Skype call

1. resovled the segmetation faults in the p-cblk()
2. the col_grp() function, use the Intel vector instructions
3. use ASM directive to insert the assebly code in the c source code
4. operating 64 bits (Quard word) instead of 32 bits at a time
5. compilation: #gcc -O2 -o testcopy testcopy.c vectorcopy.s
6. loop unrolling, instead of MOV, ADD(4), we do 4 MOV, and ADD(16)
7. gcc could do loop unroolling with certain argument when compile, look up that
8. Tasks
9. - split_col_grp() mainly data copying, try to enhance
10. - try gcc unrolling on jasper, and profile/record the execution time
11. - try vector instructions (ASM directive)
12. - publis a paper by the end of year