Charm++ parallel programming system

[Jonathan Lifflander <jliffl2 AT illinois.edu>]

>From reading the code, I was wrong about the EVENT field. I think it
can be used in a very indirect way to determine the instance, but it
will be difficult and I'm not sure it will be correct.

I think we should add a field to the logs that specifies the object
instance (it would be an integer that specifies the ID of the array or
chare in the case of a singleton). Does that sound like what you need?
Do you have existing logs you need this for, you can you rerun the
program if I add this?

Jonathan

On 2 December 2014 at 18:21, Kate Isaacs 
<keisaacs AT ucdavis.edu>
 wrote:
> That sounds promising but I'm not quite clear on what it means or how to use
> it to correlate.
>
> If it identifies the exact chare, then could it be used to identify specific
> chares outside of a chare array?
>
> Does it identify the exact chare when not in a chare array and a chare array
> when the active chare is a member of such an array (using then the id
> 4-tuple to identify the exact chare)?
>
> So far, I've been using exact match on the EVENT field to match a message
> CREATE event with its matching BEGIN_PROCESSING for only messages sent
> between chares that are parts of chare arrays. The CREATE event does not
> record an array index, but the EVENT field ensures the CREATE matches the
> BEGIN_PROCESSING, so what does EVENT mean here?
>
> Thanks so much!
> Kate
>
> On Mon, Dec 1, 2014 at 4:29 PM, Jonathan Lifflander 
> <jliffl2 AT illinois.edu>
> wrote:
>>
>> I believe you can use the "EVENT" field in the log, which (while badly
>> named) correlates all the instantiations of a given entity (chare,
>> chare array, group, etc.). Does this make sense?
>>
>> /// BEGIN_PROCESSING MESSAGE_TYPE ENTRY TIME EVENT PE @2(MSGLEN)
>> ///                  @4(RECV_TIME ID0 ID1 ID2) @7(ID3)
>> @6.5(CPU_START_TIME)
>> ///                  @6.6(NUM_PERF_COUNTS $NUM_PERF_COUNTS*PERF_COUNT)
>>
>> On 1 December 2014 at 13:58, Kate Isaacs 
>> <keisaacs AT ucdavis.edu>
>>  wrote:
>> > Hi,
>> >
>> > I'm trying to associate Begin Processing events in Projections logs with
>> > specific chares in chare arrays. From the logs I can:
>> > 1. Get the entry ID and thus get the associated chare type ID --> type
>> > of
>> > chare array
>> > 2. Get the 4-tuple index of that chare within its chare array --> array
>> > index
>> > If I have two chare arrays of the same chare type, how do I
>> > differentiate
>> > them in the logs?
>> >
>> > Thanks!
>> > Kate
>> >
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