"Emiliano Barreto_Hernandez" <ebarretoh at="" unal.edu.co=""> writes: > But when I tryed to load de Rmpi library in R, it doesn't work > With this error: > >> library(Rmpi) > Error in dyn.load(x, as.logical(local), as.logical(now)) : > unable to load shared library > '/usr/local/lib64/R/library/Rmpi/libs/Rmpi.so': > /usr/local/lib/liblam.so.0: undefined symbol: openpty > Error in library(Rmpi) : .First.lib failed for 'Rmpi' > Error in dyn.unload(x) : dynamic/shared library > '/usr/local/lib64/R/library/Rmpi/libs/Rmpi.so' was not loaded >> > > May give me some advise Since R package extensions are dynamic libs, perhaps at link-time you are ending up with the wrong liblam? Start R and then: Sys.getenv("LD_LIBRARY_PATH") system("ldd /usr/local/lib64/R/library/Rmpi/libs/Rmpi.so") That should tell you whether you are linking against the mpi libs that you want at run time. + seth