Re: Detecting Number of Available CPU Threads
On Feb 9, 2:37 am, Wardrop t...@tomwardrop.com wrote: That seems like what I'm after, thanks. I assume this would be pretty reliable across all platforms running the JVM. In .NET, on the other hand, this value is stored in System.Environment.ProcessorCount. Perhaps it would be worthwhile to make oft-requested information like this available via a standard API so ClojureCLR and any future ports can maintain consistency? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Detecting Number of Available CPU Threads
Hi, On Feb 9, 9:29 pm, Chouser chou...@gmail.com wrote: It may be worth noting that using 'send' to dispatch actions to an agent already takes into account the number of CPUs available. This essentially means it's safe to queue up sends on as many agents as you want -- hundreds, even thousands of agents -- regardless of how many CPUs are on your current host. I think hiding this information is a good thing. It allows to implement strategies like grand central dispatch. Just because there are x CPUs on a system, does not mean that they are to our disposal. (No. We are *not* the only running process in the world.) Sincerely Meikel -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Detecting Number of Available CPU Threads
On Mon, Feb 8, 2010 at 8:37 PM, Wardrop t...@tomwardrop.com wrote: That seems like what I'm after, thanks. I assume this would be pretty reliable across all platforms running the JVM. By the way, I did google the Java API with various keywords but never cam across this object property. It may be worth noting that using 'send' to dispatch actions to an agent already takes into account the number of CPUs available. This essentially means it's safe to queue up sends on as many agents as you want -- hundreds, even thousands of agents -- regardless of how many CPUs are on your current host. The same is *not* true of 'send-off' or 'future', which do not have bounds on their thread pool. --Chouser http://joyofclojure.com/ -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Detecting Number of Available CPU Threads
I'm wondering if there's anyway in Clojure, that one can detect the number of available processoring threads (ie. 4 core cpu with hyperthreading would equal 8 available threads). This will allow me to have a scalable processing app which can run on a single core CPU, or 250 core processor, without overwhelming the single core CPU with 250 threads (as an example). Cheers -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Detecting Number of Available CPU Threads
On 9 February 2010 11:29, Wardrop t...@tomwardrop.com wrote: I'm wondering if there's anyway in Clojure, that one can detect the number of available processoring threads (.availableProcessors (Runtime/getRuntime)) might be what you are after? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Detecting Number of Available CPU Threads
That seems like what I'm after, thanks. I assume this would be pretty reliable across all platforms running the JVM. By the way, I did google the Java API with various keywords but never cam across this object property. Thanks On Feb 9, 11:33 am, Timothy Pratley timothyprat...@gmail.com wrote: On 9 February 2010 11:29, Wardrop t...@tomwardrop.com wrote: I'm wondering if there's anyway in Clojure, that one can detect the number of available processoring threads (.availableProcessors (Runtime/getRuntime)) might be what you are after? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
