Thank you all. I know better now. 
CHARMM 30b1 driven by
1/ Xeon (32 bits)
2/ Redhat 7.3 (32 bits) with a Quadrics-modified 2.4-18-5 kernel
3/ Chuan, with 95% of the mentorship coming from great scientists frequenting this forum.
4/ Gracious support from the forum.
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