Same here. Win-7 64 bit, and Vista 64-bit. 9600 GT and Quadro 380. Both reverted back to CPU. Cuda test passes. Same situation. Ideas or solutions? === Since the last build Zephyr has passed more year - when to wait the new version, with OpenMM 3.1.1 or newest? Can you make 64-bit windows Zephyr? M...

You CAN run simulation on GPU in Windows Vista 64-bit WITHOUT "Reverting to Reference Platform"?

<t>Success!<br/> The HelloArgon on WinXP-32bit and Win7-64bit generate following list (on the long-scrolled screen)<br/> MODEL 252<br/> ATOM 1 AR AR 1 0.201 0.000 0.000 1.00 0.00<br/> ATOM 2 AR AR 1 5.000 0.000 0.000 1.00 0.00<br/> ATOM 3 AR AR 1 9.799 0.000 0.000 1.00 0.00<br/> ENDMDL<br/> <br/> Wh...

acceleration with OpenCL and normal MD (using CPU) works fine.

What you mean?
I've run TestReferenceHarmonicBondForce program from precompiled package - success with message: "Running test - PASS". Where is HelloArgon program?

This problem present in my system too!
(Win7-64 CoreDuo T6600 + Nvidia GT320M)
I think Win 64 cause is it. Dear developers! Can you solve this problem with Zephyr? Admin mode and XP simulation cannot help.