Re: [ccp4bb] Refmac executables - win vs linux in RHEL VM

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Subject: Refmac executables - win vs linux in RHEL VM
From: "Bernhard Rupp (Hofkristallrat a {- dot -} D {- dot -} )" hofkristallamt {- at -} GMAIL {- dot -} COM
Date: 2012-04-07

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Subject: Re: Refmac executables - win vs linux in RHEL VM
From: Nat Echols nathaniel {- dot -} echols {- at -} GMAIL {- dot -} COM
Date: 2012-04-07

Subject: Re: Refmac executables - win vs linux in RHEL VM
From: Roger Rowlett rrowlett {- at -} COLGATE {- dot -} EDU
Date: 2012-04-07

I don't know the state of current software, because I haven't tried
recently, but when I set up my student crystallography workstations a
few years back I noticed many packages (e.g. EPMR, Phaser) that had
potentially long run times (where it is really noticeable) would run on
the identical hardware about 2-3 times faster in Linux than in Windows
XP. Memory swapping wasn't the issue. I was astounded there could be
that much overhead in Windows. A Linux VM on a windows machine being
faster than native Win7 is pretty weird, though.

Cheers,

On 4/7/2012 11:42 AM, Bernhard Rupp (Hofkristallrat a.D.) wrote:
> Something the developers might be interested in:
>
> The Refmac_5.6.0117 32-bit windows binaries run native on a win64 3-4x
> slower than
> those from the linux distribution run
> **in a RHEL6.2-64 VMware virtual machine hosted the same windows7/64
> system.....**
> VM/RHEL:
> Refmac_5.6.0117: End of Refmac_5.6.0117
> Times: User: 1015.3s System: 135.0s Elapsed: 19:17
> Win native
> Refmac_5.6.0117: End of Refmac_5.6.0117
> Times: User: 0.0s System: 0.0s Elapsed: 67:49
>
> Most peculiar....although I think but I do not know whether the linux
> binaries are 64 bit
> I don't think that address space is the issue here if they are.
>
> Maybe the paranoia-checkers in windows slow everything down
> although I did not see any resources overwhelmed...
>
> Best regards, BR
> -----------------------------------------------------------------
> Bernhard Rupp
> 001 (925) 209-7429
> +43 (676) 571-0536
> br@ruppweb.org
> hofkristallamt@gmail.com
> http://www.ruppweb.org/
> -----------------------------------------------------------------
> No animals were hurt or killed during the
> production of this email.
> -----------------------------------------------------------------

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Next message:
Subject: Re: Refmac executables - win vs linux in RHEL VM
From: Nat Echols nathaniel {- dot -} echols {- at -} GMAIL {- dot -} COM
Date: 2012-04-07