On Sunday, 22 December 2013 at 09:04:18 UTC, Larry wrote:
The more I use D, the more I like it.
Is there a way to get cpu usage to dynamically set the parallel
options ?
E.g : I have a dual core, if cpu usage is superior than x, then
blah.
It would be interesting to :
- to be able to set the execution logic based on the cpu
capability
- as a consequence of the latter, setting the nice value of the
current thread dynamically.
- As a consequence of both : to avoid the cpu to burn.
Conclusion :
So it would be useful to have a "std" way to set the nice of
the pid, and get the cpu usage and eventually deciding on which
core -obviously the least busy- the parallel will start on and
then, eventually, deploy to.
Did I miss a hidden functionality that already does this ?
Thanks
I don't think there is a way to do this in D right now. Can you
do it in C? If so, you can always call the necessary functions
yourself. For example, phobos calls sysconf on linux to figure
out the number of CPUs:
https://github.com/D-Programming-Language/phobos/blob/19bed560cd7f85f46fe4c2db787cf44ed6439223/std/parallelism.d#L141
If there are other native APIs to do what you want from C, you
can always call them from D too, but I don't believe there is
already a std way to do this.
