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[Help-gsl] Question about GSL performance under OpenMP

From: Pedro Gardete
Subject: [Help-gsl] Question about GSL performance under OpenMP
Date: Wed, 5 Oct 2011 18:20:38 -0700


I need to go through many systems of equations, which I'm using
the gsl_multiroot_fsolver_hybrid method to solve for. The systems solve
fine, but when I put them inside an OpenMP loop (each thread solves one
system at a time and stores the result) the performance invariably comes
down for each thread as I add more. Should this be expected given that the
threads are independent (ie, don't wait for each other)?


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