[petsc-users] Installation without BLAS/LAPACK

[Ali Berk Kahraman]

Exactly the words I wanted to hear. Thank you very much.


On 20-02-2018 19:46, Smith, Barry F. wrote:
>
>> On Feb 20, 2018, at 10:41 AM, Ali Berk Kahraman <aliberkkahraman at yahoo.com> wrote:
>>
>> When I call --download-blaslapack, what does it do exactly? Where does it install the library? Does it touch anything anything else (such as updating versions of mpicc) ? My concern is that if I call download-blaslapack I will "change" some stuff in the /usr/bin directory that might disable some other program, package installed on the computer.
>    It puts everything in your PETSC_DIR and does not, nor could not change anything in /usr
>
>     Barry
>
>>
>> On 20-02-2018 19:34, Satish Balay wrote:
>>> On Tue, 20 Feb 2018, Ali Berk Kahraman wrote:
>>>
>>>> Hello All,
>>>>
>>>> I have access to a common computer in my school, and I want to use petsc on
>>>> it. The problem is that I do not have root access, and neither do I want it.
>>>> The machine has OpenMPI installed in it, but no BLAS. Can I configure petsc
>>>> somehow without having any BLAS commands? If not, can I install BLAS somehow
>>>> only on my own folder (/home/myfolder) without touching anything inside /usr/
>>>> folder?
>>> You don't need root access to install/use PETSc.
>>>
>>> And you can ask petsc configure to install any required or missing packages.
>>>
>>> ./configure CC=gcc FC=gfortran CXX=g++ --download-blaslapack --download-mpich
>>> make
>>>
>>> If you wish to install PETSc with a preinstalled mpi - you can do:
>>>
>>> ./configure CC=mpicc FC=mpif90 CXX=mpicxx --download-blaslapack
>>> make
>>>
>>> Satish