On Mon, Nov 01, 2010 at 03:52:59PM -0400, Michael Spiegel wrote: > Hi, > > I'm trying to run the HotSpot Java VM on an SGI UV 1000 with 4096 > cores. When I enable the NUMA-aware garbage collection algorithm, I > get a segmentation fault as the virtual machine is initializing. The > sigsegv is occurring at one of the memcpy's in numa_node_to_cpus_v1, > although I'm afraid I can't determine whether libnuma is being called > correctly or incorrectly. I am testing on a system that has numactl > 2.0.5. > > Thanks, > --Michael Hi Michael, I see that Scott Lundal gave you a possible fix. There were some important corrections added to the latest version, so if you could try building numactl/libnuma from numactl-2.0.6-rc3.tar.gz that would be an interesting test. (ftp://oss.sgi.com/www/projects/libnuma/download/) > > #6 <signal handler called> > #7 0x00007f4066fb9ad0 in memcpy () from /lib64/libc.so.6 > #8 0x00007f40658d4c6a in numa_node_to_cpus_v1 (node=132, buffer=0x40112d40, > bufferlen=<value optimized out>) at libnuma.c:1203 > #9 0x00007f4066a85255 in os::Linux::rebuild_cpu_to_node_map() () > from /usr/ue/0/mspiegel/jdk1.6.0_22/jre/lib/amd64/server/libjvm.so > #10 0x00007f4066a8502f in os::Linux::libnuma_init() () > from /usr/ue/0/mspiegel/jdk1.6.0_22/jre/lib/amd64/server/libjvm.so > #11 0x00007f4066a86c38 in os::init_2() () > from /usr/ue/0/mspiegel/jdk1.6.0_22/jre/lib/amd64/server/libjvm.so > #12 0x00007f4066b81c4d in Threads::create_vm(JavaVMInitArgs*, bool*) () > from /usr/ue/0/mspiegel/jdk1.6.0_22/jre/lib/amd64/server/libjvm.so > -- > To unsubscribe from this list: send the line "unsubscribe linux-numa" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Cliff Wickman SGI cpw@xxxxxxx (651) 683-3824 -- To unsubscribe from this list: send the line "unsubscribe linux-numa" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
