[m-users.] uncaught Mercury exception using mdprof_create_feedback
jfischer at opturion.com
Mon Sep 29 12:47:32 AEST 2014
On Mon, 29 Sep 2014, Paul Bone wrote:
> On Sun, Sep 28, 2014 at 04:35:17PM +0200, Matthias Guedemann wrote:
>> Dear all,
>> I am using mmc version 14.01.1, trying to use the implicit parallelism
>> My program looks roughly like this:
>> | main(!IO) :-
>> | ...
>> | (( prepareGraph(E1),
>> | G1 = createGraph(E1),
>> | R1 = analyseGraph(G1)),
>> | ( prepareGraph(E2),
>> | G2 = createGraph(E2),
>> | R2 = analyseGraph(G2)),
>> | ( prepareGraph(E3),
>> | G3 = createGraph(E3),
>> | R3 = analyseGraph(G3))
>> | ),
>> | ...
>> | some IO on results
>> This works without problems, I can also execute the three independent
>> conjunction groups using parallel-AND in the asm_fast.par.gc.stseg grade
>> with 300% CPU usage. But when I use
>> % mmc --deep-profiling --profile-for-feedback
>> mdprof_create_feedback chokes on the created Deep.data file. I always
>> get the error:
>> | Uncaught Mercury exception:
>> | Software Error: measurements: predicate `measurements.check_total_calls'/3: Unexpected: TotalCalls \= CallsA + CallsB
>> | Stack dump not available in this grade.
>> when using
>> % mdprof_create_feedback --implicit-parallelism Deep.data feedback.data
>> What am I doing wrong?
> You're not, this is a very experimentail feature and it doesn't work for all
> Mercury programs. I think that you would get this type of error if the
> program throws an exception.
The latter is unlikely, the deep profiling runtime system currently
aborts if an exception is thrown.
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