It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 12 years ago.
I am looking to get instant energy consumption, in shell or C++
any ideas ?
Thanks
Your question could do with a bit more detail, but if I understand you correctly a program named Joulemeter does this the following way:
Joulemeter estimates the energy usage
of a VM, computer, or software by
measuring the hardware resources (CPU,
disk, memory, screen etc) being used
and converting the resource usage to
actual power usage based on
automatically learned realistic power
models.
That is one way to go. If you're just doing this for your own project, I guess you could throw together some hardware that measured from the wall socket and gave you the data that way. Maybe something like that exists already.
Well, if you have a Laptop you could use the answer presented for this similar question:
/usr/sbin/system_profiler SPPowerDataType | grep Wattage
Related
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I've written a program to generate a fractal, but my computer would take a week to compute it. Is there any online or otherwise, solution where I can run my code and have it compute quickly?
No, not to be rude and don't take this wrong. Nobody is going to let people use there full computer's resources over the web to let you run code, it will always be slower online. For free.
However VPS and Cloud-Computing options are available. They will be expensive for a really fast computer.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I want to prepare an iPhone app. A live stream will be coming for a moving camera (assume as a portable webcam) and I need to stream that live video to iPhone using FTP (assume we don't have internet in that area).
Any sort of help is appreciated.
The question is a good one, often asked by programmers world-wide. How to stream via the internet with no internet connection.
The accepted answer is using swallows. The airspeed velocity of a swallow is well-known among technical groups. Basically, what you do is package up your information, append the bytes to the swallow, and send it on its way. Beware. You'll need a lot of swallows.
Of course, the bandwith will depend on whether it's an African or European swallow, but let's not go there.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
This might be a really stupid question, but I can't find any info on this, and I can't find out what to search for.
How do you make something real time? For example, say we have a game, how does it run continuously without us calling a tick() method at different parts of the program?
If you are developing the program to run at a time in particular the best way I know of is to develop it to run at a particular loop rate using timed delays.
IE:
while(forever) {
do something
test how long it took
take up the remainder amount of time for the loop to run at a rate (ie 100Hz)
}
If you are desperate for real time applications you can develop and use QNX:
http://www.qnx.com/
But this certainly wouldn't be a good environment for programming games.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 11 years ago.
I was going through Scott Meyer's podcast on CPU CACHES AND WHY YOU CARE It seems this will make code run faster, is there any open source where such coding is done for reference.
Or anybody has example of design of data structures/algorithms based on CPU caches aware
Sure, the entire Linux kernel is implemented to be cache-aware.
For more details there is highly recommended paper What Every Programmer Should Know About Memory.
Linear algebra is sensitive to cache problems. The BLAS subroutines allow one to abstract away from these concerns
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 12 years ago.
I'm trying to pick out my next hackery project. It'll likely be one of the following:
A sparse radix trie Implementation with extremely fast set operations
A really good soft heap implementation
A bloomier filter implementation
A collection of small financial algorithms, such as deriving total returns given a set of dividends and minimal information about them.
But I can't choose. So I thought I'd put my fate in the hands of my peers. Which of those four would you find most useful? Most interesting to work on? Which do you think is the most needed?
I didn't know what a bloomier (maybe Bloom?) filter is until reading your question. Sounds cool and useful.