Hi,

please use g_wham 4.5.2 or later. We largely updated g_wham recently. If you get a flat PMF, check the warnings that g_wham gives you and --very important-- look at the histograms. That usually gives you a clue where the histograms to not overlap.

In case you find a bug, please let me know. Otherwise, I have computed hundreds of PMFs with g_wham and it always worked fine.

Cheers,

Jochen

On 3/9/11 Mar 9,11:08 PM, [email protected] wrote:
g_wham is not the only version of wham. Try using alan grossfield's version. Too often, I am afraid, gromacs accessory programs get broken in an update (not sure what the general solution is here beyond renewed calls for a proper test suite. Perhaps having 20+ programs is not ideal for a single software suite where the real focus is only on mdrun and grompp?)

Chris.

-- original message --

Hi,

I ran  g_wham 4.5.2 and did get a non-zero PMF curve.
I assume that there is something going on with g_wham on version 4.5.1.

Thank you for your help.

Susana

On Wed, Mar 9, 2011 at 3:00 PM, Mark Abraham <Mark.Abraham at anu.edu.au>wrote:




--
---------------------------------------------------
Dr. Jochen Hub
Computational and Systems Biology
Dept. of Cell&  Molecular Biology
Uppsala University. Box 596, 75124 Uppsala, Sweden.
Phone: +46-18-4715056 Fax: +46-18-511755
http://xray.bmc.uu.se/~jochen/index.html
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