The DGomacs (double Gromacs) disappeared from my machines late last week. I'm just wondering if it's just me or if nobody has them any more. Strange project, if it only lasted a little over a week. Maybe they are waiting for the (rumored) new DGromacs core before releasing any more?

David

The last one passed through here a couple of days ago and that's it.

M

I've got two on a couple of my machines... but everything else is Gromacs.

never even got 1.... not on any of the 5 machines i have checked!

I think they were pretty much restricted to Intel boxes, in my experience.

M

Since Athlon XP's do not have the SSE2 (double-precision floating point) instructions, it would make sense to assign these only to Intel cpu's, but I am not sure this was the case. All of my Intel machines are running WinXP, all my Athlon machines are running Linux, so I don't know if these WU's have been assigned only to Intel cpu's, or NOT assigned to Linux machines.

David

Hello David:



Athlon 64's have SSE2!

I'm not sure that SSE2 *is* double-precision? I thought that it was just an "extension" of SSE i.e. more instructions? And I thought that I had read that the x87 (floating point) processor was *higher* precision than SSE/SSE2 -- and we all know that Athlon's kick the P4's but in x87 calcs!

David,

After I implemented your DGROMACS optimization on a couple machines before I left town, I still had about 6 of them. I came back today to find that those were the last 6 I've had -- no new ones since Friday (I've since stopped the extra services I installed).

Dave

That's why I said "Athlon XP's", but thanks for the clarification.


I'm out of my depth here, but the DGromacs do use the SSE2 instructions, so they must be related. Are Athlon XP's getting any DGromacs? If so, how are they handling them?

David