Cilk or Cilk++ or OpenMP

Posted by Aman Deep Gautam on Stack Overflow See other posts from Stack Overflow or by Aman Deep Gautam
Published on 2012-06-08T16:37:32Z Indexed on 2012/06/08 16:40 UTC
Read the original article Hit count: 243

Filed under:

parallel-processing

|

openmp

|

Cilk

I'm creating a multi-threaded application in Linux. here is the scenario:

Suppose I am having x instance of a class BloomFilter and I have some y GB of data(greater than memory available). I need to test membership for this y GB of data in each of the bloom filter instance. It is pretty much clear that parallel programming will help to speed up the task moreover since I am only reading the data so it can be shared across all processes or threads.

Now I am confused about which one to use Cilk, Cilk++ or OpenMP(which one is better). Also I am confused about which one to go for Multithreading or Multiprocessing

© Stack Overflow or respective owner

Related posts about parallel-processing

Intel Core 2 duo / AMD athlon X2 parallel processing capability

as seen on Super User - Search for 'Super User'
Does Intel Core 2 duo/ AMD athlon X2 really have 2 separate processors? i.e are they capable of doing real parallel processing? What I don't understand is the difference when somebody says Cores or Processors. >>> More
JVM (embarrasingly) parallel processing libraries/tools

as seen on Stack Overflow - Search for 'Stack Overflow'
I am looking for something that will make it easy to run (correctly coded) embarrassingly parallel JVM code on a cluster (so that I can use Clojure + Incanter). I have used Parallel Python in the past to do this. We have a new PBS cluster and our admin will soon set up IPython nodes that use PBS… >>> More
Parallel processing in R 2.11 Windows 64-bit using SNOW not quite working

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm running R 2.11 64-bit on a WinXP64 machine with 8 processors. With R 2.10.1 the following code spawned 6 R processes for parallel processing: require(foreach) require(doSNOW) cl = makeCluster(6, type='SOCK') registerDoSNOW(cl) bl2 = foreach(i=icount(length(unqmrno))) %dopar% { (Some code… >>> More
Databases supporting parallel processing across multiple servers

as seen on Server Fault - Search for 'Server Fault'
I need a database engine that can utilize multiple servers for processing a single SQL query in parallel. So far I know that this is possible with the some engines, though none of them are feasible for me either because of pricing or missing features. The engines currently known to me are: MS SQL… >>> More
Multithreading/Parallel Processing in PHP

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a PHP script that will generate a report using PHPExcel from data queried from a MySQL DB. Currently, it is linear in processing in that it gets the data back from MySQL, reads in the Excel template, writes the data to the template, then outputs it. I have optimized the code to the point that… >>> More

Related posts about openmp

Can I implement the readers and writers algorithm in OpenMP by replacing counting semaphores with another feature?

as seen on Programmers - Search for 'Programmers'
After reading about OpenMP and not finding functions to support semaphores, I did an internet search for OpenMP and the readers and writers problem, but found no suitable matches. Is there a general method for replacing counting semaphores in OpenMP with something that it supports? Or is there just… >>> More
Iteration through std containers in openmp

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, people. I try to use openmp for multithreading the loop through std::set. When I write the following code - #pragma omp parallel for for (std::set<A>::const_iterator i = s.begin(); i != s.end(); ++i) { const A a = *i; operate(a); } I get an error -… >>> More
Controlling FPU behavior in an OpenMP program?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a large C++ program that modifies the FPU control word (using _controlfp()). It unmasks some FPU exceptions and installs a SEHTranslator to produce typed C++ exceptions. I am using VC++ 9.0. I would like to use OpenMP (v.2.0) to parallelize some of our computational loops. I've already… >>> More
Segmentation fault on MPI, runs properly on OpenMP

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am trying to run a program on a computer cluster. The structure of the program is the following: PROGRAM something ... CALL subroutine1(...) ... END PROGRAM SUBROUTINE subroutine1(...) ... DO i=1,n CALL subroutine2(...) ENDDO ... END SUBROUTINE SUBROUTINE subroutine2(...) ... CALL subroutine3(… >>> More
Segmentation fault while matrix multiplication using openMp?

as seen on Stack Overflow - Search for 'Stack Overflow'
My matrix multiplication code is int matMul(int ld, double** matrix) { //local variables initialize omp_set_num_threads(nthreads); #pragma omp parallel private(tid,diag,ld) shared(i,j,k,matrix) { /* Obtain and print thread id */ tid = omp_get_thread_num(); for ( k=0; k<ld; k++) … >>> More