From: Namo Namo on
I am trying to see if 64-bit Matlab is faster than 32-bit. Tried 2009b on the same Core 2 Quad machine, with 64-bit matlab on 64-bit Win 7 and 32-bit matlab on 32-bit Win 7.

32-bit
0.0540 0.1255 0.0954 0.2246 0.3518 0.2156
64-bit
0.0455 0.0849 0.1651 0.2089 0.3534 0.2159

For LU and FFT, 64-bit is faster. For ODE, 64-bit is much slower. For sparse, 2D, and 3D, the results are comparable.

I looked at the sample benchmark results from both versions and I see the same pattern of ODE being slower under 64-bit. I looked into the bench.m code and it is doing the same thing under 64 or 32-bit.

Anyone has a clue?