There are two basic ways to multi-thread in Java. Each logical task you create with these methods should run on a fresh core when needed and available. Method one: define a Runnable or Thread object (which can take a Runnable in the constructor) and start it running with the Thread.start() method. It will execute on … Read more
There is no such thing as “multiprocessor” or “multicore” programming. The distinction between “multiprocessor” and “multicore” computers is probably not relevant to you as an application programmer; it has to do with subtleties of how the cores share access to memory. In order to take advantage of a multicore (or multiprocessor) computer, you need a … Read more
I would give Erlang a try. Even though it will be a steeper learning curve, you will get more out of it since you will be learning a functional programming language. Also, since Erlang is specifically designed to create reliable, highly concurrent systems, you will learn plenty about creating highly scalable services at the same … Read more
Multi-CPU was the first version: You’d have one or more mainboards with one or more CPU chips on them. The main problem here was that the CPUs would have to expose some of their internal data to the other CPU so they wouldn’t get in their way. The next step was hyper-threading. One chip on … Read more
You can try using a “catchpoint” (catch throw) to stop the debugger at the point where the exception is generated. The following excerpt From the gdb manual describes the catchpoint feature. 5.1.3 Setting catchpoints You can use catchpoints to cause the debugger to stop for certain kinds of program events, such as C++ exceptions or … Read more
You can still do this in top. While top is running, press ‘1’ on your keyboard, it will then show CPU usage per core. Limit the processes shown by having that specific process run under a specific user account and use Type ‘u’ to limit to that user
In the 2009-2012 period, the following things have happened: 2012: From 2012, the parallel Haskell status updates began appearing in the Parallel Haskell Digest. 2011: Parallel and Concurrent Programming in Haskell, a tutorial. version 1.1 released by Simon Marlow Haskell and parallelism, mentioned in an article in the Economist magazine, Jun 2nd 2011. Parallel tree … Read more
You can do this with make – with gnu make it is the -j flag (this will also help on a uniprocessor machine). For example if you want 4 parallel jobs from make: make -j 4 You can also run gcc in a pipe with gcc -pipe This will pipeline the compile stages, which will … Read more