I'm working on college project. I have to develop distributed computing system. And i decided to do some research to make this task fun :) I've found MPAPI and MPI.NET libraries. Yes, they are .NET libraries(Mono, in my case). Why .NET ? I'm choosing between Ada, C++ and C# so to i've choosed C# because of lower development time. I have...
I would like to use the new concurrent collections in .NET 4.0 to solve the following problem. The basic data structure I want to have is a producer consumer queue, there will be a single consumer and multiple producers. There are items of type A,B,C,D,E that will be added to this queue. Items of type A,B,C are added to the queue in th...
Hi, I've been trying to access the parallel port with pyParallel, which is in the same sourceforge as PySerial: http://sourceforge.net/projects/pyserial/files/ I'm getting a WidowsError: exception: priviledged instruciton. Has anyone used this module before? import parallel p = parallel.Parallel() Traceback (most recent call last): ...
I have the following code: #pragma omp parallel sections private(x,y,cpsrcptr) firstprivate(srcptr) lastprivate(srcptr) { #pragma omp section { //stuff } #pragma omp section { //stuff } } According to the Zoom profiler, two threads are created, one thread executes both the sections, and the other ...
The following code creates the correct number of files, but every file contains the contents of the first list. Can anyone spot what I've done wrong please? private IList<List<string>> GetLists() { // Code omitted for brevity... } private void DoSomethingInParallel() { var lists = GetLists(); var tasks = new List<Task>(); var...
I'm trying to parallelize the element by element multiplication of two matrices in F#. I can't quite figure it out thought. I keep trying to create tasks but it never wants to compile. My non-working messy code is the following: let myBigElemMultiply (m:matrix) (n:matrix) = let AddTwoRows (row:int) (destination:matrix) (source1:matri...
I'm writing a book on multicore programming using .NET 4 and I'm curious to know what parts of multicore programming people have found difficult to grok or anticipate being difficult to grok? ...
We have a fairly simple program that's used for creating backups. I'm attempting to parallelize it but am getting an OutOfMemoryException within an AggregateException. Some of the source folders are quite large, and the program doesn't crash for about 40 minutes after it starts. I don't know where to start looking so the below code is...
I heard that the Task Parallel Library can be used in a .Net 3.5 project. Is this correct, and if yes, how do I use it? In .Net 4.0, it resides in System.Threading, but when I select .Net 3.5 as the target in Visual Studio 2010, I don't get access to classes like Parallel and the Parallel loops. ...
I'm trying to execute a SwingWorker (SubWorker) from another SwingWorker (MainWorker), and then I want the MainWorker to wait for the SubWorker to complete. In the mean time, the MainWorker should update itself according to property changes of the SubWorker. public class MainWorker extends SwingWorker<Void,Void> { public Void doInBa...
What are the best IDE's / IDE plugins / Tools, etc for programming with CUDA / MPI etc? I've been working in these frameworks for a short while but feel like the IDE could be doing more heavy lifting in terms of scaling and job processing interactions. (I usually use Eclipse or Netbeans, and usually in C/C++ with occasional Java, and ...
I am tasked with rewriting our internal conversion software from vb6 to C# .net 4. The software will take a data source (it could be a flat file, mySQL, MS SQL, Access) and put it in to our MS SQL format. So yes I as the client I need to touch all 4,000,000 rows. Right now I am writing a MS SQL -> MS SQL module. Because I need to do many...
I am looking for good recommendations for scalable and/or parallel large graph analysis libraries in various languages. The problems I am working on involve significant computational analysis of graphs/networks with 1-100 million nodes and 10 million to 1+ billion edges. The largest SMP computer I am using has 256 GB memory, but I also...
I'm looking for Java libraries/applications which are parallel and feature objects that can be queried in parallel. That is, there is/are objects in which multiple types of operations can be made from different threads and these will be synchronized. It would be helpful if someone could ideas of where I could find such applications as w...
My application of MPI has some process that generate some large data. Say we have N+1 process (one for master control, others are workers), each of worker processes generate large data, which is now simply write to normal file, named file1, file2, ..., fileN. The size of each file may be quite different. Now I need to send all fileM to r...
Hi, I got a C++ program (source) that is said to work in parallel. However, if I compile it (I am using Ubuntu 10.04 and g++ 4.4.3) with g++ and run it, one of my two CPU cores gets full load while the other is doing "nothing". So I spoke to the one who gave me the program. I was told that I had to set specific flags for g++ in order t...
Hi All, I'm using .Net 4.0 parallel library. The tasks I execute, ask to run some other task, sometimes synchronously and sometimes asynchronously, depending on some conditions which are not known in advanced. For async call, i simply create new tasks and that's it. I don't know how to handly sync call: how to run it from the same threa...
What's the status of multicore programming in Haskell? What projects, tools, and libraries are available now? What experience reports have there been? ...
When I run or in a tag ant multiplexes the logs mixing the output of each task together. I'd like something more easily read/grokked. I have tried the following approaches and they are better than nothing, but still not what I'm looking for. The following echos the non-interleaved log output at the end of the log, but it also ha...
We have a lot of tests. I can break these up so that they run on seperate agents after an initial compile build happens, but is there a way I can recombine these results? Having 8 build configurations that all need to be green makes it hard to see if you've got one ubergreen build. Is there a way in TeamCity to recombine / join builds ...