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Do any JVM's JIT compilers generate code that uses vectorized floating point instructions?
...import org.bytedeco.javacpp.*;
import org.bytedeco.javacpp.annotation.*;
@Platform(include = "Dot.h", compiler = "fastfpu")
public class Dot {
static { Loader.load(); }
static float[] a = new float[50], b = new float[50];
static float dot() {
float sum = 0;
for (int i =...
How to measure time taken by a function to execute
...result in very erronous results being displayed, especially on the Windows platform where results may be rounded+floored to the nearest 15ms boundary, resulting in weird stuff such as 0ms timings on tiny code bits.
– oligofren
Mar 6 '13 at 9:59
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CSS background image alt attribute
...ituations:
nowadays, Web browsers are available in a very wide variety of platforms with very different capacities; some cannot display images at all or only a restricted set of type of images; some can be configured to not load images. If your code has the alt attribute set in its images, most of ...
How to open a specific port such as 9090 in Google Compute Engine
...t.
For Cloud Console:
Go to the Firewall rules page in the Google Cloud Platform Console.
Click Create firewall rule.
Enter a Name for the firewall rule.
This name must be unique for the project.
Specify the Network where the firewall rule will be implemented.
Specify the Priority of the rule. ...
How do I force Postgres to use a particular index?
...
With over 30 years of experience on platforms such as Oracle, Teradata and MSSQL, I find the optimizer of PostgreSQL 10 not especially smart. Even with up-to-date statistics it generates less efficient execution plans than forced in a special direction. Providi...
What are the performance characteristics of sqlite with very large database files? [closed]
...
We are using DBS of 50 GB+ on our platform. no complains works great.
Make sure you are doing everything right! Are you using predefined statements ?
*SQLITE 3.7.3
Transactions
Pre made statements
Apply these settings (right after you create the DB)
PRAG...
Difference between a Structure and a Union
.... This program overwrote the 0xEF with 0x22 on my Mac, but there are other platforms where it would overwrite the 0xDE instead because the order of the bytes that make up the int were reversed. Therefore, when writing a program, you should never rely on the behavior of overwriting specific data in a...
'size_t' vs 'container::size_type'
...
size_t is defined as the type used for the size of an object and is platform dependent.
container::size_type is the type that is used for the number of elements in the container and is container dependent.
All std containers use size_t as the size_type, but each independent library vendor c...
What are major differences between C# and Java?
...antees that the result of floating point operations remain the same across platforms.
• Java supports checked exceptions for better enforcement of error trapping and handling.
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Timeout on a function call
... because signal.alarm and the related SIGALRM are not available on Windows platforms.
– Double AA
Aug 19 '11 at 16:20
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