Somewhat trivial, but I notice that you add 4 processes in the first call, but only 3 in the second call. Presumably you meant to add 4 in both cases (master prompt + 4 workers)? In either case, `-p N` and `addprocs(N)` should work exactly equivalently.
On Wed, Aug 20, 2014 at 6:53 PM, <[email protected]> wrote: > Forgive me if this has been answered before; I couldn't find the answer. > > I'm having fun with *IJulia Notebook*, and wanted to create a demo to > show how easy it is to speed up a loop by using the > > julia> *@parallel (+) for . . .* > > construction. In the past, I've launched plain julia from the command line > via > > $ *julia -p 4* > > to use all four cores on my machine. But there doesn't seem to be any way > to do that when launching > > $ *ipython notebook --profile julia* > > So I tried using > > julia>* addproc(3)* > > inside the notebook, but it doesn't utilize all the cores. I even tried > that method in plain julia, and likewise do not get the speedup that I get > by launching julia with the *-p* switch. > > Please help! >
