Linked by Thom Holwerda on Sun 2nd Dec 2007 22:41 UTC, submitted by Amit Bahree
"With all the modern systems using multi-core and multi-processor systems, tapping this new power is an interesting challenge for developers. It also fundamentally starts the shift on how your 'average Joe' interacts with a computer and things that he/she expects to be able to. First, check out the 'Manycore Shift' paper from Microsoft. Second checkout the Parallel Extensions to .NET 3.5 which is a programing model for data and task parallelism. It also helps with coordination on parallel hardware (such as multi-core CPU's) via a common work schedules. There is also a new Parallel Computing Dev Center on MSDN. Before you download the December 2007 CTP, make sure you have the RTM bits of the .NET 3.5 runtime. There are also a number of bugs fixed in this new CTP. If you want a quick introduction then check out a few videos available."
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Member since:2005-07-06
Interesting, and thanks for correcting me. I've always been under the impression that CLR = MS's implementation of the CLI, which in turn = a good part of the .Net Framework and therefore the same version. MS's versioning scheme is cryptic to say the least, ala according to your info the following is true:
- We're on v3.5 of the .Net Framework
- We're on v2.0 of the CLR
- C# is in v3.0
Are you sure about Java inlining virtual methods? I just did a quick Google and wasn't able to confirm that. I thought that by definition, a virtual method cannot be inlined which is why a lot of folks were concerned about all methods being virtual in Java by default. I'm by no means versed in compiler theory, but I don't see how a virtual method can be inlined.
Member since:2005-07-07
http://portal.acm.org/citation.cfm?id=353191
Method devirtualization has been around in the JVM for quite a while. That paper (sadly requires a subscription) does a moderately good job of covering the various techniques used.
News
Linked by Thom Holwerda on 05/22/13 22:23 UTC
"Sony gave the PS4 50% more raw shader performance, plain and simple (768 SPs @ 800MHz vs. 1152 SPs & 800MHz). Unlike last generation, you don't need to be some sort of Jedi to extract the PS4's potential here. The Xbox One and PS4 architectures are quite similar, Sony just has more hardware under the hood. Weâll have to wait and see how this hardware delta gets exposed in games over time, but the gap is definitely there. The funny thing about game consoles is that itâs usually the lowest common denominator that determines the bulk of the experience across all platforms. On the plus side, the Xbox One should enjoy better power/thermal characteristics compared to the PlayStation 4. Even compared to the Xbox 360 we should see improvement in many use cases thanks to modern power management techniques." AnandTech does its usual in-depth thing.
Linked by Thom Holwerda on 05/22/13 13:38 UTC
"The Verge has learned that HTC's Chief Product Officer, Kouji Kodera, left the company last week. Kodera was responsible for HTC's overall product strategy, which makes the departure especially notable on the heels of the global launch of the make-or-break One. It's not just Kodera. In the past three-odd months, HTC has lost a number of employees in rapid succession." I really hope HTC pulls it together.
Linked by Thom Holwerda on 05/22/13 13:30 UTC, submitted by JRepin
"It is with huge pleasure that the Debian GNU/Hurd team announces the release of Debian GNU/Hurd 2013. This is a snapshot of Debian 'sid' at the time of the Debian 'wheezy' release (May 2013), so it is mostly based on the same sources. It is not an official Debian release, but it is an official Debian GNU/Hurd port release." Important note: 75% of Debian packages are supported bu Debian GNU/Hurd. Impressive.
Linked by Thom Holwerda on 05/21/13 22:06 UTC
"The first killer app was VisiCalc. This early spreadsheet turned the Apple II from a hobbyist toy to a business computer. VisiCalc came with room for improvement, though. In addition, a new architecture and operating system, the Intel-based IBM PC and MS-DOS, also needed a spreadsheet to be taken seriously. That spreadsheet, released in early 1983, would be Lotus 1-2-3, and it would change the world. It became the PC's killer app, and the world would never be the same. On May 14, IBM quietly announced the end of the road for 1-2-3, along with Lotus Organizer and the Lotus SmartSuite office suite. Lotus 1-2-3's day is done." Impressive 30 year run.
