peng <jpeng10 at hawk.iit.edu<mailto:jpeng10 at hawk.iit.edu>> wrote:

Hi,

    After some debugging, I found the reason of this issue was "tw_event_send()". I added some debugging code shown as "tw_event_send.png". Then I got debugging output as "debug1.png". Please notice the highlighted value of pointer "kp". Then I found this same "kp" value in previous context, shown in "debug2.png". Since the "last_time" is greater than "recv_ts", "tw_eventq_push()" rather than "tw_pq_enqueue()" is called. As I'm doing sequential simulation, "tw_scheduler_sequential()" in tw-shed.c should be used. "tw_pq_dequeue()" is used to read the event queue, shown in "tw_scheduler_sequential.png".

    So here's the question. The events that called "tw_eventq_push()" seem not able to be retrieved by "tw_pq_dequeue()". So I'm wondering that either mapping multiple LPs to one KP or only using "tw_pq_dequeue()" in sequential scheduler is a bug? I haven't looked too much into both parts, just got this question in mind.

    Thanks!



On Mon, Feb 27, 2017 at 1:20 PM, Jian Peng <jpeng10 at hawk.iit.edu<mailto:jpeng10 at hawk.iit.edu>> wrote:
Hi,

    I'm running some experiments on Dragonfly with CODES 5.0.2.  Sometimes they end up with unsent messages remaining in terminals and routers. I think the reason is the events that carry these messages are not handled. I looked through my debugging information and confirmed it.

    So, why does ROSS end when there are still events unprocessed? I'm running a sequential simulation. Thanks.

<image.png>



<debug2.png><debug3.png><tw_scheduler_sequential.png><tw_event_send.png>_______________________________________________
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