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Why are C character literals ints instead of chars?
...A' from this main memory into a register, which one would you read?
Some CPUs may only directly support reading a 16 bit value into a 16 bit register, which would mean a read at 20 or 22 would then require the bits from 'X' be cleared out, and depending on the endianness of the CPU one or other wo...
Spark java.lang.OutOfMemoryError: Java heap space
...uch mem you're using)
Try using more partitions, you should have 2 - 4 per CPU. IME increasing the number of partitions is often the easiest way to make a program more stable (and often faster). For huge amounts of data you may need way more than 4 per CPU, I've had to use 8000 partitions in some c...
Concurrent.futures vs Multiprocessing in Python 3
...ay eventually frustrate you in ways the richer interfaces won't.
So far as CPU-bound tasks go, that's way too under-specified to say much meaningful. For CPU-bound tasks under CPython, you need multiple processes rather than multiple threads to have any chance of getting a speedup. But how much (i...
Is there any difference between GROUP BY and DISTINCT
...---------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
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| 0 | SELECT STATEMENT | | 58 | 174 | 44 (19)| 00:00:01 |
| 1 | HASH GROUP BY | | 58 | 174 | 4...
What resources are shared between threads?
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about point no 2 above : For threads also CPU maintains a context.
– Jack
May 2 '13 at 6:14
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Is MD5 still good enough to uniquely identify files?
...ower that the probability of the comparison failing due to glitches in the CPU generated by normal solar gamma ray emissions. And don't forget that often the only source of the file is sitting on the other side of the world inside a web server, and the only independent piece of information you have ...
Async/Await vs Threads
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Worth mentioning await Task.Run for cpu-bound work. If I understand correctly, that sometimes accomplishes what one would otherwise create a thread, or a background worker, to do.
– ToolmakerSteve
Jun 27 '18 at 5:26
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How to mount a host directory in a Docker container
...t interfaces -a, --attach=[]: Attach to stdin, stdout or stderr. -c, --cpu-shares=0: CPU shares (relative weight)
– Kishore Vaishnav
May 4 '14 at 16:40
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Is there a way to iterate over a range of integers?
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Debating the runtime performance of nanosecond CPU operations, while common in Goland, seems silly to me. I'd consider that a very distant last consideration, after readability. Even if CPU performance were relevant, the contents of the for loop will almost always swamp w...
recursion versus iteration
... course every recursion can be modeled as a kind of loop : that's what the CPU will ultimately do. And the recursion itself, more directly, means putting the function calls and scopes in a stack. But changing your recursive algorithm to a looping one might need a lot of work and make your code less ...