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When should I use the “strictfp” keyword in java?
...lations need to be deterministic no matter what the underlying hardware or CPU is. What's the trade-off? Most likely execution time.
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NSOperation vs Grand Central Dispatch
...down of these NSOperations was accounting for a significant portion of the CPU cycles in the running application, and was slowing things down. I replaced these with simple blocks and a GCD serial queue, and that overhead disappeared, leading to noticeably better rendering performance. This wasn't th...
What do people find difficult about C pointers? [closed]
...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 ...
Understanding dispatch_async
... the system has taken your implication that those tasks need to get to the CPU as quickly as possible.
Note also that I say "will begin executing in order", but keep in mind that as concurrent queues things won't necessarily FINISH executing in order depending on length of time for each task.
As ...
What is Turing Complete?
... together to allow for all of those nice things that you mention. E.g. the CPU produces "tape" for the GPU to read so that it can write "tape" for the monitor so that the monitor can write "tape" to the user. Likewise, the CPU could produce "tape" for the hard drives, NICs, sound cards, etc.
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HashSet vs. List performance
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@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...
Why is IntelliJ 13 IDEA so slow after upgrading from version 12?
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Disabling the subversion plugin took my cpu down from 100% to less than 2%. If your IntelliJ 13 is slow it is probably a plugin, this should be the accepted answer.
– pllee
Jun 6 '14 at 15:22
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Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...p://glslsandbox.com/e#207.3
This kind of 2D display would only run on the CPU, not the GPU, with a 2D canvas. All of the computations would be implemented in JavaScript, and would not be as parallel as the GPU even with the help of web workers. This is just one example of course, all kinds of int...
Which parallel sorting algorithm has the best average case performance?
...ld):
Parallel sorting pattern
Many-core GPU based parallel sorting
Hybrid CPU/GPU parallel sort
Randomized Parallel Sorting Algorithm with an Experimental Study
Highly scalable parallel sorting
Sorting N-Elements Using Natural Order: A New Adaptive Sorting Approach
Update for 2013:
Here is the ble...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...据读取完毕后，这个的数据就加载完毕了。这里还有一个问题，程序根据这个FAT表的簇号依次读取每个簇，则程序怎么知道一个簇读取完毕后这个文件就算读取完毕了？一般地，每个一个记录值为下列表中值，则说明已经读到文...