Re: [gmx-users] Spec'ing for new machines (again!)

2020-04-21 Thread Alex

Hi Szilárd,

We haven't decided yet on what price point& performance level we would be 
settling on, but this is overall great advice, thanks a lot.

Alex

On 4/21/2020 4:32 PM, Szilárd Páll wrote:

Hi,

Note that the new generation Ryzen2-based CPUs perform even better than
those we benchmarked for that paper. The 3900-series Threarippers are great
for workstations, unless you need the workstation form-factor, you are
better off with servers like the TYAN GA88B8021. If so, i  EPYC 1P is what
you should be looking at, e.g. EPYC 7402P.

GPU-wise, depending on your timeline you can expect NVIDIA to release
something this year, so you may want to time the purchase to either hit the
curren-gen GPUs discounted or go for the next gen.

Cheers,
--
Szilárd


On Sat, Apr 18, 2020 at 7:56 AM Alex  wrote:


  From what I am seeing in this paper, we should just go with something
along the lines of Ryzen 1950x + 4 x 2080 or 2080Ti. There are
indications that Ryzen also rips (pun intended) Xeons in DFT/CC
calculations, so overall this combination sounds quite reasonable for
our purposes. This also outlines a path towards upgrading our existing
nodes.

Thanks Kevin, this is very informative.

Alex

On 4/17/2020 8:52 PM, Kevin Boyd wrote:

Yes, that's it. I think consumer-class Nvidia cards are still the best
value, unless you have other applications that need the benefits of
industrial cards.

Cheers,

Kevin

On Fri, Apr 17, 2020 at 5:58 PM Alex  wrote:


*Message sent from a system outside of UConn.*


Hi Kevin,

Thanks for responding! RAM is mentioned for completeness. This amount is
not for gmx -- we do other, much more RAM-intensive calculations, in
fact 256 gigs is very modest for that. I have no doubt that AMD CPUs
would work with Nvidia GPUs, was mainly wondering if there would be any
additional speed boost if we also used AMD GPUs.

Nope, haven't seen the paper, but quite interested in checking it out.
Is this the latest version?
https://onlinelibrary.wiley.com/doi/abs/10.1002/jcc.26011

Thank you,

Alex

On 4/17/2020 6:29 PM, Kevin Boyd wrote:

Hi,

AMD CPUs work fine with Nvidia GPUs, so feel free to use AMD as a base
regardless of the GPUs you end up choosing. In my experience AMD CPUs

have

had great value.

A ratio of ~4 cores/ GPU shouldn't be a problem. 256 GB of RAM is very

much

overkill, but perhaps you have other uses for the machine that need it.

Have you seen the updated "More bang for your buck" paper that goes

into

optimizing compute nodes?


See



On Fri, Apr 17, 2020 at 4:17 PM FAISAL NABI  wrote:


*Message sent from a system outside of UConn.*


Gromacs is totally compatible with nvidia based gpu. You need to

install

cuda drivers and you can build easily with cmake. For amd gpu you

would

be

needing openCL alongwith the sdk for amd gpu. I would suggest you to

use

nvidia acceleration for better performance.

On Sat, Apr 18, 2020, 4:42 AM Alex  wrote:


Hello all,

Hope you're staying safe & healthy! We are starting to spec new

machines

and our end goal is two machines, each featuring:

1. ~16-18 CPU cores w/hyperthreading

2. Four GPUs

3. ~256 gigs of RAM.

A very approximate allocation of money is ~$15-20K per unit, but we
could of course buy more if each machine turns out to be

significantly

cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are
welcome. We are somewhat open to AMD-based solutions, but wonder what
the situation is with GPU acceleration, as so far we've been entirely
Intel-based. Will it work with NVIDIA cards? Will we have to install

AMD

GPUs? Does current Gromacs perform well on AMD-based rigs?

Thank you!

Alex

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Re: [gmx-users] Spec'ing for new machines (again!)

2020-04-21 Thread Szilárd Páll
Hi,

Note that the new generation Ryzen2-based CPUs perform even better than
those we benchmarked for that paper. The 3900-series Threarippers are great
for workstations, unless you need the workstation form-factor, you are
better off with servers like the TYAN GA88B8021. If so, i  EPYC 1P is what
you should be looking at, e.g. EPYC 7402P.

GPU-wise, depending on your timeline you can expect NVIDIA to release
something this year, so you may want to time the purchase to either hit the
curren-gen GPUs discounted or go for the next gen.

