SLI Motherboards

[lambchops511]

What's the latest scoop w. SLI motherboards? Do they need to be "SLI" certified? or will any do?

I am using CUDA compute and I want to use two GPUs where I will be programming them and sharing memory between them, do I still need a SLI motherboard for that or any motherboard w. 2 PCIE x16 sockets will do?

 

[Jaydip]

U can do away with any MB in that case.U can use one as primary rendering unit and the other as a debugging unit.

 

[lambchops511]

@Jaydip,

No. I want to use them both as compute units at the same time. For example, sharing memory between them using

cudaError_t cudaMemcpyPeer (...)

 

[Jaydip]

They u need a sli mb for sure.

 

[lambchops511]

They u need a sli mb for sure.

Can anyone else confirm this? Because I am using the Linux CUDA drivers not the Windows GeForce drivers...

 

[ViRGE]

Any motherboard with 2 PCIe x16 sockets will do. But you will need a monitor attached to each card to make it active. Without SLI there's no way to have a slave card stay active.

 

[lambchops511]

Any motherboard with 2 PCIe x16 sockets will do. But you will need a monitor attached to each card to make it active. Without SLI there's no way to have a slave card stay active.

:O . This is true for linux too?

 

[ViRGE]

:O . This is true for linux too?

I'm not a significant Linux user, but AFAIK yes. It's an NVIDIA driver limitation to keep people from filling up systems with GeForces for compute workloads.