[ADOL-C] increase buffer size for tape files
Pierre Martinon
martinon at cmap.polytechnique.fr
Wed Nov 2 11:56:10 EDT 2011
Hello,
I am currently using Adol-C (with ColPack) and Ipopt to solve optimal
control problems.
It works quite well and is extremely convenient to obtain the first and
second derivatives for the optimization.
However, I noticed a significant drop in performances when working on a
network, due to the access time to the .tap files.
Working on a local partition solves the issue, but I would like to get
rid of .tap files completely if possible.
The tapeless mode seems to require additional modifications of the
source code, which is not really an option in my case.
Therefore I tried to just increase the buffer sizes in usrparams.h, but
the recompilation seems to set them back to their original values.
Am I missing something ?
Sincerely,
Pierre Martinon
--
INRIA and CMAP, Ecole Polytechnique
91128 Palaiseau, France
Web page: http://www.cmap.polytechnique.fr/~martinon
Email: martinon [at] cmap.polytechnique.fr
Phone: +33 169 334 608
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