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Date: Sun, 12 Jan 2014 05:16:45 -0800
From: Jeremi Gosney <>
Subject: Re: CUDA multi-device support

On 1/12/2014 1:25 AM, Muhammad Junaid Muzammil wrote:
> Currently we have set MAX_GPU limit as 8 in both openCL and CUDA
> variants. What was the reason behind it? Currently, both AMD crossfire
> and NVIDIA SLI supports a maximum of 4 GPU devices.

This is not very sound logic, as one does not use Crossfire nor SLI for
GPGPU. In fact, this technology usually must be disabled for compute
work. fglrx supports a maximum of 8 devices, and afaik nvidia supports
16 devices, if not more. So 16 would likely be a more sane value.

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