Cheers,
--
Szilárd


On Sat, Apr 18, 2020 at 7:56 AM Alex  wrote:

>  From what I am seeing in this paper, we should just go with something
> along the lines of Ryzen 1950x + 4 x 2080 or 2080Ti. There are
> indications that Ryzen also rips (pun intended) Xeons in DFT/CC
> calculations, so overall this combination sounds quite reasonable for
> our purposes. This also outlines a path towards upgrading our existing
> nodes.
>
> Thanks Kevin, this is very informative.
>
> Alex
>
> On 4/17/2020 8:52 PM, Kevin Boyd wrote:
> > Yes, that's it. I think consumer-class Nvidia cards are still the best
> > value, unless you have other applications that need the benefits of
> > industrial cards.
> >
> > Cheers,
> >
> > Kevin
> >
> > On Fri, Apr 17, 2020 at 5:58 PM Alex  wrote:
> >
> >> *Message sent from a system outside of UConn.*
> >>
> >>
> >> Hi Kevin,
> >>
> >> Thanks for responding! RAM is mentioned for completeness. This amount is
> >> not for gmx -- we do other, much more RAM-intensive calculations, in
> >> fact 256 gigs is very modest for that. I have no doubt that AMD CPUs
> >> would work with Nvidia GPUs, was mainly wondering if there would be any
> >> additional speed boost if we also used AMD GPUs.
> >>
> >> Nope, haven't seen the paper, but quite interested in checking it out.
> >> Is this the latest version?
> >> https://onlinelibrary.wiley.com/doi/abs/10.1002/jcc.26011
> >>
> >> Thank you,
> >>
> >> Alex
> >>
> >> On 4/17/2020 6:29 PM, Kevin Boyd wrote:
> >>> Hi,
> >>>
> >>> AMD CPUs work fine with Nvidia GPUs, so feel free to use AMD as a base
> >>> regardless of the GPUs you end up choosing. In my experience AMD CPUs
> >> have
> >>> had great value.
> >>>
> >>> A ratio of ~4 cores/ GPU shouldn't be a problem. 256 GB of RAM is very
> >> much
> >>> overkill, but perhaps you have other uses for the machine that need it.
> >>>
> >>> Have you seen the updated "More bang for your buck" paper that goes
> into
> >>> optimizing compute nodes?
> >>>
> >>>
> >>> See
> >>>
> >>>
> >>>
> >>> On Fri, Apr 17, 2020 at 4:17 PM FAISAL NABI  wrote:
> >>>
>  *Message sent from a system outside of UConn.*
> 
> 
>  Gromacs is totally compatible with nvidia based gpu. You need to
> install
>  cuda drivers and you can build easily with cmake. For amd gpu you
> would
> >> be
>  needing openCL alongwith the sdk for amd gpu. I would suggest you to
> use
>  nvidia acceleration for better performance.
> 
>  On Sat, Apr 18, 2020, 4:42 AM Alex  wrote:
> 
> > Hello all,
> >
> > Hope you're staying safe & healthy! We are starting to spec new
> >> machines
> > and our end goal is two machines, each featuring:
> >
> > 1. ~16-18 CPU cores w/hyperthreading
> >
> > 2. Four GPUs
> >
> > 3. ~256 gigs of RAM.
> >
> > A very approximate allocation of money is ~$15-20K per unit, but we
> > could of course buy more if each machine turns out to be
> significantly
> > cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are
> > welcome. We are somewhat open to AMD-based solutions, but wonder what
> > the situation is with GPU acceleration, as so far we've been entirely
> > Intel-based. Will it work with NVIDIA cards? Will we have to install
> >> AMD
> > GPUs? Does current Gromacs perform well on AMD-based rigs?
> >
> > Thank you!
> >
> > Alex
> >
> > --
> > Gromacs Users mailing list
> >
> > * Please search the archive at
> > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
> > posting!
> >
> > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
> >
> > * For (un)subscribe requests visit
> > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users
> or
> > send a mail to gmx-users-requ...@gromacs.org.
> >
>  --
>  Gromacs Users mailing list
> 
>  * Please search the archive at
>  http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
>  posting!
> 
>  * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
> 
>  * For (un)subscribe requests visit
>  https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or
>  send a mail to gmx-users-requ...@gromacs.org.
> 
> >> --
> >> Gromacs Users mailing list
> >>
> >> * Please search the archive at
> >> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List 

Re: [gmx-users] Spec'ing for new machines (again!)

