Re: Linear speedup of NONMEM on quad-core CPUs?

That's really not my question. My question was about speedup of multiple NONMEM runs, not one NONMEM run. Let me rephrase the question. Let's say I have eight NONMEM jobs to run each week. Each NONMEM job takes eight hours to run. I go to a computer and start one NONMEM job, and when it is finished, I start another, and so on. After eight hours, all eight NONMEM jobs are run. The next week, I get a great idea. Instead of using one computer, I can use eight computers. I start all eight NONMEM jobs at the same time, and after only one hour they are all done. I have achieved eightfold (linear) speedup in running eight jobs by using eight computers. The next week, I make a further realization. The computers I was running the NONMEM jobs are dual-core, so I need to use only four computers. I start two NONMEM jobs on each of the four computers, and after one hour all the jobs are done. The benefit is that this week I needed only four computers to be available. It might occur to me that all I really need is one computer with two quad-core processors. I could start all eight NONMEM jobs simultaneously on just one computer. The question is, has anyone actually tried this? Does it run all eight NONMEM jobs in the same time it would take to run one NONMEM jobs? In other words, has going from one core to eight cores enabled an eightfold (linear) speedup in running eight NONMEM jobs? If not, how much speedup might I expect from an eight-core computer? -- Steve Brian M. Sadler wrote: > Steve, > > I have just set up NONMEM 6 on a 4GB Core(2) Quad system running XP64. I > don't yet have benchmarks, but I have noted activity on all four CPU using > the "/Qparallel" option with the Intel Fortran Compiler. I look forward to > hearing of others' experiences. > > Cheers... Brian >