Improving performance
To improve bulk costing performance, you (or your administrator) can experiment with different values for "bulkload.concurrent.loader.count=1" in the following properties file:
<apriori_install> ext\analysis-purchasing-module\plugin.properties
This controls the number of concurrent bulk load threads that aPriori will support. The value is limited by the number of CPUs (or CPU cores) that your computer has. If you specify more threads than CPUs, then the extra threads will simply wait for the other processes to complete, before running, and you won't see any additional performance benefit. Each thread by default will consume an additional 2 GB of memory, so carefully balance any performance gains against the load on your system.