2020-04-17 Thread Alex
From what I am seeing in this paper, we should just go with something 
along the lines of Ryzen 1950x + 4 x 2080 or 2080Ti. There are 
indications that Ryzen also rips (pun intended) Xeons in DFT/CC 
calculations, so overall this combination sounds quite reasonable for 
our purposes. This also outlines a path towards upgrading our existing 
nodes.


Thanks Kevin, this is very informative.

Alex

On 4/17/2020 8:52 PM, Kevin Boyd wrote:

Yes, that's it. I think consumer-class Nvidia cards are still the best
value, unless you have other applications that need the benefits of
industrial cards.

Cheers,

Kevin

On Fri, Apr 17, 2020 at 5:58 PM Alex  wrote:


*Message sent from a system outside of UConn.*


Hi Kevin,

Thanks for responding! RAM is mentioned for completeness. This amount is
not for gmx -- we do other, much more RAM-intensive calculations, in
fact 256 gigs is very modest for that. I have no doubt that AMD CPUs
would work with Nvidia GPUs, was mainly wondering if there would be any
additional speed boost if we also used AMD GPUs.

Nope, haven't seen the paper, but quite interested in checking it out.
Is this the latest version?
https://onlinelibrary.wiley.com/doi/abs/10.1002/jcc.26011

Thank you,

Alex

On 4/17/2020 6:29 PM, Kevin Boyd wrote:

Hi,

AMD CPUs work fine with Nvidia GPUs, so feel free to use AMD as a base
regardless of the GPUs you end up choosing. In my experience AMD CPUs

have

had great value.

A ratio of ~4 cores/ GPU shouldn't be a problem. 256 GB of RAM is very

much

overkill, but perhaps you have other uses for the machine that need it.

Have you seen the updated "More bang for your buck" paper that goes into
optimizing compute nodes?


See



On Fri, Apr 17, 2020 at 4:17 PM FAISAL NABI  wrote:


*Message sent from a system outside of UConn.*


Gromacs is totally compatible with nvidia based gpu. You need to install
cuda drivers and you can build easily with cmake. For amd gpu you would

be

needing openCL alongwith the sdk for amd gpu. I would suggest you to use
nvidia acceleration for better performance.

On Sat, Apr 18, 2020, 4:42 AM Alex  wrote:


Hello all,

Hope you're staying safe & healthy! We are starting to spec new

machines

and our end goal is two machines, each featuring:

1. ~16-18 CPU cores w/hyperthreading

2. Four GPUs

3. ~256 gigs of RAM.

A very approximate allocation of money is ~$15-20K per unit, but we
could of course buy more if each machine turns out to be significantly
cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are
welcome. We are somewhat open to AMD-based solutions, but wonder what
the situation is with GPU acceleration, as so far we've been entirely
Intel-based. Will it work with NVIDIA cards? Will we have to install

AMD

GPUs? Does current Gromacs perform well on AMD-based rigs?

Thank you!

Alex

--
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Re: [gmx-users] Spec'ing for new machines (again!)

2020-04-17 Thread Kevin Boyd
Yes, that's it. I think consumer-class Nvidia cards are still the best
value, unless you have other applications that need the benefits of
industrial cards.

Cheers,

Kevin

On Fri, Apr 17, 2020 at 5:58 PM Alex  wrote:

