Re: [julia-users] Re: Help needed, running slow

In my package tests I normally run Lint.jl as the last thing with... # run lint println("Running Lint...") lintpkg("MyPkg") Maybe it would help if we put Lint into the default REQUIRE in package generation and the above lines into test/runtests.jl? On Thu, Jul 24, 2014 at 12:54 PM, John Myles

Re: [julia-users] Re: Help needed, running slow

I believe the main problem with the global scope isn't that it's called the global scope (rather than the scope of a let block), but that the scope is never terminated during a REPL session, preventing end-to-end analysis of types. -- John On Jul 24, 2014, at 7:14 AM, Arnaud Amiel wrote: > I

Re: [julia-users] Re: Help needed, running slow

I believe this would solve my problem On Thursday, 24 July 2014 15:02:26 UTC+1, Tobias Knopp wrote: > So, question would be: Is it possible to have an include like command that > puts everthing into its own scope (using let?) >

Re: [julia-users] Re: Help needed, running slow

So, question would be: Is it possible to have an include like command that puts everthing into its own scope (using let?)? Am Donnerstag, 24. Juli 2014 15:48:26 UTC+2 schrieb Arnaud Amiel: > > Exactly my problem here, stuggling to understand what "global variables" > are in the context of what I

Re: [julia-users] Re: Help needed, running slow

Exactly my problem here, stuggling to understand what "global variables" are in the context of what I see as a script which I assumed was running in its own context. I am new to Julia and hardly ever used dynamic languages before so lots of strange and magic behaviour here for me. Some of my p

Re: [julia-users] Re: Help needed, running slow

(Making an attempt at going back somewhat on topic...) I think some of the frustration here is also that it's not entirely obvious even from the performance tips that putting your code in a function will make such a huge difference.

Re: [julia-users] Re: Help needed, running slow

Live editor/IDE integration of linting (and type-checking) a la Matlab would be quite nice to have one of these days. Julia seems to self-select for the type of people who actually listen to suggestions and are willing to experiment with refactoring and profiling, but I still fear the piles of

Re: [julia-users] Re: Help needed, running slow

My inclination is to include type checking and linting in base Julia, automatically invoked by a "paranoid" mode that also ignores inbounds annotations and such. Then the testing infrastructure should run tests in paranoid mode, linting and type checking the code to be tested. This seems like a

Re: [julia-users] Re: Help needed, running slow

> I'd be strongly in favor of that, but it would make Julia feel more like one of those static languages for which compilers readily warn you about your bad habits. Maybe Lint and TypeCheck should display their message with a `suggest("blah")` or `hint("blah")` that is printed in purple instea

Re: [julia-users] Re: Help needed, running slow

I for one am thrilled to be able to program every day in such a beautiful, flexible, clean language with generally good performance and in which sparkling performance is possible. By comparison, performance instability is a minor matter. There, I have thoroughly discredited myself by banal cha

Re: [julia-users] Re: Help needed, running slow

Admit that you really want to program in OCaml ;-) > On Jul 23, 2014, at 11:39 AM, John Myles White > wrote: > > I think the difficulty here is that the people who are worst affected by > these kinds of performance changes may be people who also might not know that > they should opt in to usi

Re: [julia-users] Re: Help needed, running slow

I think the difficulty here is that the people who are worst affected by these kinds of performance changes may be people who also might not know that they should opt in to using Lint/TypeCheck. To get the proper effect from those tools, you probably need to impose them from above by default rat

Re: [julia-users] Re: Help needed, running slow

On Wednesday, July 23, 2014 12:49:28 PM UTC-5, Stefan Karpinski wrote: > > I definitely agree that the current status is suboptimal. Lord only knows > I've spent a lot of time thinking about ways to fix the slow global scope > issue. Many but by no means all of these thoughts are in the issues Ja

Re: [julia-users] Re: Help needed, running slow

Latest thoughts on the issue: https://github.com/JuliaLang/julia/issues/524#issuecomment-49914439 On Wed, Jul 23, 2014 at 10:48 AM, Stefan Karpinski wrote: > I definitely agree that the current status is suboptimal. Lord only knows > I've spent a lot of time thinking about ways to fix the slow

