> I have a server with two AMD Opteron 848 processors, running Redhat 2.4.21. > We run SAS extensively on it. When I boot the kernel that accesses just one > of the CPUs, SAS runs just fine. But when I boot the kernel which addresses > both CPUs, all SAS applications error out with a segmentation violation. > Does someone have an idea what may be the cause of this?
Two possiblities I can think of:
* SAS has a race condition that does not happen frequently unless two CPUs are used at the same time
* RedHat is using some experimental libc that has a thread safety bug
To find out for sure, as Justin suggested, use gdb to see where it crashes.
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