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Re: Google Summer of Code 2013 (GSoC13)

From
Thomas Rast <trast@inf.ethz.ch>
Date
Feb 18, 2013, 19:48 UTC
Message-ID
<87wqu5wgh9.fsf@pctrast.inf.ethz.ch>
In-Reply-To
<87fw0ta4ai.fsf@an-dro.info.enstb.org>
Ronan Keryell <Ronan.Keryell@silkan.com> writes:
Show 10 quoted lines
>>>>>> On Mon, 18 Feb 2013 18:46:05 +0100, Thomas Rast <trast@student.ethz.ch> said:
>
>     Thomas>    The actual programming must be done in C using pthreads
>     Thomas> for obvious reasons.
>
> Are there obvious reasons OpenMP would not be enough to do the job?
>
> It looks like a trade-off between the code readability & portability
> versus the real expressiveness of what parallelism control details are
> needed.
Except for the added dependency you mean?

I'm not sure exactly what the capabilities of OpenMP are that would help here, but most likely it would work. It wouldn't really change the amount of work needed, though, since the main work is in shuffling around the existing code paths to be amenable to parallel access in the first place. A "dumb" parallelization (i.e., just locking around all shared structures) POC yielded very little speedup because of lock contention.

-- 
Thomas Rast
trast@{inf,student}.ethz.ch
Previous: Ronan KeryellNext: Ramkumar Ramachandra
Message 43 of 47 in “Google Summer of Code 2013 (GSoC13)”
  1. Thomas RastFeb 18, 2013
  2. Jeff KingFeb 18, 2013
  3. Ramkumar RamachandraFeb 18, 2013
  4. Jeff KingFeb 18, 2013
  5. Ramkumar RamachandraFeb 18, 2013
  6. Jonathan NiederFeb 18, 2013
  7. Thomas RastFeb 18, 2013
  8. Ramkumar RamachandraFeb 19, 2013
  9. Jeff KingFeb 18, 2013
  10. Ramkumar RamachandraFeb 19, 2013
  11. Thomas RastFeb 18, 2013
  12. Jens LehmannFeb 18, 2013
  13. Junio C HamanoFeb 18, 2013
  14. Ramkumar RamachandraFeb 19, 2013
  15. Jonathan NiederFeb 19, 2013
  16. Ramkumar RamachandraFeb 19, 2013
  17. Thomas RastFeb 19, 2013
  18. Junio C HamanoFeb 19, 2013
  19. Thomas RastFeb 19, 2013
  20. Junio C HamanoFeb 19, 2013
  21. Ramkumar RamachandraFeb 19, 2013
  22. Junio C HamanoFeb 19, 2013
  23. Jonathan NiederFeb 18, 2013
  24. Jens LehmannFeb 18, 2013
  25. Christian CouderFeb 20, 2013
  26. Ramkumar RamachandraFeb 18, 2013
  27. Jeff KingFeb 18, 2013
  28. Junio C HamanoFeb 18, 2013
  29. Potential GSoC13 projects (Re: Google Summer of Code 2013 (GSoC13))Jonathan Nieder, Feb 18, 2013
  30. Duy NguyenFeb 19, 2013
  31. Jeff KingFeb 18, 2013
  32. Jonathan NiederFeb 18, 2013
  33. Shawn PearceFeb 20, 2013
  34. Christian CouderFeb 20, 2013
  35. Matthieu MoyFeb 20, 2013
  36. Thomas RastFeb 21, 2013
  37. Michael SchubertFeb 20, 2013
  38. Carlos Martín NietoFeb 21, 2013
  39. Florian AchleitnerFeb 25, 2013
  40. Junio C HamanoFeb 25, 2013
  41. Thomas RastFeb 18, 2013
  42. Ronan KeryellFeb 18, 2013
  43. Thomas RastFeb 18, 2013
  44. Ramkumar RamachandraFeb 18, 2013
  45. Thomas RastFeb 18, 2013
  46. Duy NguyenFeb 19, 2013
  47. Jaseem AbidFeb 26, 2013

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