Hello:
Recently I found a strange question about Gromacs-4.6.2 on GPU
workstaion. In my GTX690 machine, when I run md production I found that
the ECC is on. However, in my another GTX590 machine, I found the ECC
was off:
4 GPUs detected:
#0: NVIDIA GeForce GTX 590, compute cap.: 2.0, ECC: no, stat: compatible
#1: NVIDIA GeForce GTX 590, compute cap.: 2.0, ECC: no, stat: compatible
#2: NVIDIA GeForce GTX 590, compute cap.: 2.0, ECC: no, stat: compatible
#3: NVIDIA GeForce GTX 590, compute cap.: 2.0, ECC: no, stat: compatible
moreover, there is only two GTX590 in the machine, I don't know why
Gromacs claimed 4 GPU detected. However, in my another Linux machine
which also have two GTX590, Gromacs-4.6.2 only find 2 GPU, and ECC is
still off.
I am just wondering:
(1) why in GTX690 the ECC can be on while it is off in my GTX590? I
compiled Gromacs with the same options and the same version of intel
compiler
(2) why in machines both of physically installed two GTX590 cards, one
of them was detected with 4 GPU while the other was claimed contains two
GPU?
thank you very much
best
Albert
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