Hi Mario,
Thanks for the reply, I will check the links out.
Thanks and Cheers!
- vihan
On 1 October 2015 at 14:49, Mario Mulansky
Hi vihan,
On Monday, September 28, 2015 11:02:21 AM Vihan Pandey wrote:
Dear all,
I am trying to integrate a simple 2 variable ODE system. I wanted to know which of the solvers listed here :
http://www.boost.org/doc/libs/1_56_0/libs/numeric/odeint/doc/html/boost_nume
ric_odeint/getting_started/overview.html
are parallelised for multicore CPU’s and GPU’s? Perhaps using Thrust for the Nvidia/CUDA GPU end of things?
odeint provides parallelization backends for explicit steppers (RK methods) based on CUDA (via thrust) [1], OpenCL [2] and OpenMP/MPI [3].
I am principally interested if someone has managed to make/port a library for parallelised RK45 methods. Please note in later work I plan on having more ODE's - probably systems of 12-15 parameters though they will be all be first order equations.
In my experience, parallelization only makes sense if you have at least ~100 variables for CPUs, and at least ~100000 for GPUs. For smaller problems you might be able to get some performance improvements by using SIMD [4,5].
Best, Mario
[1]
http://www.boost.org/doc/libs/1_56_0/libs/numeric/odeint/doc/html/boost_nume... [2]
http://www.boost.org/doc/libs/1_56_0/libs/numeric/odeint/doc/html/boost_nume... [3]
http://www.boost.org/doc/libs/1_56_0/libs/numeric/odeint/doc/html/boost_nume... [4] http://www.codeproject.com/Articles/841136/Boosting-ODE-simulations-with-Boo... [5] http://www.italiancpp.org/dettagli-meetup-firenze-2015/#cpu-power
Thanks and Cheers!
- vihan
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
-- ``Skepticism is healthy only to a limited extent. Being skeptical about proofs and programs (particularly your own) will probably keep your grades healthy and your job fairly secure. But applying that much skepticism will probably also keep you shut away working all the time, instead of letting you get out for exercise and relaxation. Too much skepticism is an open invitation to the state of rigor mortis, where you become so worried about being correct and rigorous that you never get anything finished. -A skeptic" Taken from Concrete Mathematics by Graham, Knuth, and Patashnik