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c# Programming Glossary: cpusIs shifting bits faster than multiplying and dividing in Java? .NET? http://stackoverflow.com/questions/1168451/is-shifting-bits-faster-than-multiplying-and-dividing-in-java-net than multiplication and division operations on most all CPUs if you happen to be using a power of 2. However it can reduce..
Why must “stride” in the System.Drawing.Bitmap constructor be a multiple of 4? http://stackoverflow.com/questions/2185944/why-must-stride-in-the-system-drawing-bitmap-constructor-be-a-multiple-of-4 In other words an address that's a multiple of 4. On early CPUs having that first byte mis aligned would cost extra CPU cycles.. 4 avoids that. This isn't a real concern anymore on modern CPUs now alignment to the cache line boundary is much more important...
Lock-free multi-threading is for real threading experts http://stackoverflow.com/questions/2528969/lock-free-multi-threading-is-for-real-threading-experts correct load store ordering . Contrary to one's intuitions CPUs are free to reorder memory reads writes they are very smart.. it does not mean that it will actually happen earlier. CPUs can process instructions out of order and they especially like.. concurrent hash tables do and seem to scale well to 750 CPUs. If you are not afraid to venture into Linux territory the following..
How do I spawn threads on different CPU cores? http://stackoverflow.com/questions/32343/how-do-i-spawn-threads-on-different-cpu-cores more threads or not depending on the number of present CPUs. Edit In addition as it has been already mentioned the OS is..
Why doesn't this code demonstrate the non-atomicity of reads/writes? http://stackoverflow.com/questions/3679209/why-doesnt-this-code-demonstrate-the-non-atomicity-of-reads-writes confident given these results that at least the Intel x86 CPUs provide atomicity of double load store operations regardless..
http://stackoverflow.com/questions/417568/float-vs-double-performance is faster than double applied 100 years ago when most CPUs didn't have built in FPUs and few people had separate FPU chips..
WaitAll for multiple handles on a STA thread is not supported http://stackoverflow.com/questions/4192834/waitall-for-multiple-handles-on-a-sta-thread-is-not-supported a standard WPF project . private void Search const int CPUs 2 var doneEvents new ManualResetEvent CPUs Configure and launch.. const int CPUs 2 var doneEvents new ManualResetEvent CPUs Configure and launch threads using ThreadPool for int i 0 i.. and launch threads using ThreadPool for int i 0 i CPUs i doneEvents i new ManualResetEvent false var f new Indexer..
How do I implement the Sieve Of Eratosthenes using multithreaded C#? http://stackoverflow.com/questions/4700107/how-do-i-implement-the-sieve-of-eratosthenes-using-multithreaded-c and The Sieve of Atkin are hard to scale over multiple CPUs because the implementations I've seen uses a list of integers..
A reproducable example of volatile usage http://stackoverflow.com/questions/6164466/a-reproducable-example-of-volatile-usage itself. I can rephrase my question. Does JITer or x86 CPUs reorder read write operations AND is there a way to demonstrate..
http://stackoverflow.com/questions/6977218/parallel-foreach-can-cause-a-out-of-memory-exception-if-working-with-a-enumera keeps starting tasks trying hard to keep all CPUs busy. Yet no matter how many tasks are running in parallel there.. ParallelOptions.MaximumDegreeOfParallelism 2 use two CPUs or 50 CPU utilization ParallelOptions.MaximumDegreeOfParallelism.. ParallelOptions.MaximumDegreeOfParallelism 4 use all CPUs or 100 CPU utilization If it behaves like this then you can..
Monitoring Garbage Collector in C# http://stackoverflow.com/questions/9669963/monitoring-garbage-collector-in-c-sharp thread on each CPU in parallel. You really want multiple CPUs for this to work well. While the server version uses multiple..
How can I get CPU load per core in C#? http://stackoverflow.com/questions/2938629/how-can-i-get-cpu-load-per-core-in-c 0 _Total total load of first cpu _Total total load of all cpus not verified would not recommend to rely on it untill further..
http://stackoverflow.com/questions/375011/utilizing-the-gpu-with-c-sharp get more processing power out of my grid. I am using all cpus cores is it possible to utilize the GPU with C#. Anyone know..
Should i use ThreadPools or Task Parallel Library for IO-bound operations http://stackoverflow.com/questions/5213695/should-i-use-threadpools-or-task-parallel-library-for-io-bound-operations CPU Win7 32 runs under VMWare Test Environment 1 physical cpus 1 cores 1 logical cpus. Will be parsing a total of 10 feeds... VMWare Test Environment 1 physical cpus 1 cores 1 logical cpus. Will be parsing a total of 10 feeds. ________________________________________________________________________________.. CPU WinXP runs under VMWare Test Environment 1 physical cpus NotSupported cores NotSupported logical cpus. Will be parsing..
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