This option can be found in the Option Screen's Scheduler Section.
Multi-threading: This allows up to 8 reports to be exported simultaneously. Your
system resources will be shared so this will not always mean that reports will take
1/4 the normal time. For example:
You have 4 reports. Each one takes 15 minutes to export.
In single threaded mode, it would take 1 hour to complete the export
In multi-threaded mode, you would expect it to take 15 minutes for all 4.
However, the sharing of your system resources by 4 reports may result in each report
taking longer that 15 minutes and the total time for 4 reports may be more than 15
minutes (but definitely less than 1 hour).
*Tip: Combine Collaboration with multi-threading to further increase your reporting performance. Each collaborator (a SQL-RD installation) will receive 8 threads. For example if you have 3 Collaborators, you have a possible 24 threads. For more, see Collaboration.