time of calculation with a bi processor

sam

Hi,

I have a workstation hp xw8200 (xeon 3.2 GHz) with 1GB of ram windows XP Professional SP2 and fluent 6.1

first of all, I do my calculation in serial method the estimated time was 2 month (not possible). When I do the same calculation with parallel method, I have a estimated time to 15 days is better than the serial method but not enough.

But my question is about the processor's use. In serial method they are used at 50%-53% and in parallel method they are only used at 20%-23%. I think I forgot something when I prepare my calculation but I don't know what!! If you have some solutions to grow up the processor's use, I will be very satisfied.

thanks in advance.

sam