[Advcomparch] Άσκηση 4: ACCESS_DENIED στο run-sniper

Dimitris Siakavaras jimsiak at cslab.ece.ntua.gr
Wed Jul 10 08:05:35 EEST 2019


Καλησπέρα,

Το μήνυμα αυτό εμφανίζεται πάντα; Αν τρέξεις δηλαδή δέκα φορές το ίδιο 
πράγμα θα πάρεις και τις δέκα το ίδιο μήνυμα;
Αν τρέξεις χωρίς sniper για παραπάνω αριθμό νημάτων, π.χ., 2,4,8 
ολοκληρώνεται και πάλι επιτυχώς;

Δ.

On 9/7/19 5:05 μ.μ., Theodore D wrote:
> Όταν τρέχω το locks με το sniper, λαμβάνω το παρακάτω μήνυμα:
>
> "/home/z/advcomparch/sniper-6.1/run-sniper -c ask4.cfg -d 
> /home/z/advcomparch/ex4/outputs/TAS_CAS.01-cores_001-grain -n 1 --roi 
> -g --perf_model/l2_cache/shared_cores=1 -g 
> --perf_model/l3_cache/shared_cores=1 -- ./locks 1 1000 1"
> [SNIPER] Start
> [SNIPER] 
> --------------------------------------------------------------------------------
> [SNIPER] Sniper using Pin frontend
> [SNIPER] Running pre-ROI region in  CACHE_ONLY mode
> [SNIPER] Running application ROI in DETAILED mode
> [SNIPER] Running post-ROI region in FAST_FORWARD mode
> [SNIPER] 
> --------------------------------------------------------------------------------
> [SNIPER] Internal exception: Exception Code: ACCESS_DENIED. Exception 
> Address = 0x7fd6cdc8feee. Access Type: UNKNOWN. Access Address = 
> 0x7fd6cdccf754
> C: Tool (or Pin) caused signal 11 at PC 0x7fd6cdc8feee
> Pin app terminated abnormally due to signal 11.
> [SNIPER] End
> [SNIPER] Elapsed time: 0.97 seconds
> ------------------------------------------------------------
> Exception Code: ACCESS_DENIED. Exception Address = 0x7fd6cdc8feee. 
> Access Type: UNKNOWN. Access Address = 0x7fd6cdccf754
>
> Backtrace:
>     new_allocator.h:void 
> __gnu_cxx::new_allocator<Thread*>::construct<Thread*, Thread* const&>:120
>
> Αν τρέξω σκέτο το "./locks 1 1000 1" (χωρίς sniper δηλαδή), 
> ολοκληρώνεται επιτυχώς με exit code 0.
>
> Τι πρέπει να διορθώσω;
>
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