Quick question

[Cjwinnit]

What is an AMBER work unit?

http://vspx27.stanford.edu/psummary.html

[nikhsub1]

I believe it is the double precision gromacs units that utilize SSE2.

[darkknight187]

the credit is pretty low, so just out of curiousity about how fast is it going to take to finish?

[ChasR]

Vijay Pande wrote:AMBER uses double precision only. AMBER does not currently have SSE2 specific assembly code and so it will likely run closer to Tinker than Gromacs in general performance. We are planning on adding SSE2 support in future revs, but to keep the core as stable as possible in the initial rollout, we've left it out. Keep in mind that since AMBER uses double precision, SSE2 won't help *that* much.

This is almost double speak since sse@ actually would speed up double precision calculations. What it means is AMBER is a lot slower than double Gromacs

[Cjwinnit]

Cool. I'm gonna fold on this rig (AMD XP 2500+) on dialup so just wondering


-forcesse -advmethods still work?

[nikhsub1]

Cool. I'm gonna fold on this rig (AMD XP 2500+) on dialup so just wondering


-forcesse -advmethods still work?
NO, -forcesse is a dead flag and the new client actually wont run with that flag, use the old -forceasm flag, advmethods also use.

[Cjwinnit]

NO, -forcesse is a dead flag and the new client actually wont run with that flag, use the old -forceasm flag, advmethods also use.

Cool, thanks.

I just got a 600-pointer :D