Call Targets Not Optimized

[Chris Seaton]

You can use -Dgraal.TruffleCompileOnly=function_name, but for manual testing and just experimenting I almost always write an infinite loop. If you use too many options you can start to get an unrealistic understanding of how Truffle normally works.

Or are you asking about automated testing, where an infinite loop isn’t going to work? For that case in Ruby I use CompilerAsserts.neverPartOfCompilation in a special Ruby method to stop the loop when it is compiled. This is complicated to get right though so ask if that’s what you’re doing and I’ll give more details.

Chris

> On 17 Sep 2016, at 08:54, Cristian Esquivias <cristian.esquivias at gmail.com <mailto:cristian.esquivias at gmail.com>> wrote:
> 
> Thanks Chris, having it run longer did the trick. I disabled background compilation and the program took forever (it's still running). Is there a way to trigger compilation for my functions for small tests without having to write infinite loops or blocking to compile every function?
> 
> - Cristian
> 
> On Sat, Sep 17, 2016 at 12:35 AM, Chris Seaton <chris.seaton at oracle.com <mailto:chris.seaton at oracle.com>> wrote:
> Hi Christian,
> 
> You run a loop 1000+ times, but then do you give it a chance to compile before the program exits? You’ve got background compilation enabled so the program won’t wait for compilation before it exits.
> 
> Instead of running a loop 1000+ times, try making the loop infinite and running it for a few seconds to see what happens longer term.
> 
> Try -Dgraal.TraceTruffleCompilation and -Dgraal.TraceTruffleCompilationDetails to see the compilation events printed as the program runs.
> 
> Chris
> 
> > On 17 Sep 2016, at 08:31, Cristian Esquivias <cristian.esquivias at gmail.com <mailto:cristian.esquivias at gmail.com>> wrote:
> >
> > I moved to a new system and downloaded the latest Graal VM from OTN to try
> > it out. When I ran IGV to see compilations none of my functions appeared. I
> > enabled the TruffleCallTargetProfiling and TruffleCompilationStatistics
> > flags and saw that none of my functions were optimized.
> >
> > Am I doing something wrong? I haven't changed my code, and I'm fairly
> > certain compilation was triggered on my old system (I don't have access to
> > it anymore).
> >
> > I think I set up Graal properly. I basically just call java from my
> > downloaded VM like I normally do. Here's the full command for reference.
> >
> > ~/lib/graalvm-0.16/bin/java
> > -Dgraal.TruffleCompilationStatistics=true
> > -Dgraal.TruffleCompilationExceptionsAreFatal=true
> > -Dgraal.TruffleCallTargetProfiling=true -Dgraal.Dump
> > -Dgraal.TruffleBackgroundCompilation=true -Djvmci.option.Dump -cp
> > $MUMBLER_LIB/antlr4-runtime-4.5.jar:$MUMBLER_LIB/lang.jar
> > mumbler.truffle.TruffleMumblerMain /tmp/inline-test.mumbler
> >
> > My test program is a simple recursive loop that adds a number 1000+ times
> > to trigger compilation. Nothing fancy.
> >
> > I tried to build graal per the instructions on GitHub but I get a
> > compilation error.
> >
> > Some of the output from the flags:
> >
> > Truffle compilation statistics:
> >  Compilations                                      : 0
> >    Success                                         : 0
> >    Failed                                          : 0
> >    Interrupted                                     : 0
> >  Invalidated                                       : 0
> >  Queues                                            : 7
> >  Dequeues                                          : 2
> >  Splits                                            : 0
> >  Compilation Accuracy                              : NaN
> >  Queue Accuracy                                    : 0.714286
> >  Compilation Utilization                           : 0.000000
> >  Remaining Compilation Queue                       : 6
> >
> > Call Target                                         | Total Calls     ||
> > Interp. Calls   | Opt. Calls      || Direct Calls    | Inlined Calls   |
> > Indirect Calls  || Invalidations
> >  [AddBuiltinNodeGen at 6e2c634b]                       |           26000 ||
> >        26000 |               0 ||           26000 |               0 |
> >          0 ||   0
> >  [EqualBuiltinNodeGen at 4b9af9a9]                     |           23005 ||
> >        23005 |               0 ||           23005 |               0 |
> >          0 ||   0
> >  [SubBuiltinNodeGen at 4d405ef7]                       |           23001 ||
> >        23001 |               0 ||           23001 |               0 |
> >          0 ||   0
> >
> > Thanks,
> > Cristian
> 
>