Re: [X10-core] Profiling individual at statements at the application level

[Bard B. <bar...@gm...>]

Oooh, that's really nice, David!

Maybe sometime I'll get back to X10 and able to use it.

On Tue, Oct 9, 2012 at 8:03 PM, Vijay Saraswat <vi...@sa...> wrote:

>  Thanks! Looks good.. will be valuable to students. Is this getting into
> 2.3?
>
>
> On 10/9/12 7:46 PM, David Cunningham wrote:
>
> I've just committed to trunk a change that allows code like the following,
> for both managed and native backends:
>
> import x10.io.Console;
>
> import x10.compiler.*;
>
> public class AtProfile {
>
>     public static def printProf (str:String, x:Runtime.Profile) {
>         Console.OUT.println(str+":  Serialization nanos:
> "+x.serializationNanos+"  Communication nanos: "+x.communicationNanos+"
>  Bytes: "+x.bytes);
>     }
>
>     public static def main (args : Array[String]) {
>         val x = new Runtime.Profile();
>         val arr = new Array[Float](25000);
>         val there = here.next();
>
>
>         x.reset();
>         @Profile(x) at (here) {
>             arr(10) = 10.0f;
>         }
>         printProf("Local at", x);
>
>         x.reset();
>         @Profile(x) at (here) async {
>             arr(10) = 10.0f;
>         }
>         printProf("Local at async", x);
>
>         //x.reset();
>         //val tmp = @Profile(x) at (here) arr(10);
>         //printProf("Local at expr", x);
>
>
>         x.reset();
>         @Profile(x) at (there) {
>             arr(10) = 10.0f;
>         }
>         printProf("Remote at", x);
>
>         x.reset();
>         @Profile(x) at (there) async {
>             arr(10) = 10.0f;
>         }
>         printProf("Remote at async", x);
>
>         //x.reset();
>         //val tmp = @Profile(x) at (there) arr(10);
>         //printProf("Remote at expr", x);
>
>
>         x.reset();
>         Runtime.deepCopy(arr, x);
>         printProf("Explicit deep copy", x);
>     }
> }
>
>
> Currently, one cannot put an annotation on an at expression, which is why
> that is commented out.
>
> Exception serialization is not counted, if you throw an exception.  At
> expression return values are also not counted.
>
> The intention is to only include stuff that the program can control in the
> 'bytes' quantity, i.e. exclude internal overheads (like finish state, x10rt
> overheads, IP/layer 2 packet headers, etc) as much as possible.  The
> reasoning is that any answer we can provide is not going to be accurate is
> it will not be sampled at a low enough level.  So it is best to go for the
> other extreme and only provide information the programmer can relate to.
>  This is quite tricky though in the case of e.g. clocks so right now there
> will still be some extra bytes in some cases.
>
>
>
>
>
> Here is the output for both backends:
>
> MANAGED:
> Local at:  Serialization nanos: 17373456  Communication nanos: 0  Bytes:
> 100093
> Local at async:  Serialization nanos: 35523967  Communication nanos: 0
>  Bytes: 100093
> Remote at:  Serialization nanos: 2324627  Communication nanos: 393421
>  Bytes: 100121
> Remote at async:  Serialization nanos: 1060134  Communication nanos:
> 125017  Bytes: 100091
> Explicit deep copy:  Serialization nanos: 1234391  Communication nanos: 0
>  Bytes: 100091
>
> NATIVE:
> Local at:  Serialization nanos: 564253  Communication nanos: 0  Bytes:
> 100054
> Local at async:  Serialization nanos: 258626  Communication nanos: 0
>  Bytes: 100054
> Remote at:  Serialization nanos: 74382  Communication nanos: 85976  Bytes:
> 100068
> Remote at async:  Serialization nanos: 22279  Communication nanos: 70192
>  Bytes: 100052
> Explicit deep copy:  Serialization nanos: 94776  Communication nanos: 0
>  Bytes: 100052
>
> Take the times with a pinch of salt as there is no warmup phase for the
> managed backend, and the native numbers are for an unoptimised build of X10.
>
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