[petsc-users] BLAS library for PETSc

[Jed Brown]

The reference BLAS is "bad", but unless you are doing dense linear algebra
or using a third party solver that uses BLAS level 3 internally (MUMPS), a
tuned implementation will make little difference because relatively little
time will be spent in BLAS, and those operations are memory bound (and can
only be improved a modest amount by trickery).

On Feb 6, 2011 9:11 AM, "Gaurish Telang" <gaurish108 at gmail.com> wrote:

How good is the BLAS library that PETSc downloads with the option
"--download-f-blas-lapack=1
" during the installation step ?

Is it recommended to use this BLAS library with PETSc or libraries such as
ATLAS or GOTO?
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