Re: [julia-users] Re: Help needed, running slow

I definitely agree that the current status is suboptimal. Lord only knows I've spent a lot of time thinking about ways to fix the slow global scope issue. Many but by no means all of these thoughts are in the issues Jacob linked to. If we figure out a solution that seems to be the right way to do i

Re: [julia-users] Re: Help needed, running slow

There's https://github.com/JuliaLang/julia/issues/524 https://github.com/JuliaLang/julia/issues/964 And Jeff has mentioned it in his compiler list: https://github.com/JuliaLang/julia/issues/3440 -Jacob On Wed, Jul 23, 2014 at 1:18 PM, Kevin Squire wrote: > On Wed, Jul 23, 2014 at 9:38 AM, A

Re: [julia-users] Re: Help needed, running slow

On Wed, Jul 23, 2014 at 9:38 AM, Arnaud Amiel wrote: > As suggested by a few of you, I put everything in a function and now it > runs in 1/4 s, that is nearly 32 x improvement for 'no change' that is one > of the aspects I don't like in julia. > I've used Julia for a couple of years now, and am

Re: [julia-users] Re: Help needed, running slow

You don't like getting 32x speed improvements with almost no changes? There are plenty of languages where things are slow in both global and local scope, in which case you won't have that problem. I suspect, however, that is not actually preferable. > On Jul 23, 2014, at 9:38 AM, Arnaud Amiel

Re: [julia-users] Re: Help needed, running slow

I can see that but it was not directly obvious to me. I guess that is why I am playing with Julia. Now onto Euler 26 should not be too hard... On Wednesday, 23 July 2014 17:40:07 UTC+1, John Myles White wrote: > > Why not view this as a learning opportunity to discover that changes you > perceiv

[julia-users] Re: Help needed, running slow

Well spotted, not quite right, when not paying attention I regularly get confused with in and = although in this case it does not really matter. On Tuesday, 22 July 2014 23:45:21 UTC+1, J Luis wrote: > > Hmmm, is this right? > > for j in 1:f[i] > > >

Re: [julia-users] Re: Help needed, running slow

Why not view this as a learning opportunity to discover that changes you perceive to be minor are, in fact, not minor -- but are instead substantive changes to the semantics of your program? -- John On Jul 23, 2014, at 9:38 AM, Arnaud Amiel wrote: > As suggested by a few of you, I put everyt

[julia-users] Re: Help needed, running slow

As suggested by a few of you, I put everything in a function and now it runs in 1/4 s, that is nearly 32 x improvement for 'no change' that is one of the aspects I don't like in julia. Anyway, lesson learnt I will now put everything inside functions and will learn how to use the profiler

[julia-users] Re: Help needed, running slow

Hmmm, is this right? for j in 1:f[i] Terça-feira, 22 de Julho de 2014 23:22:48 UTC+1, Iain Dunning escreveu: > > For what its worth, I put everything from > abundantNumbers=Array(Int,1) > to > result > > in a function, and ran that function with @time. I got > elapsed time: 0.074687051 seconds

[julia-users] Re: Help needed, running slow

I just put all your top-level statements (except for the two helper functions) into a function of its own: julia> @time main() elapsed time: 0.162065867 seconds (14434040 bytes allocated) 4179871 I don't think my 5 year old laptop could be *that* much faster than your computer. Take a look at

[julia-users] Re: Help needed, running slow

For what its worth, I put everything from abundantNumbers=Array(Int,1) to result in a function, and ran that function with @time. I got elapsed time: 0.074687051 seconds elapsed time: 0.258023294 seconds (22897960 bytes allocated, 4.74% gc time) which seems right. On Tuesday, July 22, 2014 6:1

[julia-users] Re: Help needed, running slow

I suspect you might find the profiler helpful: http://julia.readthedocs.org/en/latest/stdlib/profile/ (And the ProfileView.jl package provides a nice visualization of profiler results--you should check it out too!) On Tuesday, July 22, 2014 4:47:09 PM UTC-5, Arnaud Amiel wrote: > > To learn how