[strakey]

Hi All - I have been trying to get scotch-6.0.0 (from ThirdParty-2.3.0) to work with OpenFOAM-2.1.1 due to dgraphFoldComm errors with scotch-5.1.11. I am using a custom solver that incorporates dynamic load balancing with ptscotch. I copied the scotch-6.0.0 folder into the ThirdParty-2.1.1 folder, changed the scotch.sh file to point to the new scotch folder and recompiled. Everything seems to compile OK, but when I run my solver I get a warning about "undefined symbol: SCOTCHorderSaveTree" which prevents my load balancing library from loading.

Has anybody seen this warning/error before or figured out a work around for the dgraphFoldComm errors?

Thanks
Pete

[dlahaye]

you probably need to extend the definition of the environment variable LD_LIBRARY_PATH to include the path to where Scotch stores its library files.

To see the current definition of LD_LIBRARY_PATH, do

echo $LD_LIBRARY_PATH

To extend its definition, do

export LD_LIBRARY = $LD_LIBRARY_PATH:<PATH_TO_SCOTCH_LIBRARY_PATH>

[strakey]

Thanks dlahaye. I finally figured it out today. I had to compile my mesh balancing library with -lscotchDecomp as well as -lptscotchDecomp in the LIB_LIBS=... Apparently my library needed both of these with scotch 6 whereas it only needed the ptscotch library with scotch 5.
Pete