[petsc-users] AMD interlagos optimization flags

[Anton Popov]

On 3/5/13 9:23 PM, Dharmendar Reddy wrote:
> Hello,
>         Has any one installed petsc on the AMD 6200 series processor 
> systems? I have a small cluster with quad socket AMD 6274 (16Core)  
> processors. Should i use any special optimization flags or let petsc 
> configure script decide ?
>
> I would like have two flavors of the instillation:
>
>  1.  intel 13.2 compilers using intel mpi and intel MKL 11.0
>  2.  intel 13.2 compilers using intel mpi and ACML 5.3 compile with
>     intel. Now ACML has a weird organization of the libraries. It has
>     same names for both the 64bit and 32 bit integer libraries but
>     saved in different folders. Should i link to single thread or
>     multithreaded acml ?
>
Dharmendar,

I use
--COPTFLAGS="-mavx -mfma4 -O3"
--FOPTFLAGS="-mavx -mfma4 -O3"

and single-threaded ACML optimized for fma4 instruction set ( i.e. 
gfortran64_fma4/lib/libacml.a)
Obviously, I use gcc and gfortran. All works fine. No need for Intel on 
this machine. If you think gcc is much slower, just try with optimization.

> 1.
>
>
>
> -- 
> -----------------------------------------------------
> Dharmendar Reddy Palle
> Graduate Student
> Microelectronics Research center,
> University of Texas at Austin,
> 10100 Burnet Road, Bldg. 160
> MER 2.608F, TX 78758-4445
> e-mail: dharmareddy84 at gmail.com <mailto:dharmareddy84 at gmail.com>
> Phone: +1-512-350-9082
> United States of America.
> Homepage: https://webspace.utexas.edu/~dpr342 
> <https://webspace.utexas.edu/%7Edpr342>

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