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SLI Motherboards

lambchops511

Senior member
Apr 12, 2005
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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

Diamond Member
Mar 29, 2010
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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.
 
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lambchops511

Senior member
Apr 12, 2005
659
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@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 (...)
 

ViRGE

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
165
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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

Senior member
Apr 12, 2005
659
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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

Elite Member, Moderator Emeritus
Oct 9, 1999
31,516
165
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: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.
 

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