> *Message sent from a system outside of UConn.*
>
>
> Hi Kevin,
>
> Thanks for responding! RAM is mentioned for completeness. This amount is
> not for gmx -- we do other, much more RAM-intensive calculations, in
> fact 256 gigs is very modest for that. I have no doubt that AMD CPUs
> would work with Nvidia GPUs, was mainly wondering if there would be any
> additional speed boost if we also used AMD GPUs.
>
> Nope, haven't seen the paper, but quite interested in checking it out.
> Is this the latest version?
> https://onlinelibrary.wiley.com/doi/abs/10.1002/jcc.26011
>
> Thank you,
>
> Alex
>
> On 4/17/2020 6:29 PM, Kevin Boyd wrote:
> > Hi,
> >
> > AMD CPUs work fine with Nvidia GPUs, so feel free to use AMD as a base
> > regardless of the GPUs you end up choosing. In my experience AMD CPUs
> have
> > had great value.
> >
> > A ratio of ~4 cores/ GPU shouldn't be a problem. 256 GB of RAM is very
> much
> > overkill, but perhaps you have other uses for the machine that need it.
> >
> > Have you seen the updated "More bang for your buck" paper that goes into
> > optimizing compute nodes?
> >
> >
> > See
> >
> >
> >
> > On Fri, Apr 17, 2020 at 4:17 PM FAISAL NABI  wrote:
> >
> >> *Message sent from a system outside of UConn.*
> >>
> >>
> >> Gromacs is totally compatible with nvidia based gpu. You need to install
> >> cuda drivers and you can build easily with cmake. For amd gpu you would
> be
> >> needing openCL alongwith the sdk for amd gpu. I would suggest you to use
> >> nvidia acceleration for better performance.
> >>
> >> On Sat, Apr 18, 2020, 4:42 AM Alex  wrote:
> >>
> >>> Hello all,
> >>>
> >>> Hope you're staying safe & healthy! We are starting to spec new
> machines
> >>> and our end goal is two machines, each featuring:
> >>>
> >>> 1. ~16-18 CPU cores w/hyperthreading
> >>>
> >>> 2. Four GPUs
> >>>
> >>> 3. ~256 gigs of RAM.
> >>>
> >>> A very approximate allocation of money is ~$15-20K per unit, but we
> >>> could of course buy more if each machine turns out to be significantly
> >>> cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are
> >>> welcome. We are somewhat open to AMD-based solutions, but wonder what
> >>> the situation is with GPU acceleration, as so far we've been entirely
> >>> Intel-based. Will it work with NVIDIA cards? Will we have to install
> AMD
> >>> GPUs? Does current Gromacs perform well on AMD-based rigs?
> >>>
> >>> Thank you!
> >>>
> >>> Alex
> >>>
> >>> --
> >>> Gromacs Users mailing list
> >>>
> >>> * Please search the archive at
> >>> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
> >>> posting!
> >>>
> >>> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
> >>>
> >>> * For (un)subscribe requests visit
> >>> https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or
> >>> send a mail to gmx-users-requ...@gromacs.org.
> >>>
> >> --
> >> Gromacs Users mailing list
> >>
> >> * Please search the archive at
> >> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
> >> posting!
> >>
> >> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
> >>
> >> * For (un)subscribe requests visit
> >> https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or
> >> send a mail to gmx-users-requ...@gromacs.org.
> >>
> --
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>
> * Please search the archive at
> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
> posting!
>
> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
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Re: [gmx-users] Spec'ing for new machines (again!)

2020-04-17 Thread Alex

Hi Kevin,

Thanks for responding! RAM is mentioned for completeness. This amount is 
not for gmx -- we do other, much more RAM-intensive calculations, in 
fact 256 gigs is very modest for that. I have no doubt that AMD CPUs 
would work with Nvidia GPUs, was mainly wondering if there would be any 
additional speed boost if we also used AMD GPUs.


Nope, haven't seen the paper, but quite interested in checking it out. 
Is this the latest version? 
https://onlinelibrary.wiley.com/doi/abs/10.1002/jcc.26011


Thank you,

Alex

On 4/17/2020 6:29 PM, Kevin Boyd wrote:

Hi,

AMD CPUs work fine with Nvidia GPUs, so feel free to use AMD as a base
regardless of the GPUs you end up choosing. In my experience AMD CPUs have
had great value.

A ratio of ~4 cores/ GPU shouldn't be a problem. 256 GB of RAM is very much
overkill, but perhaps you have other uses for the machine that need it.

Have you seen the updated "More bang for your buck" paper that goes into
optimizing compute nodes?


See



On Fri, Apr 17, 2020 at 4:17 PM FAISAL NABI  wrote:


*Message sent from a system outside of UConn.*


Gromacs is totally compatible with nvidia based gpu. You need to install
cuda drivers and you can build easily with cmake. For amd gpu you would be
needing openCL alongwith the sdk for amd gpu. I would suggest you to use
nvidia acceleration for better performance.

On Sat, Apr 18, 2020, 4:42 AM Alex  wrote:


Hello all,

Hope you're staying safe & healthy! We are starting to spec new machines
and our end goal is two machines, each featuring:

1. ~16-18 CPU cores w/hyperthreading

2. Four GPUs

3. ~256 gigs of RAM.

A very approximate allocation of money is ~$15-20K per unit, but we
could of course buy more if each machine turns out to be significantly
cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are
welcome. We are somewhat open to AMD-based solutions, but wonder what
the situation is with GPU acceleration, as so far we've been entirely
Intel-based. Will it work with NVIDIA cards? Will we have to install AMD
GPUs? Does current Gromacs perform well on AMD-based rigs?

