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[Help-gsl] question about calling gsl_multimin_fminimizer while using MP

From: Haiying Pang
Subject: [Help-gsl] question about calling gsl_multimin_fminimizer while using MPI
Date: Fri, 21 Oct 2011 12:06:56 -0500

hi, All,

I am wondering if anyone out there has a clue how to call
gsl_multimin_fminimizer while the function evaluated iteratively has both
parallel and serial part. The problem I have now is that I don't know where
I should call MPI_init(). I know  MPI_init() can only be called once, so it
got be in the function that calls gsl_multimin_fminimizer to avoid multiple
callings, but the parallel starts once MPI_init() is called, which means
there will be multiple processors that run gsl_multimin_fminimizer_iterate,
but I only want parallel to start in the function that
gsl_multimin_fminimizer evaluates, the part with
gsl_multimin_fminimizer_iterate should be serial.

I hope I made you understand my question. Appreciate for any help!

Haiying Pang

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