Hi

What I was looking for was how to minimize swap file usage, how much memory would prevent this slow swapping. I notice quite a bit of harddrive blinking. I have 500megs installed, would more then 500megs be utilized or ignored to solve a problem.

Rick,




Will the reduction in working set size to 25Mb adversely impact the folding time? I just wonder if this is something which ought to be configurable so that if you have a lot of RAM you can get the result quicker.

Paul

No, it will have no impact on the folding time. We're just optimizing it. Rosetta does a lot of things and we only use a piece of it, so cutting out those unused pieces is where we're getting the gain from. It's a delicate job though.

You clearly don't understand how modern operating systems and virtual memory work.

The only way you are going to enforce this is to set your paging file size to 0. I don't recommend it though as your system will likely become very sluggish if you use it even moderately. Enabling paging, most of the time, actually improves performance of your machine.

With paging enabled, no program, with very few exceptions, can guarantee it won't get swapped out to disk. It's possible to do, but typically the only software that always remains in physical memory are some parts of the OS and some device driver code. Anything else is fair game to swap out.

Believe it or not, Windows will ALWAYS swap information out to your hard drive regardless of how much memory you have. It does this for performance and other reasons. Running a higher load will cause this swapping to occur more frequently.

As has been mentioned many times already before, it allocates 300MB of RAM initially (soon to be down to 200MB). This MAY cause your system to page a bit depending on your RAM and system load. Soon, Windows figures out Rosetta has touched the 230MB and permanently swaps it out. Once it permanently swaps it out, it won't ever be paged back in. Done. You hard drive writes it out once and is done with it.