Not yet anyway...

It has been discussed and, I do believe, accepted by the WCG techs that, at some point in the future, there'll be an option to decide on which type of FAAH WU the user wishes to crunch (SN2S is purely VINA - so no choice there).

Thing is, there will be times, as stated by the FAAH project scientists, when they'll only be producing either VINA or Autodock (or possibly, both) based WU's for certain experiments - thus, at times like these, it's Hobson's (i.e., no) choice...

FYI, it's also been stated that a new project is 'on the way', and it WON'T be a VINA based project. As to when that'll be coming, hopefully soon - although as there's been no Beta testing done, don't be holding your breath.

You can use an app_config.xml file to define how many tasks can run...

There are loads of examples available and details of locations etc, here is an example:

<app_config>
<app>
<name>faah</name>
<max_concurrent>6</max_concurrent>
<cpu_versions>
<cpu_usage>1</cpu_usage>
</cpu_versions>
</app>
<app>
<name>fahv</name>
<max_concurrent>2</max_concurrent>
<cpu_versions>
<cpu_usage>1</cpu_usage>
</cpu_versions>
</app>
<app>
<name>sn2s</name>
<max_concurrent>1</max_concurrent>
<cpu_versions>
<cpu_usage>1</cpu_usage>
</cpu_versions>
</app>
</app_config>

The default location is - C:\ProgramData\BOINC\projects\www.worldcommunitygrid.org

The <max_concurrent>... line is not required if you change the <cpu_usage>1</cpu_usage> line to the required number of cores/threads/wu's to run for each project

Just for reference

faah = Fight Aids@Home
FAHV = FightAids@homeVina
SN2S = Say No to Schistosoma

Hope this helps...