You might try futures. Do read the guide first, of course. Robby
On Wed, May 11, 2011 at 2:12 PM, Jay McCarthy <[email protected]> wrote: > 2011/5/11 Stephen Bloch <[email protected]>: >> So there are these things called "futures" and "places", of which I gather >> the former are easier to use, but the latter, by being more constrained, >> take better advantage of parallel hardware. I haven't tried working with >> either of them yet, but I wanted to ask how feasible the following is. >> >> The "map-image" and "build-image" functions in the picturing-programs >> collection both construct an image pixel by pixel, using a "for" loop of >> which each iteration determines the color of a different pixel. It's a >> perfect application for parallelism, as the iterations neither depend on one >> another nor mutate the same memory location. If only there were a really >> easy way to parallelize it... >> >> My ideal interface would be a "for/parallel" form that executes the "for" >> body conceptually in parallel for each possible values of the loop >> variables. Even friendlier would be for the existing "for" forms to do that >> automatically until something order-dependent happens... but that seems very >> difficult to detect. By using "for/parallel", I would be promising the >> compiler that >> (a) no iteration of the for-loop depends on results computed by any other >> iteration of the for-loop, and >> (b) different iterations of the for-loop either don't mutate any of the same >> memory locations, or if they do, I don't care which one gets there first. >> >> >> A related question: has anybody written a Racket interface to make use of >> CUDA GPU's? > > Yes: > > http://planet.racket-lang.org/display.ss?package=opencl.plt&owner=jaymccarthy > >> >> >> >> >> Stephen Bloch >> [email protected] >> >> >> _________________________________________________ >> For list-related administrative tasks: >> http://lists.racket-lang.org/listinfo/users >> > > > > -- > Jay McCarthy <[email protected]> > Assistant Professor / Brigham Young University > http://faculty.cs.byu.edu/~jay > > "The glory of God is Intelligence" - D&C 93 > > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
