...d" to (x64). This "bus lock" statement locks the bus to prevent another CPU from accessing the bus while the calling CPU does its operation. Now, take a look at the C# lock() statement's IL. Here you will see calls to Monitor in order to begin or end a section. In other words, .Net lock() stat...

...constant folding, transformation of a switch statement into binary search, etc. Thus the benefits to be gained by allowing the compiler to optimize data structures appear to be less tangible than traditional compiler optimizations. ...

...le variable will be read from the computer's main memory, and not from the CPU cache, and that every write to a volatile variable will be written to main memory, and not just to the CPU cache. 2) transient keyword cannot be used along with static keyword but volatile can be used along with static. ...

... a new `tqdm` instance with `pandas` # (can use tqdm_gui, optional kwargs, etc.) tqdm.pandas() # Now you can use `progress_apply` instead of `apply` df.groupby(0).progress_apply(lambda x: x**2) In case you're interested in how this works (and how to modify it for your own callbacks), see the examp...

... Makers go to huge lengths to make sure the silicon, solder, encapsulation etc doesn't contain any alpha or beta emitters. – Martin Beckett Apr 6 '10 at 3:12 16 ...

...ng a bit too deep in their answers. An understanding of scheduling, actual CPU operations, or assembly-level memory management isn't really required. When I was teaching, I found the following holes in students' understanding to be the most common source of problems: Heap vs Stack storage. It is ...

...predicted. This can cause a large pipeline bubble as the processor cannot fetch any instructions until the indirect jump (the call through the function pointer) has retired and a new instruction pointer computed. So, the cost of a virtual function call is much bigger than it might seem from looking ...

...the only CORRECT algorithm for converting sRGB images, as used in browsers etc., to grayscale. It is necessary to apply an inverse of the gamma function for the color space before calculating the inner product. Then you apply the gamma function to the reduced value. Failure to incorpor

... @hypehuman the CPU cannot work directly on data in the system memory but pulls in data from the memory into its cache to work on. There is a significant delay between the request for memory to be moved and the memory actually arriving so th...

...And it deals better with multithreading issues (such as avoiding deadlocks etc.). And of course it is usually better to use well-tested standard code instead of some homemade solution. share | impro...