From chemistry-request %-% at %-% ccl.net Sun Nov 23 14:28:19 2003 Received: from copland.udel.edu (copland.udel.edu [128.175.13.92]) by server.ccl.net (8.12.8/8.12.8) with ESMTP id hANJRmNL027466 for ; Sun, 23 Nov 2003 14:27:48 -0500 Received: from [128.175.138.90] ([128.175.138.90]) by copland.udel.edu (8.12.10/8.12.10) with ESMTP id hANJRleJ014248 for ; Sun, 23 Nov 2003 14:27:47 -0500 (EST) Message-Id: <200311231927.hANJRleJ014248=at=copland.udel.edu> X-Mailer: Microsoft Outlook Express Macintosh Edition - 4.5 (0410) Date: Sun, 23 Nov 2003 14:20:15 -0500 Subject: Re:G98 QCISD/MP4 calculations From: "Olga Dmitrenko" To: chemistry=at=ccl.net Mime-version: 1.0 X-Priority: 3 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit X-Spam-Score: 0.9 DEAR_SOMEBODY,SPAM_PHRASE_00_01 X-Scanned-By: MIMEDefang 2.37 X-Spam-Status: No, hits=0.0 required=7.0 tests=none version=2.55 X-Spam-Checker-Version: SpamAssassin 2.55 (1.174.2.19-2003-05-19-exp) Dear Jim, We've had similar problems before with G2 calculations, in particular with QCISD and MP2/6-311+G(3df,2p) steps. Sometimes I had to do stepwise calculations and using G2 formulas from the original papers to calculate G2 energies and enthalpies. What was helpful, we used maxdisk=1250 000 000 and large memory (%mem=1000MB - you have it). With best regards, Olga * Dr. Olga Dmitrenko * Department of Chemistry and Biochemistry * University of Delaware, Newark * Delaware 19716, USA *Tel: (302) 831-0887 * Email: odmitr=at=udel.edu