Download the file named ISM_6.2_CDAC_<build_date>.zip . The internal folder structure will contain the licences directory.
Introduction In the world of computational material science and theoretical chemistry, few tools are as revered for specific niche applications as the ISM (Intermolecular Separation Method) software . Developed primarily for analyzing intermolecular interactions, electron densities, and molecular docking simulations, ISM has become a staple in many Indian research laboratories. The version ISM 6.2 represents a significant leap in parallel computing capabilities and user-friendly scripting. ism 6.2 software licences from cdac.zip
Search for "ISM 6.2" under the "Scientific Computing" category. Download the file named ISM_6
Visit the official CDAC software portal (currently https://software.cdac.in or the DST e-governance page). Note: As of 2025, the exact URL may redirect to the National Supercomputing Mission (NSM) portal. and molecular docking simulations
Fill out the Material Transfer Agreement (MTA). This is a digital form where you declare that the software will not be used for commercial purposes.
cd ISM_6.2/licences ./get_hostid # Outputs a 12-character code Email this hostid to licensing@cdac.in . Within 2-3 working days, you’ll receive a license.dat file unique to your machine. If you have already downloaded a random .zip from the internet and are facing errors, here’s how to troubleshoot: Error 1: "License file corrupt or expired" Cause: The license.dat contains a hardcoded expiry date (e.g., EXPIRES=31-DEC-2020 ). Fix: Legitimate solution – request a renewal from CDAC. Illegitimate "solutions" involving system date changes will break other software. Error 2: "Cannot open /usr/local/ism_6.2/licences/license.dat" Cause: The binary is looking for an absolute path. Fix: Create a symbolic link or set the environment variable: