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From: Chai Chong Chul <ccchai@romance.kaist.ac.kr>
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Subject: CCL:summary for Optimal Spec for Molecular Modelling 
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From Tom.Huff@owens-corning.com Mon Apr  1 22:08:31 1996
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From: "Tom.Huff" <Tom.Huff@owens-corning.com>
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Subject: SGI Machines
To: ccchai@romance.kaist.ac.kr
Status: RO

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     We are in the process of obtaining some new workstations at Owens 
     Corning and we are going with the configuration recommended by your 
     SGI representative, that is Mips 10k chips, Solid IMPACT Graphics, 128 
     MB RAM and 4GB Hard Disk.
     
     The R4400 chips are older and slower than the R10000 chips.  The 
     standard Spec Integer and Floating Point benchmark tests have just 
     changed so there is not a one to one comparison between the R4400 and 
     R10000 chips.  However, based upon my reading about the Spec 
     benchmarks, I expect that the first R10000 chips will be 2 to 3 times 
     faster than the fastest R4400 chips available.  I have heard from SGI 
     that they have seen speed ups in that range for some computational 
     chemistry programs that they have run in their testing.  The speed 
     increase depends upon the specific type of modeling work that you are 
     doing.
     
     We use Cerius 2 from MSI and are concerned about immediate 
     compatibility.  I have not yet been able to get a firm response from 
     MSI with regard to compatibility with the IRIX 6.2 operating system 
     which will be on the R10000 chips.  I know compatibility testing has 
     been performed.  It is SGI's intent to have binary compatibility 
     between IRIX 6.1 (current operating system) and IRIX 6.2 for all major 
     programs.  Since computational chemistry is a major market for SGI, I 
     am sure they are doing the best they can to insure compatibility.  The 
     worst situation would be to wait for the next release of Cerius 2 
     which MSI has assured us will definitely be compatible with IRIX 6.2
     
     I hope this helps.
     
     
     Tom Huff
     tom.huff@owens-corning.com

From ross@cgl.ucsf.EDU Mon Apr  1 02:39:48 1996
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Date: Sun, 31 Mar 1996 09:41:09 -0800 (PST)
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To: ccchai@romance.kaist.ac.kr
Subject: Re:  CCL:[Q] Optimal Spec for Molecular Modelling.
Status: RO

	 And they suggested new model with Mips R10k chips, Solid IMPACT
	 GraphicsCards, 128M RAM, and  4G Hard DISK. 

unless you are using high-end graphics, the
solid impact may be overkill - I would ask
the providers of your graphics programs. E.g.
if most of what you look at is wire frame
models of molecules, fast texture mapping
(the solid impact feature) is wasted.

	 But, because we have extra money , We are considering to buy 
	 another machine, which is Mips R4400 chips, Solid IMPACT GRAPHICS 
	 Cards, 128M RAM, and 4G Hard DISK.

If you expect to do much scientific calculation
(as opposed to mainly graphics), the R4400 is
a waste compared to r10000. 

An r8000 is 1/2 the speed of a C90 processor for 
molecular mechanics, I expect an r4400/250MHz
would be about 1/2 the speed of the r8000, and
the r10000 might be as much as twice the r8000.
See the benchmarks on http://www.amber.ucsf.edu/amber/

Bill Ross





>>> That's All... 
  Have you any other Information ? 
  Good Luck!!!


-- 
____________________________________________________________________________
 ___  ___
 | |  // A I S T   Chong Chul Chai(e-mail:ccchai@muse.kaist.ac.kr)
 | |-//  1 9 9 5   Department of Chemistry and Center for Molecular Science.
 | |-\\            Korea Adv. Inst. of Sci. & Tech., Tel: 042-869-2853.
 | |  \\           373-1, Kusungdong, Yusungku, Taejon, 305-701 Korea.
 ---  ---          alcohol in ara,csqueen,kids bbs
                   http://muse.kaist.ac.kr/~ccchai
============================================================================


From jkl@ccl.net  Tue Apr  2 10:20:19 1996
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To: chemistry@www.ccl.net
Subject: ChemPhysLet ToC via e-mail FREE
Cc: jkl@ccl.net



Dear members of the CCL-list,

Elsevier Science is pleased to announce a free e-mail alerting service 
for Chemical Physics Letters (CPLETT). If you would like to receive advance
notice of the contents of CPLETT please follow the instructions below.

