Barney's Blog

Blog archive

Multi-Core Multi-Problems

Multi-core processors have such promise. Imagine: Instead of one CPU, you have two, four, eight, 16 or perhaps many more. Why, your performance would multiply! But performance increases aren't linear -- not even close.

I looked into this subject and found it stunningly complex. The bottom line is that unless a program is specifically designed for cores, there isn't a huge performance increase. Sometimes, apps even run slower because the clock speed on the multi-cores is slower.

Now there's another issue holding back multi-core: It seems that multi-cores can't efficiently use memory. The CPU may be ready to grind away, but the memory can't respond fast enough. One solution? Putting memory right on top of each CPU. Interesting.

Do you have a dual- or multi-core machine? And if so, how does it work? Share your experience at dbarney@redmondmag.com.

Posted by Doug Barney on 12/10/2008 at 1:16 PM


Featured

  • Microsoft Previews New App Reporting and Consent Tools in Azure AD

    Microsoft last week described a few Azure Active Directory improvements for organizations wanting to connect their applications to Microsoft's identity and access service.

  • Free Software Foundation Asks Microsoft To Release Windows 7 Code

    The Free Software Foundation this week announced that it has established a petition demanding that Microsoft release its proprietary Windows 7 code as free software.

  • Managing Multiple Remote Connections in One Place with mRemoteNG

    If you're juggling multiple remote connections daily, this is the utility for you. Brien walks through the steps to use mRemoteNG, from installation to deployment.

  • Microsoft Unveils Plan To Push Bing to Office 365 ProPlus Users

    Microsoft on Tuesday unveiled plans to deliver an extension that will change the default search engine to Bing in both Google Chrome and Mozilla Firefox browsers for Office 365 ProPlus subscribers.

comments powered by Disqus

Office 365 Watch

Sign up for our newsletter.

Terms and Privacy Policy consent

I agree to this site's Privacy Policy.