[FLASH-USERS] problem in initializing more than 2GB pr CPU

[Tomasz Plewa]

Latif -

It may not solve your problem, but you may still want to estimate 
whether you are able to complete your simulation in a sensible time frame.

To put things into perspective, let's assume that you eventually 
produced a 2+ GB per processor code. Let's say, 800 blocks 16^3 zones each.

These days typical execution times for FLASH are slightly less than 1 
16^3 block per processor per second per cycle (double time step). If you 
use all blocks in your model, and assuming perfect scaling, you need 800 
seconds per time step. You can advance your model at a rate of about 100 
cycles per day. A typical 3-D model costs perhaps several 1,000 cycles. 
So in your case this translates into several weeks of uninterrupted 
computing on your whole system per a single model.

Tomek
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