Hi Jeremy: Do you have the 32 bit compatibility libraries installed? For the binaries in question, what does ldd /usr/users/gcg/linuxbin/gcgbin/execute/mapplot report? There should be nothing with an "unknown" library entry there. Also, what do file /usr/users/gcg/linuxbin/gcgbin/execute/mapplot and file /usr/users/gcg/linuxbin/gcgbin/oblib/libgenshare.so report? Joe Jeremy Mann wrote: > We recently purchased a new 64bit Opteron cluster. Everything works so far > except GCG. When users try and run GCG they get this error: > > >>>For each GCG function I've tried (eg. mapplot), I get the following >>>error: >>> >>>/usr/users/gcg/linuxbin/gcgbin/execute/mapplot: relocation error: >>>/usr/users/gcg/linuxbin/gcgbin/oblib/libgenshare.so: symbol errno, >>>version >>>GLIBC_2.0 not defined in file libc.so.6 with link time reference > > > The cluster consists of dual Opterons with Suse 9.1 64bit edition. > > Is there a workaround for this or an update for GCG? > > Thanks in advance! > > -- Joseph Landman, Ph.D Founder and CEO Scalable Informatics LLC, email: landman at scalableinformatics.com web : http://www.scalableinformatics.com phone: +1 734 786 8423 fax : +1 734 786 8452 cell : +1 734 612 4615