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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...
What is “thread local storage” in Python, and why do I need it?
...created a byte-code chunk that left no room for an interrupt signal to the CPU.
I thought atomic operations are chunks of Python byte code that does not give access to interrupts. Python statements like "running = True" is atomic. You do not need to lock CPU from interrupts in this case (I believe)...
A fast method to round a double to a 32-bit int explained
...t-of-order execution, altering the fp rounding mode generally seriales the CPU core and is quite expensive. So on a CPU like a Pentium-III or Pentium-IV, this overall cost is quite high -- a normal fp->int conversion is 10x or more expensive than this add+store+load trick.
On x86-64, however, fl...
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...
Difference between JVM and HotSpot?
...ed from the imaginary instruction set to the actual instruction set of the CPU of the host machine. This can be done on-the-fly by an interpreter. Or the bytecode can be fully compiled and cached, to run faster than through the interpreter, in a process known as Just-In-Time (JIT) compiling.
Over th...
Simulator or Emulator? What is the difference?
...virtualisation is a superset of emulation, in that can provide accelerated CPU support, exclusive hardware device access, etc.
– Lee B
Oct 18 '09 at 13:30
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NVIDIA vs AMD: GPGPU performance
... same value ($) cards.
In both cases, speeds were ~10x-30x comparing to a CPU.
I didn't test CUDA, but I doubt it could solve my random memory fetch problems magically. Nowadays, CUDA and OpenCL are more or less the same, and I see more future on OpenCL than on CUDA. The main reason is that Intel ...
Why are only a few video games written in Java? [closed]
... best with:
The biggest problem is that Java is really slow. On a pure cpu / memory / display / communications level, most modern cell phones should be considerably better gaming platforms than a Game Boy Advanced. With Java, on most phones you are left with about the CPU power of an original 4....
How can I store my users' passwords safely?
...usually stored together with the password hash" any additional storage and CPU requirements for a per-user salt are so microscopic, that they need not even be mentioned...)
– Inshallah
Mar 27 '10 at 21:55
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How do I measure time elapsed in Java? [duplicate]
...re; basically some implementations of nanoTime on some versions of OS/Java/CPU will use hardware CPU time stamp counter (TSC) . However this TSC may not be the same between cores/processors. If your thread is rescheduled to a different core partway through, you will end up with a start timestamp fro...