Re: "Shark" JIT correction [was: Re: [Fwd: FWN/Issue133]]

[Paul W. Frields]

On Sun, 2008-07-27 at 11:58 -0400, Oisin Feeley wrote:
>  On Wed, 23 Jul 2008 19:26:48 -0400, "Paul W. Frields"
>  <stickster(a)gmail.com&gt; said:
>  > -------- Forwarded Message --------
>  > > From: Gary Benson <gbenson(a)redhat.com&gt;
>  > > To: webmaster(a)fedoraproject.org
>  > > Subject: FWN/Issue133
>  > > Date: Wed, 23 Jul 2008 10:38:20 +0100
>  > > 
>  > > Hi,
>  > > 
>  > > I have a minor correction.  I was just reading FWN 133, and in this bit:
>  > > 
>  > >   http://fedoraproject.org/wiki/FWN/Issue133#Java.2C_So_Many_Free_Choices
>  
>  <snip correction>
>  
>  > For the editors -- Is this worth considering a correction?
>  > 
>  > Paul
>  
>  It certainly is. I really appreciate the time that Gary took to clear up
>  this confusion and am including the following erratum in this weeks
>  FWN#136.  It's great to get feedback from the experts. I hope the
>  following is more accurate.
>  
>  Erratum: FWN#133 "Shark" is a JIT not a VM
>  
>  GaryBenson kindly corrected an error in FWN#133 "Java, So Many Free
>  Choices"[1] which reported on the work being done by Red Hat engineers
>  to expand the availability of a FOSS Java across more architectures. The
>  gist of the correction is that ''shark'' is not a Virtual Machine(VM) as
>  stated in the article. Gary explained that OpenJDK is composed of a VM
>  named "HotSpot" and a class library. "HotSpot" runs on a limited
> number
>  of architectures and so there have been two independent attempts to
>  increase VM coverage. One of these is named ''cacao'' and while it was a
>  promising project it was uncertain how well it would work. The other is
>  a Red Hat initiative to explicitly port HotSpot to more architectures by
>  providing an interpreter named ''zero''. As ''zero'' is
> solely an
>  interpreter it is slow and in need of a JIT. This JIT could well end up
>  being ''Shark''. Thanks to Gary for taking the time to clarify this
>  point. We encourage readers to correct important technical issues and
>  misunderstandings and can be contacted via &quot;news(a)fedoraproject.org&quot;.
>  
>  [1]
>  http://fedoraproject.org/wiki/FWN/Issue133#Java.2C_So_Many_Free_Choices  
What a great way to seize the opportunity, Oisin -- making sure readers
know they can write in with corrections!  Well done.

-- 
Paul W. Frields
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