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  • White Paper on Parallel Processing

      I just ran across what I think is a newly published white paper on parallel  processing in SQL Server 2008 R2. The date is October 2010 but this is the first time I have seen it so I am not 100% sure how new it really is. Maybe you have seen it already but if not I recommend taking a look. So far I haven’t had time to read it ...
    Posted to Andrew Kelly (Weblog) by Andrew Kelly on December 10, 2010
  • Myth: SQL Server Caches a Serial Plan with every Parallel Plan

    Many people believe that whenever SQL Server creates an execution plan that uses parallelism, an alternative serial plan is also cached.  The idea seems to be that the execution engine then decides between the parallel and serial alternatives at runtime. I’ve seen this on forums, in blogs, and even in books.  In fairness, a lot of the ...
    Posted to Page Free Space (Weblog) by Paul White on November 4, 2010
  • So when is Parallel SQL arriving? Denali?

    For some time, Intel C/C++ compilers addons had the ability to automaticly generate parallel code (as in the coder does not have to do it). I also recall hearing some thing about Parallel LINQ, but thats outside the scope of my narrow view of the world. I was just browsing a Sybase script (for the TPC-H benchmark) and notice the following, which ...
    Posted to Joe Chang (Weblog) by jchang on October 4, 2010
  • Six reasons you should be nervous about parallelism

    Don't get me wrong; parallel processing is great.  And with SQL Server in particular, there are many benefits to taking advantage of the power of multiple CPUs.  However, we have all had cases where what looked like parallelism was actually hurting us (you remember turning off hyperthreading on SQL Server boxes, right?), and cases ...
    Posted to Aaron Bertrand (Weblog) by AaronBertrand on March 21, 2009
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