How to Change the Tempfolder Location of Blast2GO

Blast2GO can handle big data-sets, but it needs plenty of free disk space in the systems temporary files folder. If you run into troubles with shortage of disk space, follow this guide to manually change the location of the folder for Blast2GO temporary files to e.g. another partition. The preferences dialog shown on the right allows you to change the temporary folder location, please make sure to restart Blast2GO after changing this setting in order to make it effective.

How to Set Maximum Memory for Blast2GO

Blast2GO automatically reserves up to 50% of the available system memory (i.e. RAM), which is fine in most cases. However, sometimes and especially on Linux, this can lead to excessive disk swapping and will slow down Blast2GO. Follow this guide to manually change the maximum amount of memory Blast2GO will be allowed to use. The preferences dialog shown on the right allows you to change the temporary folder location, please make sure to restart Blast2GO after changing this setting in order to make it effective.

On Linux distributions like Ubuntu it is recommendable to change the vm.swappiness parameter from 60 to 1.

https://help.ubuntu.com/community/SwapFaq#What_is_swappiness_and_how_do_I_change_it.3F