Hi~,
I have a question about ifort option "heap-arrays" in intel 64 mode(64bit).
I compiled a program which requires large computation in IA-32 mode(32bit) without "heap-arrays" option, and the computation time is about 3 seconds.
In intel 64 mode(64bit), I compiled the same program with "heap-arrays" option, but in this case, the computation time is about 100 seconds.
Could any one give me the reason of it and how I could get the same performance of IA-32 mode in intel 64 mode?