Thank you!

Alex

--
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* Please search the archive at
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Re: [gmx-users] Spec'ing for new machines (again!)

2020-04-17 Thread Kevin Boyd
Hi,

AMD CPUs work fine with Nvidia GPUs, so feel free to use AMD as a base
regardless of the GPUs you end up choosing. In my experience AMD CPUs have
had great value.

A ratio of ~4 cores/ GPU shouldn't be a problem. 256 GB of RAM is very much
overkill, but perhaps you have other uses for the machine that need it.

Have you seen the updated "More bang for your buck" paper that goes into
optimizing compute nodes?


See



On Fri, Apr 17, 2020 at 4:17 PM FAISAL NABI  wrote:

> *Message sent from a system outside of UConn.*
>
>
> Gromacs is totally compatible with nvidia based gpu. You need to install
> cuda drivers and you can build easily with cmake. For amd gpu you would be
> needing openCL alongwith the sdk for amd gpu. I would suggest you to use
> nvidia acceleration for better performance.
>
> On Sat, Apr 18, 2020, 4:42 AM Alex  wrote:
>
> > Hello all,
> >
> > Hope you're staying safe & healthy! We are starting to spec new machines
> > and our end goal is two machines, each featuring:
> >
> > 1. ~16-18 CPU cores w/hyperthreading
> >
> > 2. Four GPUs
> >
> > 3. ~256 gigs of RAM.
> >
> > A very approximate allocation of money is ~$15-20K per unit, but we
> > could of course buy more if each machine turns out to be significantly
> > cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are
> > welcome. We are somewhat open to AMD-based solutions, but wonder what
> > the situation is with GPU acceleration, as so far we've been entirely
> > Intel-based. Will it work with NVIDIA cards? Will we have to install AMD
> > GPUs? Does current Gromacs perform well on AMD-based rigs?
> >
> > Thank you!
> >
> > Alex
> >
> > --
> > Gromacs Users mailing list
> >
> > * Please search the archive at
> > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
> > posting!
> >
> > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
> >
> > * For (un)subscribe requests visit
> > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or
> > send a mail to gmx-users-requ...@gromacs.org.
> >
> --
> Gromacs Users mailing list
>
> * Please search the archive at
> http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
> posting!
>
> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
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Re: [gmx-users] Spec'ing for new machines (again!)

2020-04-17 Thread FAISAL NABI
Gromacs is totally compatible with nvidia based gpu. You need to install
cuda drivers and you can build easily with cmake. For amd gpu you would be
needing openCL alongwith the sdk for amd gpu. I would suggest you to use
nvidia acceleration for better performance.

On Sat, Apr 18, 2020, 4:42 AM Alex  wrote:

> Hello all,
>
> Hope you're staying safe & healthy! We are starting to spec new machines
> and our end goal is two machines, each featuring:
>
> 1. ~16-18 CPU cores w/hyperthreading
>
> 2. Four GPUs
>
> 3. ~256 gigs of RAM.
>
> A very approximate allocation of money is ~$15-20K per unit, but we
> could of course buy more if each machine turns out to be significantly
> cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are
> welcome. We are somewhat open to AMD-based solutions, but wonder what
> the situation is with GPU acceleration, as so far we've been entirely
> Intel-based. Will it work with NVIDIA cards? Will we have to install AMD
> GPUs? Does current Gromacs perform well on AMD-based rigs?
>
> Thank you!
>
> Alex
>
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[gmx-users] Spec'ing for new machines (again!)

2020-04-17 Thread Alex

Hello all,

Hope you're staying safe & healthy! We are starting to spec new machines 
and our end goal is two machines, each featuring:


1. ~16-18 CPU cores w/hyperthreading

2. Four GPUs

3. ~256 gigs of RAM.

A very approximate allocation of money is ~$15-20K per unit, but we 
could of course buy more if each machine turns out to be significantly 
cheaper. All suggestions for CPUs and GPUs (esp. from Szilard) are 
welcome. We are somewhat open to AMD-based solutions, but wonder what 
the situation is with GPU acceleration, as so far we've been entirely 
Intel-based. Will it work with NVIDIA cards? Will we have to install AMD 
GPUs? Does current Gromacs perform well on AMD-based rigs?


Thank you!

Alex

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