at some point jiahao wrote a web server with morsel which did the pi example
here's one instance
https://github.com/JuliaX/iap2014/blob/master/Monte%20Carlo%20web%20service.ipynb
it also had nice julia graphics, rather than using mathematica graphics

i try to use X = Mmap.mmap(io, Vector{Float64}, (10^9,)) , but does not finish creating the array, the computer crashes, then i need restart the computer, although X = Mmap.mmap(io, Vector{Float64}, (10^8,)) finish creating the array without any problem. is there any way to fix this?
-I used a text file to store the array.
-I use Julia 0.5.0
-processor: INTEL: Intel(R) Core(TM) i7-3630QM CPU @ 2.40GHz, 6037 MB
-GPU: NVIDIA : GeForce GT 630M, 2048 MB
-OS: Windows10, x64

can't we have everyone in the audience do a computation, like histogram
the number of heads in 1000 trials of 1000 coin tosses and then
combine the histograms with an async?

that seems like more audience participation parallelism

π(n) = mapreduce( x->rand()^2+rand()^2 < 1.0 ,+, 0, 1:n)*4/n