Re: [GHC] #8611: nofib’s cacheprof’s allocations nondeterminisitic

GHC ghc-devs at haskell.org
Fri Dec 14 16:54:56 UTC 2018


#8611: nofib’s cacheprof’s allocations nondeterminisitic
-------------------------------------+-------------------------------------
        Reporter:  nomeata           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  NoFib benchmark   |              Version:  8.5
  suite                              |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by sgraf):

 If I seq `with_ccs` like this:

 {{{
 foldr seq () with_ccs `seq` return final
 }}}

 where `final = final_cleanup with_synth_2`, the non-determinism seems
 irreproducible. Still, the number of samples (and average residency,
 consequently) varies between 10 and 11.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8611#comment:7>
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