Linked by Thom Holwerda on 05/21/13 21:45 UTC
"There's a disconnect between how Apple CEO Tim Cook sees his company's tax strategies and how some members of the US Senate view it. That became clearer than ever today after Cook and two other Apple executives testified before Congress, explaining why they're holding most of their international income in Irish subsidiaries like Apple Operations International, which declare no tax residency anywhere in the world. AOI hasn't filed a tax return anywhere in the world for the last five years, yet it earned $30 billion in income from 2009 to 2012, according to a Senate report released yesterday." Just because something is legal, doesn't mean it's just. Apple, Google, Microsoft, and many more - these companies might not be breaking any laws, but it's obvious to anyone that what they are doing is scummy.
Linked by Thom Holwerda on 05/21/13 15:53 UTC
The new WebKit Opera for Android has been released. "Opera 14 for Android is built on top of Chromium 26, with a total overhaul of the UI in native code, making it fit well with the latest Android design guidelines. Go get the build from Google Play or point your browser to m.opera.com, and give it a spin!"
Linked by Thom Holwerda on 05/20/13 22:43 UTC
The Verge pointed me to a blog post by Leap Motion - which reveals how their Kinect-like motion control works with Windows 8. "From the second you plug in your Leap Motion Controller, you'll be able to browse the web and interact with your computer just by moving your hands and fingers in the air. With Leap Motion technology and Windows, you can do everything that's possible with multi-touch inputs - without actually touching anything. This also means that existing applications in Windows 7 and 8 will respond to your natural hand and finger movements. Soon, we'll show you how Leap Motion will work with Mac OS X." Quite cool.
Linked by Thom Holwerda on 05/20/13 21:50 UTC
PocketNow interviews Marc Dillon, and there's an interesting note about why Jolla is keeping the display properties under wraps: "We're leaving some of those details out because we do understand that there are a lot of really big players in the market and they tend to take certain components in the market and dominate them. We created the ability to actually be able to run Sailfish on multiple hardware displays and be able to swap components, so this is part of the demand and supply planning phase. We are committed to this industrial design which is a 4.5-inch display, an 8 megapixel camera on the back and a front-facing camera at the front, and the exact specs of the display we'll provide when we're close to delivery." Something you rarely hear anything about.
Linked by Thom Holwerda on 05/19/13 23:15 UTC
"This is my NeXTstation Turbo Color booting the Mac System 7.1 Operating System using a hardware add-on called 'Daydream'. The Daydream has a Mac ROM and a few custom ICs in it and hooked up to the NeXTs DSP port. Turns your NeXT into a full fledged 68k powered Mac." So cool.
Linked by Thom Holwerda on 05/19/13 23:11 UTC, submitted by Drumhellar
"The NetBSD Project is pleased to announce NetBSD 6.1, the first feature update of the NetBSD 6 release branch. It represents a selected subset of fixes deemed important for security or stability reasons, as well as new features and enhancements. Please note that all fixes in the prior security/bugfix updates (NetBSD 6.0.1 and 6.0.2) are also in 6.1."More News »
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Member since:
2006-03-01
No. If you run a low level program such as http://www.codeproject.com/dotnet/DetectDotNet.asp to enumerate the available CLRs on a machine where .NET framework 3.5 is installed, you get the following:
Is .NET present : Yes
Root Path : C:WindowsMicrosoft.NETFramework
Number of CLRs detected : 2
CLR versions available :-
1.1.4322
2.0.50727
Press any key...
If you use shared mutable state for communication between threads, you have not much choice but to use locks.
But there are safer alternatives such as message passing. Of course somewhere deep in the message queue code there will still be a lock or some other low level synchronization primitive. But an application programmer will never have to mess with that. See the BeOS API for pervasive use of message queues.
The biggest performance problem is this: http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.asp.... This can lead to a factor 5 to 10 performance degradation compared to C++ when doing numerically intensive code. Still much better than java though, since java does not have structs at all.
Fortunately, this will be addressed in the next (3.0) release of the runtime.
But there are various optimizations that java VMs have been doing for ages that the CLR does not do, such as virtual method inlining. And the CLR also does not even attempt to vectorize code on CPUs with SSE3.
Edited 2007-12-03 14:03