Pardiso on linux environment

[ahmediiit]

Hello sir,

Presently my system is xeon E5520 2.27 gz and 24 gB RAM---windows 64 bit OS

I am using pardiso solverto solve around 600000 equation.

It is taking 5 minutes for each iteration. which i have to for many times

For my problem i need to stillincreasethe number ofequation.

In our institiute we have very good system with many processors.,

but it is having linux installed in it.

I want to ask whether my present code which is running on windows platform

can be used on linux platform, or i have to change it.

If i need to change what i have to change.

I am new to linux environment

please help

[ArturGuzik]

Hi,

if you use the Intel compiler(s), either C or Fortran, in most cases, you just need to rebuild the application on Linux. Obviously, if you have calls to windows APIs, these must be replaced (some of them can be replaced by calling functions from IPORT library if you used Fortran, so then code is perfectly portable).

In any case you'll need a makefile, which will build and link to MKL library. If you use C/C++, Intel C++ compiler nicely integrates with Eclipse and it provides help on building the executable. If you use Fortran, and programmed with modules, then my advice is to copy the order of compiled files from VS (as on windows the interdependence of module is automatically resolved) while creating you makefile. This will save you a lot of frustration, especially if the code is complex.

If you need more assistance, post a bit more more specific problems/questions here, so somebody can offer better advice.

A.

[ahmediiit]

Hello sir,

I am very much new to linux

I have installed the file l_cprof_p_11.1.069 on ubuntu.

I am not understanding from where to start.

Can you please tell the basic steps from where to start.

My program is purely using fortran77 language

i am able compile my code with following command on the command line on windows 64 bit

ifort /F800000000 model3d.for mkl_solver_lp64.lib mkl_intel_lp64_dll.lib mkl_intel_thread_dll.lib mkl_core_dll.lib -Qopenmp

please help

[ArturGuzik]

Hi,

this should be (relatively) easy. You have F77, so no modules, no anything.

First of all, verify that installation of the compiler is OK.

(1) Open command window, then use command line and command cd (change directory) (or something equivalent) to navigate to location of your source file(s).

(2) type

ifort -c model3d.for

this should only compile the file. If this passes with no errors/warnings, then installation should be fine.

(3) type

ifort model3.for -L -lmkl_solver_lp64 ...... and rest of your libraries.

You can take a look at makefiles in examples directory of MKL.

I have no time today to write more, but should be able to post more details by tomorrow. Try step (1) and (2) anyway, so we know that installation is OK.

A.

[ArturGuzik]

Below is a short example of makefile for you. I updated it to reflect your setting, however, not sure whether it can run (I might to forget about something). Consult Link Advisor if something goes wrong. Save it as text file in the folder where the model3d.for file is. Then navigate (using command line window) to the folder where you saved it. Then type

model3d -f makefile

Once the executable is build, type

./model3d

This will run the code.

----------------------------------------------------------

.SUFFIXES:
.SUFFIXES: .o .f90 .mod

# bind source(s)
SRC = model3d.for

# directories
OUTDIR = release/
INTDIR = release/
MKL_PATH = /opt/intel/Compiler/11.1/064 (replace with the folder of your MKL)

# build
model3d: makefile $(SRC)
ifort -o $@ -ipo -O3 -no-prec-div -xHost -parallel -auto -ccdefault fortran -warn all -module $(INTDIR) $(SRC) -liomp5 -L$(MKL_PATH) -lmkl_lapack -lmkl_core -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_solver_lp64 -static-intel
-------------------------------------------------------------

what about ilp64? You sure you're going to use lp64?

A.

[ahmediiit]

hello sir,

I am getting the following error

bash: ifort: command not found

My os is ubuntu 9

[ArturGuzik]

probably you didn't setup ("source") ifort script for your working shell. The script names are either ifortvars.sh or ifortvars.cs. You can find them in /opt/intel/fc/xxxxx/bin, where xxx is your version number. try to run (source) it and then try again to use command line. The description is in the user's guide.

A.

[Gennady_F_Intel]

more precisely - try to do: source /opt/intel/Compiler/11.1/046/bin/ifortvars.sh intel64

[ahmediiit]

I have done it

source /opt/intel/Compiler/11.1/046/bin/ifortvars.sh ia32

i did not get any error

Still i get the same error

[ArturGuzik]

As Gennady showed, intel64 is what you want. I thought you have x64 architecture, don't you?

You mean, you opened command window, typed

source ..... intel64

command and this setup was OK. then if you try to type command

ifort

you get the error that ifort not found.

Gennady, is the Ubuntu supported now? If I recall correctly some people had issues at the time it was not supported (if it is now), related to bash/dash bizzarre issues. How is it now?

A.

[ahmediiit]

i opened the terminal and typed

source /opt/intel/Compiler/11.1/046/bin/ifortvars.sh ia32

it did not show any error, but still i get the previous error

Presently i am trying to run on ia32 only After it

works i will be going to 64 architecture

[ArturGuzik]

Well. If source didn't make any complains then.....

I understand that if you type

ifort -v

you also get :command not found error.

If this is a case, so definitely something is wrong with your installation. I'm afraid you need to ask somebody at your Department to help you with that (I mean installation).

A.

[Gennady_F_Intel]

Artur, sorry, i missed this question. Yes,

the latest version of MKL supports Ubuntu* 8.10 (IA-32 / Intel 64).

See the Release Notes for MKL 10.2 update 4:

Following is the list of supported operating systems:

..............

Ubuntu* 8.10 (IA-32 / Intel 64)

the same for C/C++ compiler for Linux:

Since verion 11 update2 started to support

Ubuntu* 9.04 now supported

--Gennady