Average many runs of each (e.g., 8 runs w/ VNs = 4, 8 runs w/ VNs = 5) and see if there is a statistically significant difference or not. Since the difference in runtime is pretty small, this could be due only to difference in RANDOM_SEED.
That said, I don't actually know how Ruby might react to having 'extra' VNs.
Regards,
Dan
On Fri, Apr 2, 2010 at 4:52 PM, Ikhwan Lee <ikhwan@xxxxxxxxxxxxxxx> wrote:
The MOESI_SMP_directory protocol needs 4 virtual networks; however, it
should also run fine with 5 virtual networks since the 5th virtual
network will never be used by the protocol. The question is, when I
compare the results of two simulations (one with 4 and one with 5
virtual networks), I get something like below.
153c153
< NUMBER_OF_VIRTUAL_NETWORKS: 4
---
< NUMBER_OF_VIRTUAL_NETWORKS: 5
1457c1458
< Ruby_current_time: 25741756
---
> Ruby_current_time: 27894100
1459c1460
< Ruby_cycles: 25741755
---
> Ruby_cycles: 27894099
1461,1468c1462,1469
< mbytes_resident: 480.223
< mbytes_total: 508.523
< resident_ratio: 0.944347
<
< Total_misses: 2736589
< total_misses: 2736589 [ 221437 184551 181803 181854 165005 165866
172800 177348 162455 164810 168559 167311 146275 158797 158483 159235
]
< user_misses: 199059 [ 6640 12908 16388 12543 9998 14914 11967 11834
17170 11744 11685 12695 13389 11501 12351 11332 ]
< supervisor_misses: 2537530 [ 214797 171643 165415 169311 155007
150952 160833 165514 145285 153066 156874 154616 132886 147296 146132
147903 ]
---
> mbytes_resident: 177.781
> mbytes_total: 498.574
> resident_ratio: 0.356579
>
> Total_misses: 2976004
> total_misses: 2976004 [ 231381 201401 206063 197190 177795 182883 187239 196167 175355 180539 183532 179732 157077 173355 171734 174561 ]
> user_misses: 200169 [ 12482 12593 12510 11561 13957 9487 11581 12406 17732 13232 11811 11721 12437 12137 12108 12414 ]
> supervisor_misses: 2775835 [ 218899 188808 193553 185629 163838 173396 175658 183761 157623 167307 171721 168011 144640 161218 159626 162147 ]
--- omitted the rest
The differences are not too big, but still quite strange since I
expected them to be exactly the same. Any idea on what is happening?
I'm using Garnet fixed pipeline network.
Thanks,
Ikhwan
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