[gmx-users] info about gpus

[Moir, Michael (MMoir)]

Stefano,
I'm investigating that myself.  If your motherboard splits the bandwidth between your PCI-E slots then there is no advantage to having 2 GPUs for a GPU like the 1080.  I have just upgraded to a better motherboard that does not split the  bandwidth but I am not finished my testing.  Going to the 2080 offers a 40% increase in speed over the 1080 in terms of raw computing power but it is unclear that it is worth the extra $.
Mike

-----Original Message-----
From: gromacs.org_gmx-users-bounces at maillist.sys.kth.se <gromacs.org_gmx-users-bounces at maillist.sys.kth.se> On Behalf Of Stefano Guglielmo
Sent: Thursday, January 31, 2019 9:14 AM
To: gromacs.org_gmx-users at maillist.sys.kth.se
Subject: [**EXTERNAL**] [gmx-users] info about gpus

 Dear all,
I am tryin to set a new workstation and I would like to know if there is a
significant improvement in performance with two gpus (gtx 1080 ti or rtx
2080) rather than just one, and eventually with which cpu/ram requisite.

Thanks in advance for any advice and suggestions
Stefano

-- 
Stefano GUGLIELMO PhD
Assistant Professor of Medicinal Chemistry
Department of Drug Science and Technology
Via P. Giuria 9
10125 Turin, ITALY
ph. +39 (0)11 6707178


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