Error mesg in SPECFEM_GLOBAL

SPECFEM
1

Hi there,

I installed the SPECFEM_GLOBAL package according to the manual, and tried a quick example in /global_small. It runs successfully if I use 6 processors (in Par_file, NCHUNKS=6, NPROC_XI=1, NPROC_ETA=1). But it fails if I use 24 processors (in Par_file, NCHUNKS=6, NPROC_XI=2, NPROC_ETA=2). The error mesg is below, if you may give some suggestions, that would be greatly appreciated. Thanks.

[c25g02:20124:0:20124] Caught signal 11 (Segmentation fault: address not mapped to object at address 0x7ffddf41fb08)
…
==== backtrace ====
0 /lib64/libucs.so.0(+0x17970) [0x7f7f5c411970]
1 /lib64/libucs.so.0(+0x17b22) [0x7f7f5c411b22]
2 /home//tools/specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D() [0x4ff47a]
3 /home///specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D
() [0x60614e]
4 /home///specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D
() [0x603324]
5 /home///specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D
() [0x4b0673]
6 /home///specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D
() [0x4a4250]
7 /home///specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D
() [0x45c5fd]
8 /home///specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D
() [0x40d3e2]
9 /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f7f7353e555]
10 /home//*/specfem3d_globe/EXAMPLES/global_small/bin/xmeshfem3D
() [0x40d2e9]

Primary job terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.

mpirun noticed that process rank 11 with PID 0 on node c25g02 exited on signal 11 (Segmentation fault).

2

Dear Jiaming,

                 Are you running this example on your personal computer or a cluster? Unless you have a computer with enough amount of cores in the processor, you will not be able to run this example with 24 processors. Also, you must be sure we have the necessary amount of memory to run it.

Best wishes,

Carlos