Honored Contributor
Honored Contributor
can you describe any changes you have made in sopc builder? your d-mip number sounds quite low given you're running at 50mhz. increasing the clock speed will only increase the d-mip result by the multiple of the clock speed increase; to improve performance i'd suggest addessing whatever is wrong before trying to get the last 2-3mhz in f-max out of it.
the d-mips numbers in the nios ii cpu wizard should give a clue as to what is to be expected. is there anything different in your system? is some other master accessing the same memory as your dhrystone app when you run it? have you turned off the hw multiplier? --- Quote End --- Jesse, I just compiled the original "standard" 1s10es example at 80Mhz, no changes other than making the sdram_pll run at 80Mhz and got the following results: Register option selected? NO Microseconds for one run through Dhrystone: 19.0 Dhrystones per Second: 52688.0 VAX MIPS rating = 29.988 I would like to make it run, though, at 100Mhz. It just can't close timing. Any ideas ?
