Bowtie2-build "Doing ahead-of-time memory usage test" requires >5 times the amount of memory than is used by the subsequent process.

[wiebepo]

Using a 148GB fasta file as an input, the bowtie2-build -p command performs a memory test of ~3.3 TB; however, the indexing process does not consume more than 1 TB thereafter. It prevents the use of a smaller instance for the same process.
How is the memory magnitude calculated for the memory usage test?
While I understand that in the ahead-of-time memory test can cause the process to fail sooner, can it be overridden?