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0
votes
1answer
64 views

Searching a large file in Hadoop

I am new to Hadoop/Map Reduce and am thinking of solving the following problem: I have two files viz., f1 and f2. The file f1 is small (a few thousand records) and the file f2 is large (a few million ...
0
votes
0answers
21 views

CUDA Loop Question - Worthy of Unwinding?

It's a known fact that branching is bad for CUDA. The question I have is a little more specific. I have a (static) loop. Static here means that it follows the exact same path every time, and executes ...
0
votes
1answer
38 views

Parallel radix sort algorithm

I am trying to implement radix sort. While I understand the radix sort for serial implementation, I am confused about parallel implementation. I am trying to implement the algorithm given in ...
1
vote
0answers
23 views

Does OpenMp have support for Real Time Multiprocessor Computing?

I am working on a real time multiprocessor scheduling algorithm. I found very few results via google research related to it. A few simulators are available but are not robust enough. OpenMp is an ...
0
votes
0answers
64 views

Whats the best way to parallel my problem using Java API

I´m with trouble, because I want to make faster my code using threads, fork in join or any kind of parallel. I did a code using fork in join but I saw my arraylist isn´t getting the correct values. ...
-2
votes
1answer
155 views

Extracting data from log files

I will be extracting certain bits from log files using regular expressions to filter out bit of data. Initially I was going to do this with Python. I later started to think about the fastest way I can ...
0
votes
0answers
50 views

Report generator windows service polling database for work

I'm building a new report generator for our in-house survey system. (No I can not use any off-the-shelf software. These are highly customized reports.) I want to use Topshelf to host the generator as ...
0
votes
0answers
49 views

Help in finding the total time taken by the entire production?

I have a line object and each line object has an array of tasks associated with it.Each task has a start time and an end time.Each task also has a list of tasks which are its predecessors. So if all ...
2
votes
3answers
190 views

How to simulate and estimate long running application [closed]

We are building a large, modular application that is intended to run across multiple processors. I need to develop a method to estimate how long it will take to run all of the functions. I already ...
1
vote
0answers
158 views

Help/suggestions for Parallel assembly line scheduling (Dynamic programming)

I am working on a problem similar to the assembly line scheduling by dynamic programming.The issue is that unlike the classic problem where we have predefined stations now I only have information ...
0
votes
0answers
56 views

Testing for equivalence of two programs in different architectures (Sequential, Multi Processor, Multi Core)

I've found a question that I'm having trouble to realize. It's as follows: Consider the program P :: x := 1; y := 1; z := 1; u := 0; and the program Q :: x,y,z,u := ...
2
votes
3answers
157 views

Parallel.For Inconsistency results

I am using VB.net to write a parallel based code. I use Parallel.For to generate pairs of 500 objects or in combination C(500,2) such as the following code; but I found that it didn't always generate ...
1
vote
2answers
440 views

Memory allocation of Classes that don't have any global data and locks

static void Main(string[] args) { var c2 = new Class2(); var c3 = new Class3(); var c1 = new Class1(c2, c3); c1.Method1(); } class Class1 { ...
2
votes
6answers
290 views

Is an atomic action supposed to be deterministic?

I was reading about the at most once property that defines what an atomic action is and I've been curios about this example: x = 0, y = 0 x = y + 1 || y = y + 1 If we use the 'at most once' ...
0
votes
0answers
266 views

Parallel Programing in C#

I have a code where I have to read some Binary files in database. I wrote a For loop that iterate over my file path array, then it call a READ function that read that file into database. I run this ...
4
votes
1answer
258 views

Which parallel pattern to use?

I need to write a server application that fetches mails from different mail servers/mailboxes and then needs to process/analyze these mails. Traditionally, I would do this multi-threaded, launching a ...
5
votes
1answer
266 views

How can I benchmark concurrent key-value stores?

I have some concurrent key-value store implementations that are implemented with hash tables and search trees that I would like to compare. I would like to benchmark them with a real world application ...
1
vote
2answers
305 views

Relation of CPU Hz's and network speed in clusters

In cluster the Amdahl's law, Gustafson's law exists. I though that there might be some law which states the relation between CPU Hz's and network speed: maximum network speed after which no ...
1
vote
1answer
424 views

Parallel computing using xcode

I'm making mandelbrot fractals in C using Xcode and I want to use parallel computing but everything I've tried so far doesn't work. Such as This Question and other how to guides. Whats the easiest way ...
5
votes
1answer
228 views

Asynchronously returning a hierarchal data using .NET TPL… what should my return object “look” like?

I want to use the .NET TPL to asynchronously do a DIR /S and search each subdirectory on a hard drive, and want to search for a word in each file... what should my API look like? In this scenario I ...
-3
votes
1answer
1k views

How to select an appropriate Nvidia GPU for learning CUDA [closed]

What would be a good GPU to start learning CUDA on? Are any GPUs unsuitable?
5
votes
3answers
517 views

Cloud computing platforms only have one CPU. Does this mean I shouldn't use Parallel Programming?

Almost every cloud instance I can find only offers one CPU. Why is this only one CPU now, and should I expect this to increase in the future? Does this design impact my code design so that I exclude ...
4
votes
8answers
504 views

When should I use parallelism? [closed]

After asking this question, I got to realize that parallelism may not always be good. So far I can see that parallelism (under c#) is A little complicated code-wise Will probably insert some ...
46
votes
11answers
6k views

What kind of problems does MapReduce solve?

I have been reading about MapReduce for a while -- but what I can't understand is how someone would make a decision to use (or not use) MapReduce. I mean, what are the problem patterns that signal ...
3
votes
2answers
475 views

Parallel computing and mobile computing

I have been working as software developer for past 4 years on a variety of software products (Financial ERP system, Online Web development, Trading software and now a Supply Chain mgmt software). Most ...
5
votes
2answers
1k views

Debug multiprocessing in Python

What are some good practices in debugging multiprocessing programs in Python?
12
votes
13answers
1k views

What are some common examples of a Parallelizable problem? [closed]

I was just wondering if there were some "standard" examples that everyone uses as a basis for explaining the nature of parallel problems. What are some well-known problems out there that can see great ...
10
votes
3answers
585 views

Studying parallel programming

I'm currently finishing my Bachelor's degree in Computer Science and thinking a lot about which specialisation to choose in my Master's degree. One subject I'm particularly interested in is parallel ...
5
votes
1answer
2k views

Parallel programming library? (+ some features)

Note: this is a reposting as the question has been considered non-suitable for the Stack Overflow forum and should have been posted here. The original topic is there. I'd like to talk of ...
3
votes
4answers
977 views

Is there a canonical book on parallel programming with focus on C++ ? [closed]

I am looking for a good book about parallel programming with focus on C++. Something suitable for a person reasonably good in C++ programming, but with no experience in concurrent software ...