topic Re: Using the scalapack and blacs MKL intel libraries without M in Intel® oneAPI Math Kernel Library

Using the scalapack and blacs MKL intel libraries without MPI

Zhanghong_T_ — Sat, 07 Feb 2009 01:15:02 GMT

Dear all,

I would like to use the scalapack and blacs MKL intel libraries without MPI on multi-cores machines, the environment to build the project is:
32 bit Windows XP (or 64 bit) + VS.net2003 (or 2005, 2008) + IVF 11.0 + MKL 10.1

How can I build such a project to make use of all cores? What should I pay attention to for writting code? Could anyone give me such an example of project to show this usage?

Thanks,
Zhanghong Tang

Re: Using the scalapack and blacs MKL intel libraries without M

Gennady_F_Intel — Mon, 09 Feb 2009 07:17:04 GMT

Hi Zhanghong, are you working on SMP or Cluster Systems?
--Gennady

Re: Using the scalapack and blacs MKL intel libraries without M

Zhanghong_T_ — Mon, 09 Feb 2009 09:53:37 GMT

Quoting - Gennady Fedorov (Intel)

Hi Zhanghong, are you working on SMP or Cluster Systems?
--Gennady

Hi Gennady,

Thanks for your kindly reply. Currently working on SMP system (just 4-core intel processor, 64 bit Windows XP). I wish to use all CPUs without installing the MPI, could I link the Intel's libraries to let all CPUs be used?

Thanks,
Zhanghong Tang

Re: Using the scalapack and blacs MKL intel libraries without M

ArturGuzik — Mon, 09 Feb 2009 12:26:46 GMT

Quoting - tangzhanghong98@yahoo.com

Currently working on SMP system (just 4-core intel processor, 64 bit Windows XP).

Hi,

you don't need to do anything, I believe (if I understand your system config correctly). The MKL automatically sets number of threadsOMP_NUM_THREADS to number of cores, and you should observe 100% usage of the cores (if you have enough to work on in your app) From version 10 you have more control over this and additional MKL_NUM_THREADS. Take a look at Chapter 6, Managing performance and Memory in User's Guide.

You can paralize rest of your app using OpenMP.

A.

Edit:

I overlooked the most important part of the message ScaLAPACK. Well, so now I'm not so sure about it. Is it for testing before going to Cluster? I saw your environment posted on IVF forum. You have installed couple of things:-)

Re: Using the scalapack and blacs MKL intel libraries without M

Zhanghong_T_ — Mon, 09 Feb 2009 22:10:20 GMT

Quoting - ArturGuzik

Dear ArturGuzik,

Thank you so much for your kindly suggestion. I will read the document carefully.

Thanks,
Zhanghong Tang