The main difference between 32bit and 64bit is not speed but the OUTPUT CAPACITY. For example, if you run a long simulation with a big chip, your result will be chop off at 4GB limit. If you run a P&R tool a big chip, the job will be crash and not finish. 64bit is the solution for big design. applicationkwkam said:I don't agree with that 64bit apps much faster than 32bit apps. Because the 64bit apps mainly benefit on database software but not EDA software. It is more important on floating point performance than 64bit addressing space
Not really, you can speed up a lot with multithreading. For example with Hspice 2CPU can speed up 1.67 times and 6 CPU can speed up 3.0Nobody said:My past experiment result
AMD > Intel >>>> Sun(64bits solaris>=2.7) > Sun(32bits solaris <2.7)
for multi-cpu , it's useless . The load is usually totally un-balance .
It's more suitable for "mutil users" not "mutil thread" .
I recognize that too by running tutorial and compare speed and memory consumption. I haven't tried the big job yet so maybe our conclusion only right with small circuit. Maybe big circuit and more simulstion cycle will favor the later versionNobody said:downgrade speed for new version i found :
hspice 2000.4 > 2002.2
hsim 1.3 > hsim2.0