CPU load drops very low


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Thanks for your reply. I am trying now to run NWChem on an Apple cluster. After a day or so of running
the job aborts with the following message:

[xgrid-node05:95464] *** Process received signal ***
[xgrid-node05:95464] Signal: Segmentation fault (11)
[xgrid-node05:95464] Signal code: Address not mapped (1)
[xgrid-node05:95464] Failing at address: 0x17cd0a000
[xgrid-node05:95464] [ 0] 2 libSystem.B.dylib 0x00007fff8274f66a _sigtramp + 26
[xgrid-node05:95464] [ 1] 3  ??? 0x000000010de39d90 0x0 + 4527988112
[xgrid-node05:95464] [ 2] 4 nwchem 0x00000001025d4406 ga_dadd_ + 14
[xgrid-node05:95464] [ 3] 5 nwchem 0x00000001001a4959 diis_hamwgt_ + 345
[xgrid-node05:95464] [ 4] 6 nwchem 0x00000001001a3c99 diis_driver_ + 585
[xgrid-node05:95464] [ 5] 7 nwchem 0x000000010018a810 dft_scf_ + 16128
[xgrid-node05:95464] [ 6] 8 nwchem 0x0000000100186021 dft_main0d_ + 7728
[xgrid-node05:95464] [ 7] 9 nwchem 0x00000001002e7ad7 nwdft_ + 2936
[xgrid-node05:95464] [ 8] 10 nwchem 0x00000001002e7f81 dft_energy_ + 68
[xgrid-node05:95464] [ 9] 11 nwchem 0x0000000100008e92 task_energy_doit_ + 840
[xgrid-node05:95464] [10] 12 nwchem 0x000000010000a7d8 task_energy_ + 610
[xgrid-node05:95464] [11] 13 nwchem 0x0000000100014082 task_ + 3660
[xgrid-node05:95464] [12] 14 nwchem 0x000000010000312b MAIN__ + 1404
[xgrid-node05:95464] [13] 15 nwchem 0x000000010262586e main + 14
[xgrid-node05:95464] [14] 16 nwchem 0x0000000100001804 start + 52

Is this a memory problem? Should I recompile with export LARGE_FILES=TRUE ?
George