If you have any colleagues who you think may wish to receive this 
information, please feel free to send this e-mail message on to them.

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The Netherlands  


From owner-chemistry@ccl.net  Tue Apr  2 18:20:26 1996
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Date: Tue, 2 Apr 96 17:56:22 -0500
From: polowin@hyper.hyper.com (Joel Polowin)
Message-Id: <9604022256.AA20656@hyper.hyper.com>
To: chemistry@ccl.net, <crawford.ra@pg.com>
Subject: Re:  CCL:Calcium Basis Sets


Hi, Ray.
 
>      Recently, I began some structural calculations on calcium complexes.  
> So far, I have only found 3 RHF basis sets which allow me to have Ca as an 
> atom -- PM3 (parameterized by Spartan), STO-3G, and 3-21G(*).  The 
> calculations which I am doing require a bit more precision than these basis 
> sets allow, but I cannot find any other basis sets which are parameterized 
> for Calcium.  If anyone can help, it will be greatly appreciated.

HyperChem includes Ca parameters for ZINDO/1.  Release 4.5, with _ab
initio_ calculations, has Ca parameters in basis sets STO-2G and -2G*
through STO-6G and -6G*; the references for these basis sets are Hehre,
Stewart and Pople, _J. Chem. Phys._ *51*, 2657 (1969); Collins, Schleyer,
Binkley, and Pople, _J. Chem. Phys._ *64*, 5142 (1976); and Stewart,
_J. Chem. Phys._ *52*, 431 (1970).

Joel
 
------------
Joel Polowin, Ph.D.   Manager, Scientific Support
Email to: polowin@hyper.com 

Hypercube Inc, 419 Phillip St, Waterloo, Ont, Canada N2L 3X2 (519)725-4040
Info requests to: info@hyper.com    Support questions to: support@hyper.com
Email group: Send "subscribe hyperchem" to hyperchem-request@hyper.com
WWW: http://www.hyper.com/



From owner-chemistry@ccl.net  Tue Apr  2 22:20:25 1996
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From: Ramon Garduno <ramon@ce.ifisicam.unam.mx>
Subject: SGI: THANK YOU ALL!
To: chemistry@ccl.net (POST MSG's)
Date: Tue, 2 Apr 96 20:25:55 CST
Mailer: Elm [revision: 70.85]


Dear CCLers,

   I am very grateful to those who answered to my question regarding 
   the installation of software different to that of sgi updates. Special
   thanks to Omar G. Stradella from sgi.com who provided the key for this
   to work.  I hope that enclosing the main answer will help others who 
   have a cdrom unit in one sgi machine and want to install third party
   software in another sgi machine that does not have a cdrom unit.

   1) Delete line containing "/CDROM" in both /etc/xtab and /etc/fstab in host
      with cdrom unit.
   2) Delete line containing "/CDROM/" in /etc/exports in host with cdrom unit.
   3) Insert cdrom with software in host with cdrom unit.
   4) Make sure that the CDROM is installed with "df; ls /CDROM". These 
      instructions will let you know if the cdrom unit is recognized.
   5) Now, that the CDROM is recognized, add a line with "/CDROM" in
      /etc/exports
   6) Execute "exportfs -a" in host with cdrom unit.
      DO NOT TRY TO INSTALL THE DCROM WITH MOUNT, this will screw up the
      procedure!!!
   7) In sgi machine without cdrom unit, mount hots:/CDROM into /CDROM via
      NFS mount manager.
   8) Umount /CDROM, and mount /CDROM as root in sgi machine without cdrom.
   9) Now "ls /CDROM", and you will be able to see the archives in the cdrom
      with software.
  10) Follow instructions to install software.

  Cheers,

P.S. For those concerned, I have no quarrel with BIOSYM/MSI or SGI Inc., my
question was simply technical.
    
--

____________________________________________________________________________
		  	 Dr. Ramon Garduno-Juarez
                     Research Professor in Biophysics
INSTITUTO DE FISICA                  |  EMAIL:  ramon@ce.ifisicam.unam.mx
UNIVERSIDAD NAL. AUTONOMA DE MEXICO  |          rgard@redvax1.dgsca.unam.mx
Laboratorio de Cuernavaca            |  VOICE:	(73)175388
Apdo. Postal 48-3                    |          (73)111611
62251 Cuernavaca, Morelos            |  FAX:	(73)111603
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