Good things are coming soon in Swift 2.2


(David Turnbull) #1

On the swift-dev list they announced the 2.2 branch is now under
restrictive change control. If you're been putting off checking it out, I'd
suggest the next snapshot is worth a look.

I did some benchmarks on the last snapshot using a Parks-McClellan filter
design algorithm. The algorithm is heavy on floating point arithmetic with
a little trig while iterating over arrays.

         C: 2.07ms
Swift 2.2: 2.10ms
Swift 2.1: 2.70ms
  Go 1.5.2: 2.93ms
Ruby 2.0.0: 85.50ms

Math performance is important to my plans for Swift, so this makes me
happy. Ruby and Go haven't improved on this benchmark in two years.

The Parks-McClellan filter design algorithm is hosted here:
https://github.com/AE9RB/firpm

Unfortunately, compile times are longer in 2.2. But one day we'll have it
all.

-david https://github.com/AE9RB/SwiftGL


(Joe Groff) #2

On the swift-dev list they announced the 2.2 branch is now under restrictive change control. If you're been putting off checking it out, I'd suggest the next snapshot is worth a look.

I did some benchmarks on the last snapshot using a Parks-McClellan filter design algorithm. The algorithm is heavy on floating point arithmetic with a little trig while iterating over arrays.

         C: 2.07ms
Swift 2.2: 2.10ms
Swift 2.1: 2.70ms
  Go 1.5.2: 2.93ms
Ruby 2.0.0: 85.50ms

Math performance is important to my plans for Swift, so this makes me happy. Ruby and Go haven't improved on this benchmark in two years.

The Parks-McClellan filter design algorithm is hosted here:
https://github.com/AE9RB/firpm

Nice to hear!

Unfortunately, compile times are longer in 2.2. But one day we'll have it all.

You might want to file a bug so we can investigate the build time regression. Erik's been working on some infrastructure improvements to make whole-module builds more parallel, so if you want to live on the bleeding edge, you might give the 3.0 snapshots a try and see if build time is more survivable.

-Joe

···

On Feb 2, 2016, at 11:10 AM, David Turnbull via swift-users <swift-users@swift.org> wrote:

-david https://github.com/AE9RB/SwiftGL_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users


(David Turnbull) #3

Done. https://bugs.swift.org/browse/SR-663

-david

···

On Tue, Feb 2, 2016 at 11:54 AM, Joe Groff <jgroff@apple.com> wrote:

You might want to file a bug so we can investigate the build time
regression.