[Boost-users] boost::thread or openMP for low-latency multi-threading

Subject: [Boost-users] boost::thread or openMP for low-latency multi-threading
From: Jack Bryan (dtustudy68_at_[hidden])
Date: 2011-08-19 16:25:08

Hi, 

I am trying to do parallelization for a computing intensive problem. 

I am working on a Linux cluster where each node is a multicore processor. 
e.g. 2 or 4 quad-core processor per node. 

I want to reduce latency and improve performance as much as possible. 

I plan to use multiprocessing and multithreading at the same.

Each process run on a distinct node and each process spawn many threads
on each node. This is a 2 level parallelism. 

For multiprocessing, I would like to choose MPI. 

For multithreading, I have two choices: openMP or boost::thread (pthread). 

Which one has lower latency and higher performance ? 

It seems that openMP coding is easier (without touching low level thread managing manually).

But, it seems that openMP has higher overhead than boost::thread (pthread). 

Any help is really appreciated.

thanks