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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...tem_clock::now();
duration=chrono::duration_cast<std::chrono::nanoseconds>(endP-startP).count();
cout << "No Chain\t" << count << '\t' << (duration/1.0E9) << " sec \t"
<< (10000.0*size)/(duration) << " GB/s" << endl;
}
...
C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly
On Windows, clock() returns the time in milliseconds, but on this Linux box I'm working on, it rounds it to the nearest 1000 so the precision is only to the "second" level and not to the milliseconds level.
...
Functional programming - is immutability expensive? [closed]
...m is poor in that regard, which degrades average performance considerably.
Secondly, this algorithm uses list concatenation (instead of list construction) which is an O(n) operation. This doesn’t impact on the asymptotic complexity but it’s a measurable factor.
A third disadvantage is somewhat...
dispatch_after - GCD in Swift?
...usage:
let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(1 * Double(NSEC_PER_SEC)))
dispatch_after(delayTime, dispatch_get_main_queue()) {
print("test")
}
EDIT:
I recommend using @matt's really nice delay function.
EDIT 2:
In Swift 3, there will be new wrappers for GCD. See here: http...
Java Garbage Collection Log messages
...m a large server application:
[GC 325407K->83000K(776768K), 0.2300771 secs]
[GC 325816K->83372K(776768K), 0.2454258 secs]
[Full GC 267628K->83769K(776768K), 1.8479984 secs]
Here we see two minor collections followed by one major collection. The numbers before and after the arrow (e....
How do I grab an INI value within a shell script?
... This is not really a good solution. Think of having 2 [parameters.ini] sections with each having a ' database_version' variable. You get the value twice then.
– nerdoc
May 26 '15 at 12:19
...
Sleep until a specific time/date
...rogrammer, I think the solution is just to sleep for the correct number of seconds.
To do this in bash, do the following:
current_epoch=$(date +%s)
target_epoch=$(date -d '01/01/2010 12:00' +%s)
sleep_seconds=$(( $target_epoch - $current_epoch ))
sleep $sleep_seconds
To add precision down to n...
Trying to login to RDP using AS3
...hen you read bytes.
public function sendMcsData(): ByteArray {
trace("Secure.sendMcsData");
var num_channels: int = 2;
var dataBuffer:ByteArray=new ByteArray(); //RdpPacket_Localised dataBuffer = new RdpPacket_Localised(512);
// it's better to build the data buffer in the function, ...
Rank function in MySQL
...
Can you also let us know how is .php code exactly should be? I tried to follow, but above code does not work. How to input to .php format?
– creator
Apr 27 '15 at 12:00
...
Convert String to SecureString
How to convert String to SecureString ?
13 Answers
13
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