Rick Bilonick schrieb: > I am trying to install the R package "Rmpi" which needs libmpi. I've > installed openmpi and lam in Centos 5.2: > > [root at rab45-1 /]# rpm -qv openmpi > openmpi-1.2.5-5.el5 > openmpi-1.2.5-5.el5 > [root at rab45-1 /]# rpm -qv lam > lam-7.1.2-14.el5 > lam-7.1.2-14.el5 > > But I get the following error message when trying to install Rmpi: > > /usr/bin/ld: skipping incompatible /usr/lib/lam/lib/libmpi.so when > searching for -lmpi > > I'm not sure what else to install/uninstall to fix this. > > Rick B. Your problem might be confusion about 32 versus 64 bit packages. Let me guess - you're running a 64bit CentOS (this would explain why the packages are listed twice)? To find out about 32/64bit packages it helps to have the following line in file /etc/rpm/macros: %_query_all_fmt %%{name}-%%{version}-%%{release}.%%{arch} Make sure to install the correct version (32 or 64bit) of Rmpi, and to tell Rmpi correctly where it should look for the mpi library. HTH, Kay