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[Help-glpk] Re: parallelism and glpk

From: Jose Monreal
Subject: [Help-glpk] Re: parallelism and glpk
Date: Mon, 9 Feb 2009 17:42:24 -0300
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> It is difficult to say what precisely happens. Could you provide more
> details? In particular, could you determine in which glpk routine the
> error occurs? Please note that glpk is not re-entrant and has no
> synchronization features, so glpk routines must not be called from
> parallel tasks within the same address space.

Sometimes it hungs at SIMPLEX, but I guess because the data given to it its 
not the correct, somehow glpk is writing on the address space of the DSM 
I know that glpk is not re-entrant. What I do is each node solve a different 
transportation problem, each computer runs its own glpk problem, the data is 
divided in parallel, but glpk is runned sequentaly.

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