Go 1.7 Beta 1 is released

[Andrew Gerrand]

Hello gophers,

We have just released go1.7beta1, a beta version of Go 1.6.

It is cut from the master branch at the revision tagged go1.7beta1.

Please help us by testing your Go programs with the release, and report any problems using the issue tracker:

    https://golang.org/issue/new

You can download binary and source distributions from the usual place:

    https://golang.org/dl/#go1.7beta1

To find out what has changed in Go 1.7, read the draft release notes:

    https://tip.golang.org/doc/go1.7

Documentation for Go 1.7 is available at:

    https://tip.golang.org/

Our goal is to release the final version of Go 1.7 on the 1st of August.

Cheers,

Andrew

[Andrew Gerrand]

On 2 June 2016 at 11:47, Andrew Gerrand <a...@golang.org> wrote:

We have just released go1.7beta1, a beta version of Go 1.6.

Continuing in the tradition of me making typos in release announcements, obviously this should be "Go 1.7."

[Roberto Zanotto]

Congratulations!

I'm writing a binary encoder, the execution time decreased by 50% for encoding small structs

(the thing is not even fully optimized yet).

[Seb Binet]

On Thu, Jun 2, 2016 at 7:41 PM, Roberto Zanotto <roby...@gmail.com> wrote:

Congratulations!

I'm writing a binary encoder, the execution time decreased by 50% for encoding small structs

(the thing is not even fully optimized yet).

as yet another data point, testing a number-crunching test application [0], I went from ~29s (go-1.6.2) to ~24s (go-1.7b1).

the C++ code (gcc-6.1) is clocking at ~36s:

$ time run-c++

real 0m36.617s

user 0m36.580s

sys 0m0.013s

$ time run-go-1.6.2

real 0m29.523s

user 0m29.667s

sys 0m0.023s

$ time run-go-1.7b1

real 0m24.128s

user 0m24.063s

sys 0m0.023s

Really nice! :)

(nothing is concurrent at this time: neither Go's code nor C++'s)

-s

[0] https://github.com/sbinet-staging/3photons

On Thursday, June 2, 2016 at 3:48:24 AM UTC+2, Andrew Gerrand wrote:

Hello gophers,

We have just released go1.7beta1, a beta version of Go 1.6.

It is cut from the master branch at the revision tagged go1.7beta1.

Please help us by testing your Go programs with the release, and report any problems using the issue tracker:

    https://golang.org/issue/new

You can download binary and source distributions from the usual place:

    https://golang.org/dl/#go1.7beta1

To find out what has changed in Go 1.7, read the draft release notes:

    https://tip.golang.org/doc/go1.7

Documentation for Go 1.7 is available at:

    https://tip.golang.org/

Our goal is to release the final version of Go 1.7 on the 1st of August.

Cheers,

Andrew

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[dja...@gmail.com]

Hi,
wha are c++ compiler flags ?  any optimisation flag (O) ?
Thanks,
Jamil Djadala

[Seb Binet]

On Fri, Jun 3, 2016 at 1:37 PM, <dja...@gmail.com> wrote:

Hi,
wha are c++ compiler flags ?  any optimisation flag (O) ?

 https://github.com/sbinet-staging/3photons/blob/master/C%2B%2B/Makefile#L12

so, yes, optimisations are enabled (-O3)

I haven't written the C++ code: it's a translation from an old FORTRAN-77 physics simulation which (it seems) was used during the LEP data taking at CERN (circa 1980's).

I don't claim it is nice nor very efficient C++ code (but that's what has been used in some circles)

The fact that a simple and naive Go re-write (also single-threaded!) was faster is (IMHO) a testimony that Go is easier to get right than C++ and that the gc compiler is catching up.

(or that the original F77->C++ translator did a sloppier job than I did for the F77->C++->Go translation :P)

-s

[Fabien]

Thank you Go team! My number-crunching app got about twice faster with this release. This is very important to me as it might make the difference between having all the results I need before a deadline in 1 week vs not having them. Hurray!

Fabien

[Konstantin Khomoutov]

On Thu, 2 Jun 2016 11:47:41 +1000
Andrew Gerrand <a...@golang.org> wrote:

[...]

> To find out what has changed in Go 1.7, read the draft release notes:
> https://tip.golang.org/doc/go1.7

A small glitch in the release notes. The "Runtime" section looks like:

<h3 id="runtime">Runtime</h3>

<p>
All panics started by the runtime now use panic values
that implement both the builtin <a href="/ref/spec#Errors">error,
and
</a><a href="/pkg/runtime/#Error"><code>runtime.Error</code></a>,
as
<a href="/ref/spec#Run_time_panics">required by the language
specification</a>. </p>

with the "error, and" tech wrapped in an anchor element while
supposedly it should be just "error".

[...]

[Ian Lance Taylor]

Thanks, fixed by https://golang.org/cl/23735 .

Ian

[Yesudeep Mangalapilly]

Fantastic! Thank you. :)

[jonathan...@gmail.com]

Anyone else getting failures from running test only on go1.7beta1 that are failures internal?

On Wednesday, June 1, 2016 at 6:48:24 PM UTC-7, Andrew Gerrand wrote:

[Dave Cheney]

Is this building go 1.7, or in your code? Could you share some details please.

[Peter Weinberger]

https://golang.org/issue/15933

occurs when i try to build 1.7beta1 on mac or linux.

to continue insert t.Skip() in the failing test.

On Sun, Jun 5, 2016 at 1:21 AM, Dave Cheney <da...@cheney.net> wrote:

Is this building go 1.7, or in your code? Could you share some details please.

[jonathan...@gmail.com]

My mistake, this was a GOROOT issue.

[Dave Cheney]

You know what I'm going to say, :)

[Chris Hines]

Is the command "godoc -http=:6060" still supposed to host package docs locally? When I run that command it opens a browser for the go tour, and it doesn't serve any package docs.

[Tamás Gulácsi]

I can confirm this happens to me, too.
And it is annoying - I didn't know I've used that local server this much.

[Dave Cheney]

This is a known bug in beta1, https://github.com/golang/go/issues/15941. I think its already been fixed. 

[Michael Hudson-Doyle]

Go 1.7 beta 1 is now in my PPA at
https://code.launchpad.net/~gophers/+archive/ubuntu/archive (and
should be in the development version of Ubuntu within a day or two).

Cheers,
mwh